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PL504 Pinout
basing pinout
Note: Pin 9 is an internal connection

 

PL504 Substitutes
Close or identical CV10955
Different rating or performance 27GB5, CV10725, PL500
Different filament voltage EL500, EL504

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.

 

PL504 Ratings
Vh Ih VaPeak
27 0.3 7,000

 

PL504 Application Data
Class Va Vg2 Ia Ig2
Line output 75 200 440 30.0

 

PL504 Data sheet links
Dave Cigna''s Pages (DuncanAmps mirror) PL504: html
Duncan''s Amp Pages PL504: Acrobat PDF (3 pages)  PL500: Acrobat PDF (8 pages)
National Valve Museum PL504: html  PL500: html2
oldradio.qrz.ru PL500: html page, MAZDA Valves & Picture Tubes Data, MK buizen handboek
Frank Philipse EL500: 010/e/EL500.pdf  PL500: .gif file, 010/p/PL500.pdf
Frank Philipse (Pocnet mirror - Patrik Schindler) PL504: PL504.pdf (275215 bytes), PL504.pdf (36661 bytes) (fr)  EL500: EL500.pdf (35312 bytes), EL500.pdf (470327 bytes)  PL500: 6GB5.pdf (411522 bytes), PL500.pdf (32250 bytes), PL500.pdf (484292 bytes)  EL504: EL504.pdf (17062 bytes), EL504.pdf (478818 bytes) (fr)
Frank Philipse (Wildcat mirror - Jörg Jan Münter) PL504: PL504.pdf (275215 bytes), PL504.pdf (36661 bytes) (fr)  27GB5: 6GB5.pdf (411522 bytes)  EL500: EL500.pdf (35312 bytes), EL500.pdf (470327 bytes)  PL500: PL500.pdf (32250 bytes), PL500.pdf (484292 bytes)  EL504: EL504.pdf (17062 bytes), EL504.pdf (478818 bytes) (fr)

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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