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12SN7-GTA Pinout
basing pinout


12SN7-GTA Substitutes
Different rating or performance 12SN7GT
Different filament voltage 6SN7GT, 6SN7GTB, 8SN7GTB

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
Automatica 6SN7GT: html
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 6SN7GT: html, html2, html3, html4
Frank Philipse 12SN7GTA: 135/1/12JN8.pdf, 137/6/6SN7GTA.pdf  6SN7GT: 137/6/6SN7GT.pdf  6SN7GTB: Acrobat PDF  6SN7WGT: 138/6/6SN7WGT.pdf  6SN7WGTA: 087/6/6SN7WGTA.pdf
Triode Electronics 6SN7GT: gif1, gif2, gif3, gif4, gif5
TubeZone 6SN7GT: pdf


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