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6SQ7 Pinout
basing pinout

 

6SQ7 Substitutes
Close or identical CV1990, CV1991, VT103
Different filament voltage 12SQ7, 12SQ7GT, 6SQ7GT, CV546, CV547, VT104

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.

 

6SQ7 Ratings
Vh Ih VaMax PaMax Cgk Cak Cga
6.3 0.3 300 0.5 3.2 3.0 1.6

 

6SQ7 Application Data
Class Va Vg1 Ia Ra S
A 250 -2.0 1.1 85,000 1.175
A 100 -1.0 0.5 110,000 0.925

 

6SQ7 Data sheet links
Peter Millett 6SQ7: Acrobat PDF 223K  12SQ7: Acrobat PDF 24K
National Valve Museum 6SQ7: html
oldradio.qrz.ru 6SQ7: Brans Vademecum, MK buizen handboek
Frank Philipse 6SQ7: .gif file, 082/6/6SQ7.pdf  12SQ7: 121/1/12A8G.pdf
Frank Philipse (Pocnet mirror - Patrik Schindler) 6SQ7: 6SA7.pdf (83250 bytes) (fr), 6SQ7.pdf (202861 bytes), 6SQ7.pdf (245274 bytes), 6SQ7.pdf (321892 bytes), 6SQ7.pdf (78329 bytes) (de), 6SQ7.pdf (96813 bytes)  12SQ7: 12A8G.pdf (82544 bytes) (fr), 12SA7.pdf (56736 bytes), 12SQ7.pdf (231119 bytes)  12SQ7GT: 12SK7.pdf (57775 bytes)
Frank Philipse (Wildcat mirror - Jörg Jan Münter) 6SQ7: 6SA7.pdf (83250 bytes) (fr), 6SQ7.pdf (202861 bytes), 6SQ7.pdf (245274 bytes), 6SQ7.pdf (321892 bytes), 6SQ7.pdf (78329 bytes) (de), 6SQ7.pdf (96813 bytes)  12SQ7: 12A8G.pdf (82544 bytes) (fr), 12SA7.pdf (56736 bytes), 12SQ7.pdf (231119 bytes)  12SQ7GT: 12SK7.pdf (57775 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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