Electronics > Beginners
What kind of capacitors are these?
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oPossum:
These are in a Heathkit IN-27 decade capacitance box. They have a waxy feel. Looks like a single layer dielectric - not wound. SRC may be the manufacturer - Societe de Composants Record.

What is the likely dielectric and plate material?
RJFreeman:
My guess would be Silver Mica Capacitors
+Mikie:
My guess would be paper capacitors. If you're interested in replacing them use either ceramic, MKT or MKP.
Z80:
I'd say they were mica caps, they look like old micas.  Being used in a substitution box they need to be accurate and stable.  I seem to remember most of the paper caps were cylindrical and as reliable as a 2 week weather forcast.
vk6zgo:

--- Quote from: RJFreeman on July 19, 2018, 04:31:24 am ---My guess would be Silver Mica Capacitors

--- End quote ---

Mine, too!
Australian mica caps usually were coated with hard Bakelite, but those from the USA & UK often had that waxy encapsulation.
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