Chip Core? (second-hand store parts bin find) - Page 1
Forum section: electronics / beginners

author: GiskardReventlov
author_rank: Frequent Contributor
timestamp: March 18, 2014, 10:39:19 pm
content: I found a plastic package that had 49 of these. They look like a chip core. There's no part #s Just a curious find. I picked up a handful of some other random parts too. The blue and black are capacitors and the orange is a resistor.I'll eventually learn to id parts.The blue caps are something I've not seen before. The black is a ceramic cap but larger than what I've seen. The resistor is also larger than what I'm used to seeing so far. Is it worth it to buy more of these caps or resistors? They're cheap.

author: Monkeh
author_rank: Super Contributor
timestamp: March 18, 2014, 10:50:44 pm
content: You sure that's meant to be a resistor?Looks a lot more like a 10pF 6kV ceramic cap to me.

author: GiskardReventlov
author_rank: Frequent Contributor
timestamp: March 18, 2014, 11:02:34 pm
content: Not sure of anything. Thanks for setting that straight.

author: c4757p
author_rank: Super Contributor
timestamp: March 18, 2014, 11:05:01 pm
content: Black one is a mica capacitor, not ceramic.

author: mariush
author_rank: Super Contributor
timestamp: March 18, 2014, 11:06:16 pm
content: brown disc is capacitor, 10pf 6kv ,black thing is mica capacitor, probably 470pF 500v 5% tolerance mil spec (search for cmo5fd and you'll find some ebay listings likethis onefor example)blue one is most likely an inductor in a blue plastic cylinderThe stuff in the first picture... to unclear to tell you anything. Post some proper pictures if you want proper answers.

author: GiskardReventlov
author_rank: Frequent Contributor
timestamp: March 18, 2014, 11:12:25 pm
content: Quote from: c4757p on March 18, 2014, 11:05:01 pmInteresting, mica has some amazing properties.

author: GiskardReventlov
author_rank: Frequent Contributor
timestamp: March 18, 2014, 11:17:38 pm
content: Quote from: mariush on March 18, 2014, 11:06:16 pmHaha! Not looking for answers just a curious find, as I said. No one's refuted my claim that it's a chip core so apparently there's enough detail to agree on that much. Do you have another idea of what it might be?

author: T3sl4co1l
author_rank: Super Contributor
timestamp: March 19, 2014, 02:24:45 am
content: Anyone's guess what the dies are; if you can take a photomicrograph you may find more clues.Offhand I would guess the blue thing is an inductor, but you'd want to measure either way.The ceramic cap is probably 100pF; I don't know that I've seen caps with an actual 1-0-0 code, as such. They usually omit the multiplier under 100pF.Tim

author: GiskardReventlov
author_rank: Frequent Contributor
timestamp: March 19, 2014, 03:48:16 am
content: Quote from: T3sl4co1l on March 19, 2014, 02:24:45 amJust knowing that they are dies is good enough for me. It was a curiosity as they don't carry many electronics parts.QuoteIt seems to have a vent on the side which made me think capacitor. Would an inductor be vented and sealed?At first glance it looks like it could be a mold artifact but closer look and it is a hole.QuoteMaybe an old part?Now I'll try to measure them.

author: matts-uk
author_rank: Contributor
timestamp: March 19, 2014, 01:16:00 pm
content: Here you gohttp://www.circuitspecialists.com/1mh-inductor.html