Strange capacitor ID help.

skiraly017 · July 09, 2006, 04:04:30 PM

I've never seen caps like these before. They look like they're encased in plastic and the only visible markings are "10000J" and "50v". I know the value but not the brand. Any ideas? Thanks.

mikey · July 09, 2006, 05:00:25 PM

Looks like polystyrene caps. No idea what brand.

$uperpuma · July 09, 2006, 05:14:28 PM

yeah they are polystyrene you can get some values at Mouser.. but the bag doesn't list a brand...

Peter Snowberg · July 10, 2006, 02:24:43 AM

Polystyrene caps are the creme-de-la-creme of film caps.

jonathan perez · July 10, 2006, 02:30:28 AM

i agree. ive got a few of those somewhere...ive got better ones, that are longer. not too sure of the make, but definitely sound wonderful.

jonathan perez · July 10, 2006, 02:31:47 AM

i totally just realized thats an area51 wah. man im dumb! hahah what inductor is that??

i worked closely with dan, and he wouldnt tell me where he got those caps from, just that theyre NOS.

R.G. · July 10, 2006, 10:51:20 AM

New old stock POLYSTYRENE?

Gratuitous advertising makes me nuts. Polystyrene is valuable for precision caps precisely because it DOESN'T age to any measurable degree. There's no magic mojo goodness associated with polystyrene caps. And modern ones are made like the old ones. Metalized polystyrene film hasn't had its manufacturing process modified beyond recognitiion by progress.

I take that back. There is no measurable difference between yesterday's polystyrene caps (yesterday being the late 60's when they first came into use) and today's unless the human mind puts them there by placebo effect. But it does allow you to truthfully use the term "NOS" in your advertising.

OK, I feel better now. I guess my visceral reaction to the ... um... liberties that advertising makes with the language is inappropriate.

Peter Snowberg · July 10, 2006, 12:13:27 PM

Quote from: R.G. on July 10, 2006, 10:51:20 AM
New old stock POLYSTYRENE?

Gratuitous advertising makes me nuts. Polystyrene is valuable for precision caps precisely because it DOESN'T age to any measurable degree. There's no magic mojo goodness associated with polystyrene caps. And modern ones are made like the old ones. Metalized polystyrene film hasn't had its manufacturing process modified beyond recognitiion by progress.

I take that back. There is no measurable difference between yesterday's polystyrene caps (yesterday being the late 60's when they first came into use) and today's unless the human mind puts them there by placebo effect. But it does allow you to truthfully use the term "NOS" in your advertising.

OK, I feel better now. I guess my visceral reaction to the ... um... liberties that advertising makes with the language is inappropriate.

Thanks for saving me the rant.

jonathan perez · July 10, 2006, 01:08:34 PM

good call, RG!

man i hate mojo...hahaha

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Strange capacitor ID help.