@@frankbuss Whoops just checked the source, turns out I paid 1.30 from arrow.com. I bought em a while back so my memory was a bit off. I think I was recalling seeing all the ebay ads
@@NeverTalkToCops1 well I bought some ETH about 18 months ago, but I missed my chance to sell them I guess cause I still have them! Think of how many voltage regulators one ETH would have gotten me last January!
Ed19601 Grandpa, we found these HUGE antique voltage regulators in your closet! Tell us about the olden days when components cost a penny and were visible to the naked eye...
@26:36 - Oh, no! It's no longer in the original sealed packaging. That instantly dropped its collectables value by 99.9%. Had it been kept unopened, in 20-30 years, those babies might have been worth 15 cents each!
Dave, these videos are super helpful. When I'm designing a ton of stuff all of the time I generally get stuck or hooked on specific products just because they are easy to use/know they work. I'm definitely not always getting the best bang for the buck. Keep these cheap parts videos coming. I want to make something with them.
@@RobertEly87 Absolutely. Its one thing to find the cheap parts with nearly useless datasheets, another to find a more popular part with an excellent data sheet as well as 3rd party information.
@@Okabim In that case, lower our ambitions to $5. And, as a special option to help some inexperienced Wun Hung Lo designers, exclude shipping costs; Use JLCPCB prototype with a quantity of 5, under 10x10cm (Unit price per PCB $0.40)
Google translate does a terrible job with PDFs. It strips out all of the images and makes a mess of the tables. I have had much better luck with onlinedoctranslator.com It's still not perfect, but most datasheets come out usable.
@@rocketman221projects Yeah, GTranslate occasionally (often) messes up the formatting. There's also a size limit, something like 5000 characters I think. I've used what you linked and can highly recommend it but due note however that it still uses GTranslate for the actual translation. It also allows you to bypass the GTranslate size limit as it translates the document in smaller chunks.
TDL should always exceed output load but in a good case for any active device, Dissipated Power should be much less than actual power output. So no, Dave Jones didn’t have much reason to break out the pyrometer.
1.3 watts is how much power the load was sinking. The regulator was dissipating 0.3 watts which is still a lot for a part that size but not mind-bending.
Shenzen is the manufacturer(?). no need to decap them. they are so cheap (quantity of 20 for $0.48) that it does not make sense to question the quality unless you are making 10,000 units of something and using one of these in it.
Agree. Electronupdate is the man for decaping and analysis. He does _excellent_ decaping work. Can you send a couple to Electronupdate Dave? ua-cam.com/channels/qp2_p4YjtaTKiHuNZv0mAQ.html
@@johnconrad5487 and "Dallas" is the manufacturer of Texas Instrument components? as emphasized Shenzhen is a Chinese city, though a behemoth for CN tech..
@@snarkylive hmmmm! Those regulator ics are yummy!!! Tastes like epoxy and metal alloy mmmmm yummy. But anyway how are you enjoying those regulator ics for breakfast I bet you put them in your cereal
In my old power supply designing and testing days, one thing I learned is to always doubt your equipment, particularly when loaded with active devices such as this. You really should connect a scope probe to Vin to ensure that your fancy power supply isn't oscillating rather than to blame the IC. I've seen very expensive Keithley supplies barf under certain load conditions. Lead inductance between the power supply and the Vin leads of your DUT will definitely affect things. It was a given that you ALWAYS wanted to put a big honkin' capacitor on Vin to negate the effects of this inductance!
I use voltage regulators for 12v on/off inputs to a 3.3v microprocessor. Instead of resistor dividers or optocouplers, they are simple one-part solution, which like said, it reduces 'part count and bom inventory'. So one for 2 cents is not expensive compared to other options.
Because if you need to reduce costs you should *always start with the power supply!* That's why I never pay more than 2 cents for the 100uF Lelon electrolytic caps in the PS! Paying more is just throwing money out the window!
Spontaneously? That might be hard but over time with varying loads including inductive loads is where I would expect to see problems that might cause fires. Now if the PS is poorly assembled also all bets are off and it does happen.
I know you are joking when you say to save money on capacitors. For people who are new to electronics, faulty electrolytic capacitors cause most electronic and computer malfunctions. Tantalum caps often fail too. Lelon electros might be fine for audio and hi-fi. But they wouldn't be first choice for Switch Mode Power Supplies, computer equipment, TV's and communications gear. Also they mightn't be used for hot, vibration or electrically noisy environments.
This kind of chips have a good overvolt/overheat system denominated: MagicSmoke™ which it's cool because warns you if you're damaging the chip with a visual and smell warning, even if you exceeded it too much, it can shine bright!
There are only 4 possible modes, depending on whether or not the input is current- limited. 1) The output shorts to Vcc, 2)Vcc shorts to ground, or 3)Vcc goes open, and 4) output pulls to ground during physical destruction. Determining whether Vcc was shorted to output through a commonalized-ground would require microscopic forensics.
1.3 billion people in China using electronics every day, so cents matter for sure. :-) About 80% of the components I used in the past few years only cost several US cents, and I've got quite a few cheap but working options. Btw, I can help translate those datasheets, in case you need. And thanks for the videos. :-)
Dave, please don't break LCSC :P All these videos about them, I'm going to start having difficulty finding stock on parts. I've used LCSC for almost a year now - GREAT company and friendly staff. I'm really happy for them, they are growing quickly. Some back story, I don't believe they are a new company. Before LCSC.com, they were SZLCSC.COM which is the Chinese Mouser for China. They just decided to start offering some of their catalog internationally, and it seems to be catching on. Again, I wish them well. Sadly, as the secret gets out, I hope my prices don't start creeping up. LCSC - Love Components Save Cost! as they were originally branded. Actually, LCSC is for the Chinese name of the company Lichuang (LC). Not sure what the SC stands for, I think it was also a Chinese name. But it could also be LiChuang Shenzhen, China or Corp. I don't recall, the SZLCSC site isn't working at the moment (maybe they moved everything to LCSC.com). If anyone is able to find the original Chinese words that LCSC is named for let me know. Also, check out their sister companies. EasyEDA (which is how I first found out about them) and JLCPCB. If you order PCBs from JLCPCB and order your parts from LCSC, they will ship the components with your PCBs for free (under 1kg). EasyEDA is also relatively new. I came across them one day while looking for a browser based schematic editor. The company owner reached out to me to ask how I liked the site and I provided him some feedback. He actually responded and was very receptive. Strange Parts did a factory tour of LCSC. The lady who escorted him through the factory is quite a hard worker - early on, she was the primary point of contact for the companies - JLCPCB and LCSC. Very pleasant and helpful. I can't say enough good things about these companies and their employees. If you have feedback for them, they will listen. The feature which allows sorting parts by in-stock qty was a feature request I had made. As these are mostly parts that we in the West don't normally deal with, it's difficult to know which parts are reputable and which might be difficult to work with. I found that parts which were highly stocked usually are widely used. At times I would be browsing the site and watching Quantities of parts suddenly go down by 300k at one time. So, they move a lot of parts. For all my serious designs, I source parts from LCSC and make my designs around these parts. I order my PCBs from JLCPCB, then put in my order for components to ship with my JLCPCB order. "Winner winner chicken dinner!"
@@EEVblog Noooo, It looked super interesting and the the guys in the forum made it much easier. Its not about the effort, its about the learning experience, and reverse engineering techniques in general ! hope you reconsider that !! :( .
@@ibrahimabukharmeh489 If you want that experience, the PICkit programmer and protocol is well documented and you can build your own with no restrictions. Google it.
lcsc actively monitors search request for parts, i once looked at a lm675 power opamp which they didnt even had listed, 2 days later i looked again and they were on "available for order" ..which they still are
I worked for Lucent when they had a TAD division (telephone answering device) . I was an app's e engineer. We might win or lose a sale, based on if the BOM varies by a penny for the entire device built with our chipset, which was only a fraction of the overall cost.
I see no harm using them. Is you need 10k of them, then even spending few hours to test it good, would still be a cost saving. The performance without any output capacitance is quite impressive too. And these are pin compatible with gazillion other fixed regulators, so you are not locked anyhow during design or later. I am sure these are very popular in China and you can probably have a lot of them in various products around, and you do not even know. I wouldn't be surprised if they produce a billion of these regulators per year, with almost no faults.
@@PlasmaHH if you are in China, that is probably a lot of engineering hours. And very likely you are familiar with these chips already anyway. Few hours of quick checks with any chip would be usually enough.
The thing you have to think about is that these obscure Chinesium semiconductor suppliers seem to have some level of dated wafer fab capabilities. There seems to be a plethora of small wafer facilities across the country.
Lived in Shenzhen and know about this manufacturer. Fuman, Fine Mad, Fine Made and Superchip (hilariously) are all valid names... Fuman is in Mandarine. Fine Mad is direct translation from Cantonese pronunciation, and some HK dealer definitely thought it was such a crazy translation and altered it to Fine Made. After the IPO this company finally adopted Superchip as official English name. It is a quite qualified manufacturer featuring many power ICs. Their TC4056 (equivalent of TP4056 made by another Chinese plant in Nanjing) is 20% of the market in low power Li-ion batt charger. Super cheap and good quality.
Hi Dave, you could do a serie of qualifying a chip like this from start to finish. This would like you said take weeks, but it will teach young engineers the amount of work you have to put in making a reliable product.
Skyworks Solutions is common in RF type components, they acquired Advanced Analogic Technologies so they now produce regulators and other power components too.
He called the bag that the reel came in a “hermetically sealed” thing to keep moisture out, but it sure looked more like an anti-static bag to me. And maybe really necessary because if the reason you gave in your comment.
I live in Thailand and use LCSC when I need a part quickly. Good service and quality and they stock some of the oddball MoSFETS found in computers. Recommend
It delivers one watt, but dissipates internally much less than that or else it would overheat and fry itself quickly (unless a heat sink is somehow attached to the chip).
I wonder what the performance, reliability and endurance is like compared to similar part from a known manufacturer, like ST or Texas Instruments etc etc.
Antoine Roquentin potential failure modes might prompt isolation if the connected devices are meaningful but choosing to produce discrete VRs when there are designs specifically made of multiple cheaper parts specifically to get around a need for one, means the need for having a VR in the first place is partly because of space considerations- and no space always means having hot neighbors nearby. I’m sure you can connect the dots from here.
I giggled a bit in the banner of LCSC they are touting "many manufacturers such as AUTHORIZED brands of Changjiang Electronics Tech (CJ), Shenzhen Funan Elec..." but they are eating our lunch anyway. Good stuff and like to see interesting components from diverse suppliers.
You are doing a great job to introduce Chinese parts to the west (south in your case) . The markup of the supply chain is just crazy and the mainstream manufacturers like TI, MCHP etc supports that by setting price to allow that . This kills many viable products just because it is to expensive to buy at retail and reselling to retail. In China this is not the case and part of why the electronics industry is taking over the world even with crappy products.
Hey Dave curious if you had any input on the voting machines overheating issue I don't know if that is something that you have the ability to comment on but it seems like an interesting technology problem that is relevant to current affairs over here in the US of a
Most Chinese products work great when they're new, but how long will they last? Remember the cheap Chinese electrolytics? I think the real question isn't "How much can I save by using these," but rather "How much could I lose if they fail prematurely."
Today the useful life of a device is not only limited by the durability of the components, but also by things like "how long is the service it uses being offered", "how long is the software supported with security updates" and "how fast is the technology developing" (rendering the device obsolete because newer more efficient solutions are developed). 25 years ago a TV was essentially a static device that you could repair when it is broken and then continue to enjoy the same entertainment it offered before. Today, a TV is a computer terminal that includes today's receiving and demodulation tech, todays internet connectivity and apps, and todays display technology and efficency. 5 years later it essentially is obsolete because transmitters have moved on to new more efficient technology, the software in it is insecure and no longer supported, the apps no longer work with todays services, newer sets have better picture quality at lower energy consumption, etc. By the time it breaks, it had passed its end of useful life anyway. This makes long enduring parts less of an issue. More focus should be on recycling the materials used so a new device can be manufactured from it. Of course all of it comes at the cost of the jobs of the TV Repair men.
Great video. The only issue with buying from China is the return shipping if it comes up. It's super cheap to have stuff sent from China, but sending back to China is much more expensive, to the point where you'd actually lose money by sending an item back. Be sure to check the return policy, and if it's not good, make sure you're willing to take the risk.
The regulator use, and see everywhere is the ubiquitous AMS1117-3.3 ... and they cost very little as well. No way their dropout is 18mV though. Sadly, I have several other kinds of LDO regulators, and never measured a dropout even approaching the datasheet claims. Got to try out some of these SC662Ks!
Dave could you please post the recorded programming waveform for the 3 cent micro. Someone (js) on the forum has already reverse engineered the file formats and such. If we have the waveform the community can reverse engineer it for you
I just bought 7c ones, I feel like I've been robbed..
I bought 5 ATTINY45 for $10, about to get the rope. I'm going bankrupt.
@@rockyrivermushrooms529 Where did you buy it? Even at Digikey it costs just a dollar.
@@frankbuss Whoops just checked the source, turns out I paid 1.30 from arrow.com. I bought em a while back so my memory was a bit off. I think I was recalling seeing all the ebay ads
+Brian You probably missed out on Bitcoin, no? This pattern of losing will continue in your life if you don't change.
@@NeverTalkToCops1 well I bought some ETH about 18 months ago, but I missed my chance to sell them I guess cause I still have them! Think of how many voltage regulators one ETH would have gotten me last January!
Do I need them?
No.
Let's buy 3k of them!
Lol story of my life.
3000+1 so we don’t have to break the hermetic seal for the test-sample.
Wants to leave them to his kids a d grandkids :-)
Ed19601 Grandpa, we found these HUGE antique voltage regulators in your closet! Tell us about the olden days when components cost a penny and were visible to the naked eye...
Dave is the one person on youtube i can watch talking about a regulator for 30minutes
Lol, so true. :D
@26:36 - Oh, no! It's no longer in the original sealed packaging. That instantly dropped its collectables value by 99.9%. Had it been kept unopened, in 20-30 years, those babies might have been worth 15 cents each!
whooaa, your LDO is now costing you half the price of your MCU, what a rip-off !
Dave, these videos are super helpful. When I'm designing a ton of stuff all of the time I generally get stuck or hooked on specific products just because they are easy to use/know they work. I'm definitely not always getting the best bang for the buck. Keep these cheap parts videos coming. I want to make something with them.
We need a "Cheap sheet cheat" of all this cheap components. The most common used ones.
Honestly as a beginner it's nice to have a cheap and "popular " list as well. Easier to find help/resources when something is well known
I think that’s a really good idea, would be really cheap to just buy a bunch of cheap random parts and test each set.
@@RobertEly87 Absolutely. Its one thing to find the cheap parts with nearly useless datasheets, another to find a more popular part with an excellent data sheet as well as 3rd party information.
Also you can learn little about Chinese, this will help you dig out a new world with various cheap components everywhere
I've semi started with this, I'm planning on posting it to the /r/alitronics subreddit
we should start a 1$ electronics project challenge :).
that’s a really cool idea
The biggest issue is probably PCBs
i wouldve used the shitty resin bonded paper perfboards
@@Okabim In that case, lower our ambitions to $5. And, as a special option to help some inexperienced Wun Hung Lo designers, exclude shipping costs; Use JLCPCB prototype with a quantity of 5, under 10x10cm (Unit price per PCB $0.40)
@@wesleymays1931 Acceptable, just gotta get people on board
662k is a well known LDO, it's everywhere!!! I use on my projects! Almost all Arduino modules uses this
Hi @EEVBlog, Google translate can translate full pdf:s! Just upload the pdf, tried with your regulator, and worked perfectly.
Awesome
Google translate does a terrible job with PDFs. It strips out all of the images and makes a mess of the tables.
I have had much better luck with onlinedoctranslator.com It's still not perfect, but most datasheets come out usable.
@@rocketman221projects Yeah, GTranslate occasionally (often) messes up the formatting. There's also a size limit, something like 5000 characters I think. I've used what you linked and can highly recommend it but due note however that it still uses GTranslate for the actual translation. It also allows you to bypass the GTranslate size limit as it translates the document in smaller chunks.
The coolest part of google translate to me is that it can translate on realtime video - Chinese fades out, replaced by English.
I wonder how many people who watched this were waiting for the magic smoke to escape around the time Dave had it up to 1.3 watts.
That's crazy for such a tiny package. It should have broken.
TDL should always exceed output load but in a good case for any active device, Dissipated Power should be much less than actual power output. So no, Dave Jones didn’t have much reason to break out the pyrometer.
1.3 watts is how much power the load was sinking. The regulator was dissipating 0.3 watts which is still a lot for a part that size but not mind-bending.
It would be interesting to see the IC decapped and compared to one by a known manufacturer.
Shenzen is the manufacturer(?). no need to decap them. they are so cheap (quantity of 20 for $0.48) that it does not make sense to question the quality unless you are making 10,000 units of something and using one of these in it.
@@johnconrad5487 Shenzhen is the city the company comes from, they've just put that as part of their company name.
Agree. Electronupdate is the man for decaping and analysis. He does _excellent_ decaping work. Can you send a couple to Electronupdate Dave? ua-cam.com/channels/qp2_p4YjtaTKiHuNZv0mAQ.html
There is a trained flea in it performing all the tasks
@@johnconrad5487 and "Dallas" is the manufacturer of Texas Instrument components?
as emphasized Shenzhen is a Chinese city, though a behemoth for CN tech..
They're cheaper than jelly beans that's crazy
You sir, are getting robbed for your delicious vice. Jelly beans cost less than this per individual unit when purchased in bulk.
I X Moylan but jellybeans are not a jellybean part: there are too many varieties.
Regulator ic or jelly beans?
@@snarkylive hmmmm! Those regulator ics are yummy!!! Tastes like epoxy and metal alloy mmmmm yummy. But anyway how are you enjoying those regulator ics for breakfast I bet you put them in your cereal
Shortly after Dave released the video, that LDO went Out-of-Stock. Someone here needs a lot of 3.3V LDOs ^^
In my old power supply designing and testing days, one thing I learned is to always doubt your equipment, particularly when loaded with active devices such as this. You really should connect a scope probe to Vin to ensure that your fancy power supply isn't oscillating rather than to blame the IC. I've seen very expensive Keithley supplies barf under certain load conditions. Lead inductance between the power supply and the Vin leads of your DUT will definitely affect things. It was a given that you ALWAYS wanted to put a big honkin' capacitor on Vin to negate the effects of this inductance!
I use voltage regulators for 12v on/off inputs to a 3.3v microprocessor. Instead of resistor dividers or optocouplers, they are simple one-part solution,
which like said, it reduces 'part count and bom inventory'. So one for 2 cents is not expensive compared to other options.
I love these new series, 3cent uC, 1cent LDO, keep them coming Dave!
I'm completely mesmerized by these components.
Because if you need to reduce costs you should *always start with the power supply!* That's why I never pay more than 2 cents for the 100uF Lelon electrolytic caps in the PS! Paying more is just throwing money out the window!
Spontaneously? That might be hard but over time with varying loads including inductive loads is where I would expect to see problems that might cause fires.
Now if the PS is poorly assembled also all bets are off and it does happen.
+Elmer Do you not know how to use the Paduak chip to implement your caps in software? Hee Hee.
I know you are joking when you say to save money on capacitors. For people who are new to electronics, faulty electrolytic capacitors cause most electronic and computer malfunctions. Tantalum caps often fail too.
Lelon electros might be fine for audio and hi-fi. But they wouldn't be first choice for Switch Mode Power Supplies, computer equipment, TV's and communications gear. Also they mightn't be used for hot, vibration or electrically noisy environments.
@Dr. Smith Capacitive dropper with zener diode?
@Dr. Smith Also, if you're interested I did a full reverse-engineering of the cheapest 5V USB charger on eBay (in 2016, at least).
i would love to see what the failure mode is when you overvolt the input or overheat the regulator
That would be a waste of a very expensive part!....oh wait...
@@stuartcoyle1626 i am actually willing to pay out of pocket for the damaged chip, this kind of R&D costs companies thousands!
This kind of chips have a good overvolt/overheat system denominated: MagicSmoke™ which it's cool because warns you if you're damaging the chip with a visual and smell warning, even if you exceeded it too much, it can shine bright!
There are only 4 possible modes, depending on whether or not the input is current- limited. 1) The output shorts to Vcc, 2)Vcc shorts to ground, or 3)Vcc goes open, and 4) output pulls to ground during physical destruction. Determining whether Vcc was shorted to output through a commonalized-ground would require microscopic forensics.
Really would be more interesting to see what the loaded output looks like when giving abusively noisy inputs.
Just wanted to say thank You for another great video, I learn so much from your videos! I'm a student of electrical engineering by the way...
Great video as always, Dave. Would have loved to see the effect of input side decoupling, though.
1.3 billion people in China using electronics every day, so cents matter for sure. :-)
About 80% of the components I used in the past few years only cost several US cents, and I've got quite a few cheap but working options.
Btw, I can help translate those datasheets, in case you need.
And thanks for the videos. :-)
Not heard of Skyworks Inc :-O It is one of the major RF MW manufacturers...
I'm not into RF
Haha was about to say the same thing :)
RF = Radio Freaks
as well radhard ICs for space applications
Never heard of Alpha or Conexant? They merged to form Skyworks. HQ in Woburn Mass.
Skyworks is actually a kick ass company. They make some great RF products.
Rockwell begat Conexant, Conexant begat Skyworks. New-ish name (2002), but not a new company.
They have a GPS that has highest refresh rate. However I know that documentation sucks.
Dave gives us a lesson on qualifying 3 terminal regulators. Well done.
I am using this 662K regulator from last 3 years in lots of my products and haven't faced any issue. Its one of the best regulator
These I would love to see decapped and analyzed!
It'll have a keylogger hidden in it somehow ;)
Send some to electronupdate
Dave, please don't break LCSC :P All these videos about them, I'm going to start having difficulty finding stock on parts.
I've used LCSC for almost a year now - GREAT company and friendly staff. I'm really happy for them, they are growing quickly. Some back story, I don't believe they are a new company. Before LCSC.com, they were SZLCSC.COM which is the Chinese Mouser for China. They just decided to start offering some of their catalog internationally, and it seems to be catching on. Again, I wish them well. Sadly, as the secret gets out, I hope my prices don't start creeping up.
LCSC - Love Components Save Cost! as they were originally branded. Actually, LCSC is for the Chinese name of the company Lichuang (LC). Not sure what the SC stands for, I think it was also a Chinese name. But it could also be LiChuang Shenzhen, China or Corp. I don't recall, the SZLCSC site isn't working at the moment (maybe they moved everything to LCSC.com). If anyone is able to find the original Chinese words that LCSC is named for let me know.
Also, check out their sister companies. EasyEDA (which is how I first found out about them) and JLCPCB. If you order PCBs from JLCPCB and order your parts from LCSC, they will ship the components with your PCBs for free (under 1kg). EasyEDA is also relatively new. I came across them one day while looking for a browser based schematic editor. The company owner reached out to me to ask how I liked the site and I provided him some feedback. He actually responded and was very receptive.
Strange Parts did a factory tour of LCSC. The lady who escorted him through the factory is quite a hard worker - early on, she was the primary point of contact for the companies - JLCPCB and LCSC. Very pleasant and helpful. I can't say enough good things about these companies and their employees.
If you have feedback for them, they will listen. The feature which allows sorting parts by in-stock qty was a feature request I had made. As these are mostly parts that we in the West don't normally deal with, it's difficult to know which parts are reputable and which might be difficult to work with. I found that parts which were highly stocked usually are widely used. At times I would be browsing the site and watching Quantities of parts suddenly go down by 300k at one time. So, they move a lot of parts.
For all my serious designs, I source parts from LCSC and make my designs around these parts. I order my PCBs from JLCPCB, then put in my order for components to ship with my JLCPCB order. "Winner winner chicken dinner!"
Just when you think dave has done it all, here is is keeping us interested again with great content. good on ya dave. from scotland.
That means if you want it in a DIP, the package likely out-costs the part!
Not likely, but sure does. Packaging is major part of device cost these days.
Yep, packaging is a big part of the cost at this level.
Sixta16 Would it raise or lower the price to use the tiny 5 terminal (2 unused) 1x1mm package that NXP offered some LDOs in?
Sixta16 un packaging has always cost more: partial reels never decrease the part cost.
@@EEVblog I want one in a good ol' metal TO Can!
Nice thanks for sharing the CN inner marked again...👍😄
The more I look into the Chinese market the more interesting it gets!
@@EEVblog Loving the series so far!
What happened with Padauk uC reverse engineering series 😐
It's not worth the effort.
@@EEVblog Noooo, It looked super interesting and the the guys in the forum made it much easier. Its not about the effort, its about the learning experience, and reverse engineering techniques in general ! hope you reconsider that !! :( .
@@ibrahimabukharmeh489 If you want that experience, the PICkit programmer and protocol is well documented and you can build your own with no restrictions. Google it.
@@Peter_S_ but ... but ... reversing the protocol!
@@ibrahimabukharmeh489 i dont think they can do it.
Hi Dave
Another beautiful introduction. I checked LCSC website. It seems interesting. Thanks a lot.
"Out of Stock" Wondering how many people saw this and ordered a reel.
lcsc actively monitors search request for parts, i once looked at a lm675 power opamp which they didnt even had listed, 2 days later i looked again and they were on "available for order" ..which they still are
Those 662k regulators show up on all of the cheap chinese electronics modules
I worked for Lucent when they had a TAD division (telephone answering device) . I was an app's e engineer. We might win or lose a sale, based on if the BOM varies by a penny for the entire device built with our chipset, which was only a fraction of the overall cost.
That's a fine mad part review you got there, Dave!
I see no harm using them. Is you need 10k of them, then even spending few hours to test it good, would still be a cost saving. The performance without any output capacitance is quite impressive too. And these are pin compatible with gazillion other fixed regulators, so you are not locked anyhow during design or later. I am sure these are very popular in China and you can probably have a lot of them in various products around, and you do not even know. I wouldn't be surprised if they produce a billion of these regulators per year, with almost no faults.
So, lets say 10k. Thats 100 bucks. You save 900. How much engineering time does 900 bucks buy you, and how much money is left?
@@PlasmaHH if you are in China, that is probably a lot of engineering hours. And very likely you are familiar with these chips already anyway. Few hours of quick checks with any chip would be usually enough.
The thing you have to think about is that these obscure Chinesium semiconductor suppliers seem to have some level of dated wafer fab capabilities. There seems to be a plethora of small wafer facilities across the country.
Lived in Shenzhen and know about this manufacturer. Fuman, Fine Mad, Fine Made and Superchip (hilariously) are all valid names... Fuman is in Mandarine. Fine Mad is direct translation from Cantonese pronunciation, and some HK dealer definitely thought it was such a crazy translation and altered it to Fine Made. After the IPO this company finally adopted Superchip as official English name. It is a quite qualified manufacturer featuring many power ICs. Their TC4056 (equivalent of TP4056 made by another Chinese plant in Nanjing) is 20% of the market in low power Li-ion batt charger. Super cheap and good quality.
I need more of these videos in my life
I'm still curious how many of these 3000 Dave will actually use.
Hi Dave, you could do a serie of qualifying a chip like this from start to finish. This would like you said take weeks, but it will teach young engineers the amount of work you have to put in making a reliable product.
Do they survive reverse input voltage? ie battery equipment use.
Skyworks Solutions is common in RF type components, they acquired Advanced Analogic Technologies so they now produce regulators and other power components too.
Pleased to note that as Dave was saying "Shen Zhen Fine MAAAD" a dubstep mix ad came up for MORNSUN :D
Is this going to have had a temperature increase at the higher output current?
I wonder if this part includes good ESD protection. Leaving that out would make the die way smaller and cheaper.
He called the bag that the reel came in a “hermetically sealed” thing to keep moisture out, but it sure looked more like an anti-static bag to me. And maybe really necessary because if the reason you gave in your comment.
Lol. Fine Mad. Getting your own company's name wrong on the literature is amazing! Wonder how much you paid for shipping DJ?
I live in Thailand and use LCSC when I need a part quickly. Good service and quality and they stock some of the oddball MoSFETS found in computers. Recommend
Fabulous, we use linear regulator a lot here, whilst not perfect their performance far exceeds our expectations!
So should we replace the penny with voltage regulators?
I bought the 1117's and some lipo chargers after the $0.03 micro video. Thank you for telling us about this site
lcsc,jlcpcb,easyeda are subs of same company.
See if the regulation will latch up by inputting a10 Hz square wave above Vreg and check for runt/over-shoot voltages as the component self heats.
Blows my mind that tiny thing can handle 1W of power. Unreal.
It delivers one watt, but dissipates internally much less than that or else it would overheat and fry itself quickly (unless a heat sink is somehow attached to the chip).
I wonder what the performance, reliability and endurance is like compared to similar part from a known manufacturer, like ST or Texas Instruments etc etc.
any concerns regarding life expectancy?
Antoine Roquentin potential failure modes might prompt isolation if the connected devices are meaningful but choosing to produce discrete VRs when there are designs specifically made of multiple cheaper parts specifically to get around a need for one, means the need for having a VR in the first place is partly because of space considerations- and no space always means having hot neighbors nearby. I’m sure you can connect the dots from here.
At that price, I'd be concerned
You may find sc662k-3.3 on most 0.96' OLED module ,it's heavily used.
Did I miss something or Dave didn't test for the dropout voltage?
Wouldn't that be the main specification for an LDO regulator?
i always wondered where ebay kits get the regulators that explode if shorted for an instant
Watching this video will cost me more than 1 cent.
Nice! But what's that little test lead adapter you have for your BK Precision load? I could use one of those for my 8600...
I giggled a bit in the banner of LCSC they are touting "many manufacturers such as AUTHORIZED brands of Changjiang Electronics Tech (CJ), Shenzhen Funan Elec..." but they are eating our lunch anyway. Good stuff and like to see interesting components from diverse suppliers.
Just had a crazy idea... put a bunch of these in parallel to see just how much total power you can get before things get a little out of hand lol.
The torex regulators are available for ~2 cents and they have English datasheets.
What's the absolute current limit? So the point at which the overcurrent protection triggers?
With µC at $0.03 one would expect regulator for $0.0002 - 1 cent is a rip-off !
You are doing a great job to introduce Chinese parts to the west (south in your case) . The markup of the supply chain is just crazy and the mainstream manufacturers like TI, MCHP etc supports that by setting price to allow that . This kills many viable products just because it is to expensive to buy at retail and reselling to retail. In China this is not the case and part of why the electronics industry is taking over the world even with crappy products.
thanks a lot.
can you have a look at the LTZ1000
Are your scope and electronic load putting any capacitance on the output of the regulator?
Press F to pay respects to Bob Widlar and the mighty 723.
Hammers at the ready.
F
F
+tocsa Widlar was one of the early pioneers who knew how to NOT get cheated of millions by his employer.
F
The question is, will you use those in a project Dave? Or did you get them just for fun?
Did you measure temperature? You gave it a fair bit of abuse, just wondered if it got hot?
Yeah nice but do they blend?
2019: voltage regulators for one cent!
2023: voltage regulators in stock!
16:32 I thought you were going to say, "McFly, McFly hello think buddy, think!" Or something .... Lol
Hey Dave curious if you had any input on the voting machines overheating issue I don't know if that is something that you have the ability to comment on but it seems like an interesting technology problem that is relevant to current affairs over here in the US of a
Dave, you may try some Chinese Sync Buck DC-DC 5V to 3.3V as well as inductor. The IC itself just 5 cent, inductor cost another 5 cent
It would be good if they made a regulator with an extra pin to program the parameters serially, such as output voltage and current limiter.
Most Chinese products work great when they're new, but how long will they last? Remember the cheap Chinese electrolytics? I think the real question isn't "How much can I save by using these," but rather "How much could I lose if they fail prematurely."
Today the useful life of a device is not only limited by the durability of the components, but also by things like "how long is the service it uses being offered", "how long is the software supported with security updates" and "how fast is the technology developing" (rendering the device obsolete because newer more efficient solutions are developed).
25 years ago a TV was essentially a static device that you could repair when it is broken and then continue to enjoy the same entertainment it offered before.
Today, a TV is a computer terminal that includes today's receiving and demodulation tech, todays internet connectivity and apps, and todays display technology and efficency.
5 years later it essentially is obsolete because transmitters have moved on to new more efficient technology, the software in it is insecure and no longer supported, the apps no longer work with todays services, newer sets have better picture quality at lower energy consumption, etc. By the time it breaks, it had passed its end of useful life anyway.
This makes long enduring parts less of an issue. More focus should be on recycling the materials used so a new device can be manufactured from it.
Of course all of it comes at the cost of the jobs of the TV Repair men.
The use of lead free solder will kill off many products with time due tin whisker growth causing shorts.
Great video. The only issue with buying from China is the return shipping if it comes up. It's super cheap to have stuff sent from China, but sending back to China is much more expensive, to the point where you'd actually lose money by sending an item back. Be sure to check the return policy, and if it's not good, make sure you're willing to take the risk.
How long did it take to get them (sorry if I missed this bit of information in the half hour video)?
3k of them! I wasn't aware Dave had time to build/work on projects outside his full-time job entertaining us.
what about thermal stability , you should check them at least with a freeze spray and hairdryer. Its Not much complicated.
You can now sell them with a good gain! Is IC investing the future? :)
The regulator use, and see everywhere is the ubiquitous AMS1117-3.3 ... and they cost very little as well. No way their dropout is 18mV though. Sadly, I have several other kinds of LDO regulators, and never measured a dropout even approaching the datasheet claims. Got to try out some of these SC662Ks!
How hot does it get at different loads?
How quick do these guys ship to the US?
what is that break out PCB on your power supply?
Hey, Skyworks is pretty big in the RFIC world.
Dave could you please post the recorded programming waveform for the 3 cent micro. Someone (js) on the forum has already reverse engineered the file formats and such. If we have the waveform the community can reverse engineer it for you
Whats happens if you use one of yours supercaps on this projects?
wow. i think the rocks in my yard are more expensive than these.
Are they space qualified?
There's only 20 good ones at the end of the reel for you to test?
Will David make a part 2 for the reverse engineering of the 3 cent micro?
can you compare it to a very expensive one? with the same tests