Title imageTitle image




5R4-GYA Pinout
basing pinout


5R4-GYA Substitutes
Close or identical CV8204
Different rating or performance 5R4, 5R4G, 5R4GY, 5R4GYB, 5R4GYS, 5R4WGY, CV10330, CV2835, CV5181, CV717, CV8189, WT274B

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.


5R4-GYA Ratings
Vh Ih VaMax IkMax Notes
5 2.0 PIV=2800V 650 Tube drop = 67V @ 250mA DC


5R4-GYA Application Data
Class RMSin Irect Cout Rser
FW rectifier 750-0-750 250 4 250


5R4-GYA Data sheet links
Duncan''s Amp Pages 5R4GY/GYB: Acrobat PDF (1 page)  Vade Mecum s.408: Acrobat PDF (2 pages)  Various: Acrobat PDF (7 pages)
Peter Millett 5R4GY: Acrobat PDF 141K  5R4GYB: Acrobat PDF 365K
National Valve Museum 5R4GY: html
oldradio.qrz.ru 5R4: MK buizen handboek
Frank Philipse (Wildcat mirror - Jörg Jan Münter) 5R4GYA: 5R4GYA.pdf (126367 bytes)  5R4G: 5R4G.pdf (64365 bytes)  5R4GY: 5R4GY.pdf (105844 bytes), 5R4GY.pdf (156596 bytes), 5R4GY.pdf (161736 bytes), 5R4GY.pdf (61513 bytes)  5R4GYB: 5R4GYB.pdf (286979 bytes)
TubeZone 5R4: 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

All content on this page is copyright 1997-2023 Duncan Amplification. TTWWDIITWI

Version: PHP release 1.15 04-Sep-2023