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5AS4 Pinout
basing pinout


5AS4 Substitutes
Close or identical 5AS4A
Different rating or performance 5U4, 5U4G, 5U4GA, 5U4GB, 5U4GT, CV575, CV841, VT244, VU71

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.


5AS4 Ratings

No information available

5AS4 Application Data
RMSin Irect
450-0-450 275


5AS4 Data sheet links
Dave Cigna''s Pages (DuncanAmps mirror) 5U4GB: html
Duncan''s Amp Pages Various: Acrobat PDF (7 pages)
Peter Millett 5AS4: Acrobat PDF 27K  5U4-GB: Acrobat PDF 300K
National Valve Museum 5U4G: html2  5U4GB: html
oldradio.qrz.ru 5AS4: MK buizen handboek  5U4G: Brans Vademecum
Frank Philipse (Wildcat mirror - Jörg Jan Münter) 5AS4: 5AS4.pdf (36141 bytes)  5AS4A: 5AS4A.pdf (120480 bytes), 5AS4A.pdf (145057 bytes), 5AS4A.pdf (38612 bytes)  5U4G: 5U4G.pdf (110623 bytes), 5U4G.pdf (23046 bytes) (fr), 5U4G.pdf (342763 bytes), 5U4G.pdf (56063 bytes)  5U4GB: 5R4GB.pdf (209863 bytes), 5U4GB.pdf (200623 bytes), 5U4GB.pdf (474101 bytes), 5U4GB.pdf (898939 bytes)
Triode Electronics 5U4: gif1, gif2, gif3, gif4, gif5, gif6
TubeZone 5U4: pdf

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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