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12SK7 Pinout
basing pinout

 

12SK7 Substitutes
Close or identical 12SK7GT, CV543, CV544, CV922, VT131

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.

 

12SK7 Ratings
Vh Ih VaMax Vg2Max PaMax Pg2Max Cgk Cak Cga
12.6 0.15 300 300 4.0 0.4 6.0 7.0 0.003

 

12SK7 Application Data
Class Va Vg2 Vg1 Ia Ig2 Ra S
A 250 100 -3.0 9.2 2.6 800,000 2.0
A 100 100 -1.0 13.0 4.0 120,000 2.35

 

12SK7 Data sheet links
National Valve Museum 12SK7: html
oldradio.qrz.ru 12SK7: MK buizen handboek
Frank Philipse 12SK7: .gif file, 093/6/6SK7.pdf, 121/1/12A8G.pdf
Frank Philipse (Pocnet mirror - Patrik Schindler) 12SK7: 12A8G.pdf (82544 bytes) (fr), 12SK7.pdf (219404 bytes), 12SK7.pdf (57775 bytes), 6SK7.pdf (349513 bytes)
Frank Philipse (Wildcat mirror - Jörg Jan Münter) 12SK7: 12A8G.pdf (82544 bytes) (fr), 12SK7.pdf (219404 bytes), 12SK7.pdf (57775 bytes), 6SK7.pdf (349513 bytes)

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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