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5R4 Pinout
basing pinout


5R4 Substitutes
Close or identical 5R4G, 5R4GY, CV10330, CV5181, CV717, CV8189, WT274B
Different rating or performance 5R4GYA, 5R4GYB, 5R4GYS, 5R4WGY, CV2835, CV8204

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


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


5R4 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) 5R4G: 5R4G.pdf (64365 bytes)  5R4GY: 5R4GY.pdf (105844 bytes), 5R4GY.pdf (156596 bytes), 5R4GY.pdf (161736 bytes), 5R4GY.pdf (61513 bytes)  5R4GYA: 5R4GYA.pdf (126367 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

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