Title imageTitle image




12SN7-GTA Pinout
basing pinout


12SN7-GTA Substitutes
Different rating or performance 12SN7, 12SN7GT, CV925
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-GTA Ratings
Vh Ih VaPeak VaMax PaMax IkMax Cgk Cak Cga Notes
12.6 0.3 1,500 300 3.5 20 2.8 0.8 3.8 First tube
12.6 0.3 1,500 300 3.5 20 3.0 1.2 4.0 Second tube


12SN7-GTA 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-GTA 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) 12SN7GTA: 12JN8.pdf (76733 bytes), 12SA7.pdf (56736 bytes), 12SN7GTA.pdf (268809 bytes), 6SN7GTA.pdf (397641 bytes), 6SN7GTB.pdf (333220 bytes), 6SN7GTB.pdf (479306 bytes)  12SN7GT: 12SK7.pdf (57775 bytes), 12SN7GT.pdf (210909 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)  6SN7GTB: 6SN7GTB.pdf (16518 bytes), 6SN7GTB.pdf (262500 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

All content on this page is copyright 1997-2023 Duncan Amplification. TTWWDIITWI

Version: PHP release 1.14 02-Nov-2019