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7591 Pinout
basing pinout

 

7591 Substitutes
Close or identical 7591A

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.

 

7591 Ratings
Vh Ih VaMax Vg2Max PaMax Pg2Max
6.3 0.8 550 440 19.0 3.3

 

7591 Application Data
Class Va Vg2 Vg1 Ia Ig2 Ra S Zout Pout
A1 300 300 -10.0 60.0 8.0 29000 10.2 3000 11
AB1 450 400 -21.0 66.0 9.4 6600 45

 

7591 Data sheet links
Dave Cigna''s Pages (DuncanAmps mirror) 7591A: html
oldradio.qrz.ru 7591: MK buizen handboek
Frank Philipse (Pocnet mirror - Patrik Schindler) 7591: 7591.pdf (445475 bytes), 7591.pdf (97687 bytes)  7591A: 7551.pdf (880358 bytes), 7591A.pdf (383632 bytes)
Frank Philipse (Wildcat mirror - Jörg Jan Münter) 7591: 7591.pdf (445475 bytes), 7591.pdf (97687 bytes)  7591A: 7551.pdf (880358 bytes), 7591A.pdf (383632 bytes)
TubeZone 7591: 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

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