Uuf = what?

Passives Capacitors
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1

Working on a ampex tape deck.

Parts list specifications call for a “350uuf/500v mica cap”.

I have not seen “uuf” before. What is this value in modern common terms?

Can anybody help me figure this out?

2

Hi @Memphismagnetic, welcome to the forum!

Short answer uuF = pF…

micromicrofarads (μμF; now picofarads, pF)

https://en.wikipedia.org/wiki/Metric_prefix#Double_prefix

https://300guitars.com/articles/capacitor-referance-chart/

Regards,

3

Thank you Robert!