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#1
09-30-2009, 09:53 PM
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Gentleman, check your caps!
I have been getting my caps(there advertized as orange drops but they are really red) off of the internet. I have seen the size get a little smaller over the years but recently they got dramatically smaller. I tested mine under full 630 volts and they seemed ok. Well I found out that they are really 63 volt caps.I really do not want to give out the name of the company but please check yours. These do not have a manufacture name on them . As an example it may only have written on it 103j. The "j" is the code for 63 v. A 105j is big enough to have 63v on it. It is still hard to tell because the print is small enough to make you think that it is a crappy 0 and not a v.
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#2
09-30-2009, 10:09 PM
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Did you contact this place and let them know?
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#4
10-01-2009, 12:31 PM
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Yikes. That's not good at all. I just got a big order a few weeks ago I'll have to check.
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#6
10-01-2009, 07:13 PM
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Sean is indeed correct - I've been selling parts (locally) for over 20 years - the "J" is the tolerance code for 5%. The entire EIA code is:
F = ±1% G = ±2% J = ±5% K = ±10% M = ±20% Now for POLYESTER film capacitors, there is a letter/number code for voltages - it is: 1H = 50 2A = 100 2D = 200 2G = 400  Happy to help,
__________________
Brian USN RET 22YRS (Avionics/Cal) CET-Consumer Repair and Avionics ('88) "Capacitor Cosmetologist since '79" When fuses go to work, they quit!
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#7
09-30-2009, 10:22 PM
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This sounds like it could have been an honest mix up. But, do a google search for "counterfeit electolytic capacitor" You find many manufacturers reporting that theirs are being counterfeited.
John
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#8
09-30-2009, 10:37 PM
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The problem was "their" supplier. They only wanted 630 volt and when the shipment came and they were all smaller. No one thought to ask, they "assumed" like I did that this was new technology at work. I have put one on my heathkit and left it there with 630 volts applied to it for about 20 minutes and the caps in question actually held. Once I really paid attention to them I did notice that they will leak a little unless you back down the voltage.
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#10
10-01-2009, 10:29 PM
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Well, Thank you for gentleman for filling in the cap gaps as far as codes are concerned. The ones I have been getting must not be that good if they only have as an ex. 103j on them. It is nice to know this as I have radios that may not be dollar- wise valuable but I cherish them and I might be putting crap in them.
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#11
10-04-2009, 09:07 PM
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Well ,evidently I have been using chinese caps. But this particular issue I am refering to of buying what should be 630 volts and finding out they are 63 volts is another good lesson for us. The assumption that new equals good, that they could not be bad.This could very well be why my last tv kept giving me fits. I assumed new parts could not be bad but how long can a tv full of 63 volt caps realistically last?, good quality or not.
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#12
10-08-2009, 06:53 AM
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The full Number/Letter Code for Voltage
Somehow, it got truncated in my earlier post:
For POLYESTER film capacitors, there is a letter/number code for voltages - it is: 1H = 50 2A = 100 2D = 200 2G = 400 2J = 630 Cheers,
__________________
Brian USN RET 22YRS (Avionics/Cal) CET-Consumer Repair and Avionics ('88) "Capacitor Cosmetologist since '79" When fuses go to work, they quit!
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