[5pc] 500V Silver Mica Capacitors; 25 values:  20pF .. 2700pF

On offer is a wide range of new silver mica capacitors each rated to handle 500V supplied in packs of 5pc (at a fair price: most are Cornell Dubilier brand, which are £3.78+VAT each @ Mouser ).

I have not individually photographed or measured dimensions: If these details are important for your application let me know specifics and I'll try to help. Likewise if you'd like a custom selection I can create a one-time listing: just let me know ...

Silver micas are my favourite capacitors for RF and audio work. They do not contain organic compounds (plastics), so are reliable over time where other capacitors are less so.  I don't think I've ever had to replace one as part of a restoration.

They are super stable and handle high frequencies with excellent 'Q' and other parameters. For frequency dependent networks, such as filters and oscillators they're unbeatable.

The usual downside is the cost, based on the precious metal construction, and the move to surface mount packages. As such they are virtually unused for factory built gear today and found only in custom hand-built equipment for and by radio hams and audiophiles. This collection was assembled over some years, primarily from Australia and the USA - and I bought rather more than I needed.

I have created 3 listings based on maximum working voltage, one each for 500V, 300V and 100V/unknown. The 500V types are most useful for RF power and valve/tube circuitry where high voltages are present. Modern semiconductor circuits will be fine with the 300V or 100V types. The unknown voltage types may well be 300V or 500V capable but there's no way of easily checking.

Please take a look at those other listings if the values you require are not listed here.


I'm currently adding new items frequently, so please check out  my other listings  for related items.

About the Seller : RFPlus

I'm Jon, a lifelong hobbyist, professional engineer and now occasional seller on Ebay, having sent over 10,000 items around the world over the past 17 years. I am not a business/company despite Ebay's classification to the contrary, though I do have a lot of parts and gear which should go to a good home.

All parts for sale are my private property, in stock in Cornwall, Southwest UK, and ready to post to the world via Royal Mail, or if larger/heavier via your arrangement/collection. I post via UK First Class post: my P&P charge is at cost but I'm happy to combine multiple items in a package for that one charge. You may need to use the Ebay Cart (and request a total if Ebay miscalculates).

If there's a problem with anything, I can send a replacement order, refund your money or do whatever it takes to make you happy. I hope my feedback gives you the confidence that I'm good to deal with. Any questions, please ask!

Thank you for reading ...   Jon @ RFPlus