TDSL Tube data [6SQ7]

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6SQ7 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 V	Ih A	VaMax V	PaMax W	Cgk pF	Cak pF	Cga pF
6.3	0.3	300	0.5	3.2	3.0	1.6

6SQ7 Application Data

Class	Va V	Vg1 V	Ia mA	Ra Ω	S mA/V
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
The Valve Museum	6SQ7: html
oldradio.qrz.ru	6SQ7: Brans Vademecum, MK buizen handboek
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) 12SQ7GT: 12SK7.pdf (57775 bytes), 12SQ7.pdf (231119 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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