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12SN7 Pinout
basing pinout

 

12SN7 Substitutes
Close or identical 12SN7GT, CV925
Different rating or performance 12SN7GTA
Different filament voltage 13D2, 6SN7GT

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.

 

12SN7 Ratings
Vh Ih VaMax PaMax Cgk Cak Cga Notes
12.6 0.3 300 3.5 2.8 0.8 3.8 First tube
12.6 0.3 300 3.5 3.0 1.2 4.0 Second tube

 

12SN7 Application Data
Class Va Vg1 Ia Ra S
A 250 -8.0 9.0 7,700 2.6
A 90 0.0 10.0 6,700 3.0

 

12SN7 Data sheet links
Dave Cigna''s Pages (DuncanAmps mirror) 6SN7GT: html
Peter Millett 12SN7-GTA: Acrobat PDF 23K  6SN7-GTA: Acrobat PDF 282K  6SN7-GTB: Acrobat PDF 14K
National Valve Museum 13D2: html  6SN7GT: html2, html3, html4
oldradio.qrz.ru 12SN7: MK buizen handboek
Frank Philipse (Wildcat mirror - Jörg Jan Münter) 12SN7GT: 12SK7.pdf (57775 bytes), 12SN7GT.pdf (210909 bytes)  12SN7GTA: 12JN8.pdf (76733 bytes), 12SA7.pdf (56736 bytes), 12SN7GTA.pdf (268809 bytes)  13D2: 13D1.pdf (106276 bytes)  6SN7GT: 6SN7GT.pdf (104549 bytes), 6SN7GT.pdf (133934 bytes), 6SN7GT.pdf (407316 bytes)  6SN7GTA: 6SN7GTA.pdf (221413 bytes), 6SN7GTA.pdf (294351 bytes), 6SN7GTA.pdf (397641 bytes)  6SN7GTB: 6SN7GTB.pdf (16518 bytes), 6SN7GTB.pdf (262500 bytes), 6SN7GTB.pdf (333220 bytes), 6SN7GTB.pdf (479306 bytes)  6SN7WGT: 6SN7WGT.pdf (468712 bytes)  6SN7WGTA: 6SN7WGTA.pdf (301961 bytes), 6SN7WGTA.pdf (309503 bytes)
Triode Electronics 6SN7GT: gif1, gif2, gif3, gif4, gif5
TubeZone 6SN7GT: 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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