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ECC81 Pinout
basing pinout

 

ECC81 Substitutes
Close or identical 12AT7, CV10662, CV8154
Different rating or performance 12AT7WA, 12AT7WC, 6060, 6201, 6679, 7492, 7728, A2900, B152, B309, B739, CC81E, CK6201, CV4024, CV455, CV9859, E2157, E81CC, ECC801, ECC801S, M8162, QA2406, QA2407, QS2406

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.

 

ECC81 Ratings
Vh Ih VaMax VhkMax PaMax IkMax
6.3 0.3 300 90 2.5 15
12.6 0.15 300 90 2.5 15

 

ECC81 Application Data
Class Va Vg1 Ia Ra S
Triode 100 -1 3 16,500 3.75
Triode 170 -1 8.5 11,000 5.9
Triode 200 -1 11.5 10,500 6.7
Triode 250 -2 10 11,000 5.5

 

ECC81 Data sheet links
Automatica 12AT7: html
Dave Cigna''s Pages (DuncanAmps mirror) 12AT7: html
David Crittle''s site (Retrovox) 12AT7: Acrobat PDF application sheet
Peter Millett 12AT7: Acrobat PDF 190K, Acrobat PDF 73K
National Valve Museum ECC81: html
oldradio.qrz.ru ECC81: MAZDA Valves & Picture Tubes Data, MK buizen handboek
Penta Laboratories ECC81: Acrobat PDF
Frank Philipse 12AT7: 093/1/12AT7.pdf  CV455: 126/b/B309.pdf  ECC81: .gif file, 010/e/ECC81.pdf, 030/e/ECC81.pdf, 082/e/ECC81.pdf
Triode Electronics 12AT7: gif1, gif2, gif3, gif4, gif5
TubeZone 12AT7: pdf
Virtual Valve Museum ECC81: HTML page
WPS ECC81: html page

 

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