(Topic ID: 220160)

Are capacitors made cheaper/inferior than ever before?


By NYP

1 year ago



Topic Stats

  • 25 posts
  • 14 Pinsiders participating
  • Latest reply 1 year ago by G-P-E
  • Topic is favorited by 8 Pinsiders

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    #1 1 year ago

    Pretty sure I know the answer to this question but is it because they are "made in China" reasoning? Seems to me that caps in the old days used to last many years and now they leak and fail after a few years or sooner. Is there a way to still find quality caps? Are they rated somehow so you can tell the difference between cheap ones and quality ones?

    #2 1 year ago

    The phrase They don't makem like they use to" applies here and just about everything.

    #3 1 year ago

    Look for "Made in Japan". The last motherboard I purchased from a Taiwanese brand had "Japanese Capacitors" in big letters on the box as a feature.

    #4 1 year ago

    List of bad capacitor manufacturers:

    https://www.badcaps.net/forum/showthread.php?t=388

    List of GOOD capacitor manufacturers:

    https://www.badcaps.net/forum/showthread.php?t=414

    And don't forget that even good capacitors are counterfeited, especially if bought on ebay.

    10
    #5 1 year ago

    Don't trust any ebay caps

    lll (resized).jpg
    #6 1 year ago

    I suggest you buy high temp high hour caps from mouser. Always buy Japanese. Most caps are only rated for 1000 hours (though that is at max load). I mostly buy nicheon (maybe bad spelling) or Panasonic caps. Gl

    #7 1 year ago

    About 15 years ago there was a huge rash of bad capacitors, even from reputable manufacturers and suppliers, due to chinese industrial espionage gone wrong. Apparently one company stole a formula from another... not realizing that the stolen formula was defective. And of course it spread on from there. Was the "bad formula" a deliberate plant? Wouldn't surprise me!

    https://en.wikipedia.org/wiki/Capacitor_plague

    https://www.theguardian.com/technology/blog/2010/jun/29/dell-problems-capacitors

    Fun times. And I'll bet the fallout did not end there: I *still* encounter defective caps in equipment built less than 10 years ago.

    But man, I remember my main rig at the time ran a Gigabyte Athlon motherboard where every cap was burst and foaming like a freshly poured draft stout, yet that thing NEVER gave me any grief! But my parents' PC's had boards with just a couple caps barely bulging and had no end of trouble. So even "defective caps" aren't all equally so, it would seem.

    #8 1 year ago
    Quoted from vid1900:

    Don't trust any ebay caps

    That looks more expensive to produce then to just make the capacitor.

    #9 1 year ago
    Quoted from Pugsley:

    That looks more expensive to produce then to just make the capacitor.

    Inside that smaller blue capacitor, is yet another smaller capacitor.....

    #10 1 year ago
    Quoted from vid1900:

    Inside that smaller blue capacitor, is yet another smaller capacitor.....

    You just blew my capacitor...

    #11 1 year ago
    Quoted from vid1900:

    Inside that smaller blue capacitor, is yet another smaller capacitor.....

    Are you sure they aren’t really nesting dolls for nerds?

    #12 1 year ago
    Quoted from vid1900:

    Don't trust any ebay caps

    Wow!

    #13 1 year ago
    Quoted from vid1900:

    Inside that smaller blue capacitor, is yet another smaller capacitor.....

    MATRYOSHKAPS!

    matryoshka-components-01 (resized).jpg

    #14 1 year ago
    Quoted from vid1900:

    Inside that smaller blue capacitor, is yet another smaller capacitor.....

    Actually, in all seriousness, there is an occasional legit case for that. About 10 years ago I rebuilt a 1957 Zenith Hi-Fi where all the caps were shot. The spec'd electrolytics of that era were no longer available lonnnng ago. And they were huge, besides. So what I had to do was hollow out the original canister, and wire in newer components in series / parallel (can't remember what the math was, now). I hid the newer smaller components in the older canister so it would retain the vintage look as well as retain the original mounting lugs within the circuit.

    Anyway, HOLY HELL does that HiFi - with all 10 watts to its name driving two 12" woofers - completely astound every single person who hears a demo. The bass that thing puts out is otherworldly, and the clarity and volume is astounding. Tubes aren't bullshit, man. I just wish that particular model was stereo.

    #15 1 year ago

    Good info, thanks for the replies. I asked because I had a problem with my garage door opening all by itself. It was intermittent and driving me crazy, not a comforting feeling knowing you slept all night with the garage door wide open and anyone could have walked right into my home. The liftmaster company had no idea what it was of course. One day it happened and I heard clicking from the button, took it off the wall, opened it up and saw what you see in the pictures. After threatening to sue their tech called me and admitted they were aware of the leaking caps and have since redesigned the button, but after sending me new wall buttons I realized they really didn't. Was thinking about replacing the caps myself, not sure yet. Funny how your experience fixing pinball machines comes in handy with other stuff....

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    #16 1 year ago
    Quoted from KenLayton:

    List of bad capacitor manufacturers:
    https://www.badcaps.net/forum/showthread.php?t=388
    List of GOOD capacitor manufacturers:
    https://www.badcaps.net/forum/showthread.php?t=414
    And don't forget that even good capacitors are counterfeited, especially if bought on ebay.

    I second the good list, specifically Nichicon. We had power supply issues with one of our products with inferior caps in the power supply. Our research teams approved modification was to replace them with Nichicon brand caps. We replace around 1000 caps with them over a decade ago with good results.

    #17 1 year ago
    Quoted from NYP:

    Good info, thanks for the replies. I asked because I had a problem with my garage door opening all by itself. It was intermittent and driving me crazy, not a comforting feeling knowing you slept all night with the garage door wide open and anyone could have walked right into my home. The liftmaster company had no idea what it was of course. One day it happened and I heard clicking from the button, took it off the wall, opened it up and saw what you see in the pictures. After threatening to sue their tech called me and admitted they were aware of the leaking caps and have since redesigned the button, but after sending me new wall buttons I realized they really didn't. Was thinking about replacing the caps myself, not sure yet. Funny how your experience fixing pinball machines comes in handy with other stuff....

    You can pull on the handle on the end of the string to lower the garage door. Pull on that and manually close the door. There are slide locks on either side of the door!

    #18 1 year ago
    Quoted from cougtv:

    You can pull on the handle on the end of the string to lower the garage door. Pull on that and manually close the door. There are slide locks on either side of the door!

    I was explaining the problem with my openers opening by themselves but I know how to operate them manually thanks.

    #19 1 year ago
    Quoted from NYP:

    Good info, thanks for the replies. I asked because I had a problem with my garage door opening all by itself. It was intermittent and driving me crazy, not a comforting feeling knowing you slept all night with the garage door wide open and anyone could have walked right into my home. The liftmaster company had no idea what it was of course. One day it happened and I heard clicking from the button, took it off the wall, opened it up and saw what you see in the pictures. After threatening to sue their tech called me and admitted they were aware of the leaking caps and have since redesigned the button, but after sending me new wall buttons I realized they really didn't. Was thinking about replacing the caps myself, not sure yet. Funny how your experience fixing pinball machines comes in handy with other stuff....

    I had the same issue with my opener after just 6 months. Came home door was open couldn't figure out why. Happened 3 more times. Looked online caps leaking is common on those openers. I replaced the caps on mine it was easy. Works great now.

    #20 1 year ago

    I stick with Nichicon, Chemi-con. or Panasonic. Keep in mind they have application specific series for caps. Like Nichicon PW series is high reliability and low impedance made for switch mode power supplies.
    http://www.paullinebarger.net/DS/Nichicon/Nichicon%20Series%20Chart.pdf

    That said i think the poor quality early failure scare of capacitors is largely over blown in old caps and new caps. Everybody loves a capacitor kit. People love selling them, buying them, and installing them. most caps that get replaced are probably fine. If you buy a good brand I don't think they are inferior to old ones. Ask me in thirty years tho... I will probably have a better idea then.

    For what its worth i have some switcher supplies that are full of changX or chongX that have been running nearly 24/7 for years. The chang/chongX caps test proper as GP cap and seem to be at least serviceable for years when not stressed. Not instant fail crap. People still have the fear because of the bad cap problems from 10-15 years ago.

    You get way you pay for tho. If you are making a product, probably smart to go with a properly selected good brand cap.

    #21 1 year ago

    I got this in the mail the other day.

    20180630_092656 (resized).jpg
    #22 1 year ago
    Quoted from barakandl:

    I got this in the mail the other day.

    I got a very similar post card last week, lol

    #23 1 year ago

    So did I. Only one in the list that I use are United Chemi-Con but not enough to consider this.

    Panasonic is my current favorite but I'll use Nichicon and Rubycon as well (watch out for "Rulycon"!). Been trying to stock the long life EB series but they cost considerably more.

    Quality from some of the old US brands such as Richey, Erie (gone) & Illinois Cap are OK. These guys have been around 50+ years but have been caught up in the 'outsource it and make it cheaper' mantra... too bad. Illinois Cap has been making lots of improvements last few years, been buying up some of the other big cap companies and are outsourcing a bit less. Hopefully they'll continue. Trying to work out a distribution deal with them but it's like banging your head on a wall talking to these guys.

    Then there are the Chinese brands that are absolute crap such as GSC, CapXOn, Lelon, etc.

    #24 1 year ago

    I got the above class action notification about capacitors on Friday.

    With a 35M dollar settlement, divided by the billions of capacitors sold during the time frame, I imagine my share of that settlement would be a tiny fraction of a single penny.

    #25 1 year ago

    I'm thinking $30M of the $35M was used just to mail out all the post cards.

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