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Z77 Pinout
basing pinout

 
Z77 Substitutes
Close or identical CV10327, CV138, CV1955, CV2195, EF91
Different rating or performance 6064, 6AM6, 6F12, CV4014, CV8020, CV8732

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.

 
Z77 Ratings

No information available
Z77 Application Data
Class Va
V		 Vg2
V		 Vg1
V		 Ia
mA		 Ig2
mA		 Ra
Ω		 S
mA/V
Pentode 250 250 -2.0 10.0 2.5 1,000,000 7.5

 
Z77 Data sheet links
Duncan''s Amp Pages Various: Acrobat PDF (7 pages)
The Valve Museum Z77: html, html2
oldradio.qrz.ru Z77: MK buizen handboek  6F12: MAZDA Valves & Picture Tubes Data
Frank Philipse (Wildcat mirror - Jörg Jan Münter) EF91: EF91.pdf (244653 bytes), EF91.pdf (32130 bytes)  Z77: Z77.pdf (588227 bytes)  6064: 6064.pdf (61616 bytes)  6AM6: 6AM6.pdf (112556 bytes), 6AM6.pdf (115594 bytes), 6AM6.pdf (3854931 bytes)  6F12: 6F12.pdf (359833 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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