Replacement for a 422j 250v capacitor and 223j 150v mylar capacitor

Passives Capacitors
,
1

I am fixing the bias oscillator of a tape

recorder and I need to replace two

capacitors 422j 250v mica and

223j 150v mylar. what are the best

alternatives.

2

Such markings would typically indicate 4.2nF and 22nF respectively, both with 5% tolerance.

Mica caps are largely obsolete/unpopular at this point with ceramics of a C0G temperature characteristic probably the most likely alternative followed by a film of some sort. Something that’s temperature-stable and fits would be the thing to look for, in either case.

These might be some options to consider.

3

Rick,
Thank You for the prompt reply.

I like to restore tape recorders. The passive components you have suggested will help repair the bias oscillator of one of these machines.

I have ordered the suggested parts.

I will let you know how I fared.

Regards,
Dominique.

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