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7408 Pinout
basing pinout

 

7408 Substitutes
Different rating or performance 5871, 6AY5, 6P6C*, 6V6, 6V6G, 6V6GT, 6V6GTA, 6V6GTY, 6V6Y, 7184, CV509, CV510, CV511, OSW3106, VT107, VT227, WT2100082, WTT123

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.

 

7408 Ratings

No information available

7408 Application Data
Class Va Vg2 Vg1 Ia Ig2 Ra S Zout Pout THD Notes
A S/E 315 225 -13.0 34.0 2.2 80,000 3.75 8,500 5.5 12
A S/E 250 250 -12.5 45.0 4.5 50,000 4.1 5,000 4.5
A S/E 180 180 -8.5 29.0 3.0 50,000 3.7 5,500 2.0
AB1 P/P 285 285 -19.0 70.0 4.0 70,000 3.6 8,000 14.0 3.5 Ia and Ig2 for two tubes at zero signal
AB1 P/P 250 250 -15.0 70.0 5.0 60,000 3.75 10,000 10.0 Ia and Ig2 for two tubes at zero signal

 

7408 Data sheet links
Dave Cigna''s Pages (DuncanAmps mirror) 6V6GT: html
Duncan''s Amp Pages 6V6, 6AQ5 etc.: Acrobat PDF (2 pages)
Peter Millett 7408: Acrobat PDF 53K  6V6-GTA: Acrobat PDF 212K
National Valve Museum 6V6G: html2, html3  6V6GTY: html
oldradio.qrz.ru 7408: MK buizen handboek  6V6G: Brans Vademecum
Frank Philipse 7408: .gif file, 135/7/7408.pdf  6V6: 082/6/6V6.pdf, 121/6/6V6.pdf  6V6GT: 084/6/6V6GT.pdf, 093/6/6V6GT.pdf  6V6GTA: 135/6/6V6GTA.pdf
Frank Philipse (Pocnet mirror - Patrik Schindler) 7408: 7408.pdf (563615 bytes), 7408.pdf (68735 bytes), 7408.pdf (68812 bytes)  5871: 5871.pdf (77698 bytes)  6V6: 6V6.pdf (101315 bytes) (de), 6V6.pdf (127614 bytes) (fr), 6V6.pdf (177785 bytes), 6V6.pdf (34131 bytes), 6V6.pdf (41797 bytes), 6V6.pdf (565224 bytes)  6V6G: 6V6G.pdf (57555 bytes)  6V6GT: 6V6GT.pdf (171814 bytes) (fr), 6V6GT.pdf (585729 bytes), 6V6GT.pdf (643545 bytes)  6V6GTA: 6V6GTA.pdf (218227 bytes), 6V6GTA.pdf (225328 bytes), 6V6GTA.pdf (469981 bytes)
Frank Philipse (Wildcat mirror - Jörg Jan Münter) 7408: 7408.pdf (563615 bytes), 7408.pdf (68735 bytes), 7408.pdf (68812 bytes)  5871: 5871.pdf (77698 bytes)  6V6: 6V6.pdf (101315 bytes) (de), 6V6.pdf (127614 bytes) (fr), 6V6.pdf (177785 bytes), 6V6.pdf (34131 bytes), 6V6.pdf (41797 bytes), 6V6.pdf (565224 bytes)  6V6G: 6V6G.pdf (57555 bytes)  6V6GT: 6V6GT.pdf (171814 bytes) (fr), 6V6GT.pdf (585729 bytes), 6V6GT.pdf (643545 bytes)  6V6GTA: 6V6GTA.pdf (218227 bytes), 6V6GTA.pdf (225328 bytes), 6V6GTA.pdf (469981 bytes)
Triode Electronics 6V6: gif1, gif2, gif3, gif4, gif5
TubeZone 6V6: pdf
Virtual Valve Museum 6V6: HTML page

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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