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EF37A Pinout
basing pinout

 
EF37A Substitutes
Close or identical 5A157D, CV1056, CV1404, CV358, CV5080, EF36, EF37, OM5, OM5A, OM5B, VR56
Different rating or performance 6J7, 6J7G, 6J7GT, ARP16, CV1074, CV1935, CV1936, CV1937, VT74(RAF), VT91, VT91A

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.

 
EF37A Ratings

No information available
EF37A Application Data

No information available
EF37A Data sheet links
Duncan''s Amp Pages Vade Mecum s. 70: Acrobat PDF (2 pages)
National Valve Museum EF37A: html  6J7: html2
oldradio.qrz.ru 6J7: MK buizen handboek  6J7G: Brans Vademecum
Frank Philipse (Wildcat mirror - Jörg Jan Münter) EF36: EF36.pdf (83603 bytes)  EF37: EF37.pdf (380548 bytes)  EF37A: EF36.pdf (144243 bytes)  12J7GT: 12BA6.pdf (60988 bytes), 12J7GT.pdf (173104 bytes), 12J7GT.pdf (77694 bytes)  6J7: 6J7.pdf (173434 bytes), 6J7.pdf (212802 bytes), 6J7.pdf (75369 bytes) (fr), 6J7.pdf (78272 bytes), 6J7.pdf (86223 bytes)  6J7G: 6J7G.pdf (504682 bytes), 6J7G.pdf (71000 bytes)  6J7GT: 6A8GTX.pdf (438870 bytes), 6J7GT.pdf (111793 bytes) (fr)
TubeZone 6J7: 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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