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UM34 Pinout
basing pinout


UM34 Substitutes
Close or identical 12CD7
Different filament voltage 64ME, 6AF7, 6CD7, 6M1, CV394, EM34, HM34

Warning: Substitutes are given as a guide only - please refer to original manufacturers data sheets to ensure that a substitute is safe and appropriate for your application.


UM34 Ratings

No information available

UM34 Application Data
Va Ia
250 0.75


UM34 Data sheet links
Duncan''s Amp Pages 6AF7: Acrobat PDF
National Valve Museum CV394: html
oldradio.qrz.ru UM34: MK buizen handboek
Frank Philipse (Wildcat mirror - Jörg Jan Münter) UM34: UM34.pdf (101431 bytes)  6CD7: 6CD7.pdf (174332 bytes)  EM34: EM34.pdf (117059 bytes) (fr), EM34.pdf (176249 bytes), EM34.pdf (33900 bytes) (fr), EM34.pdf (93312 bytes)

Bold designators are close or identical, Italic designators are different ratings, different pinouts or different filament voltages. Please see the substitutes at the top of the page for more details

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