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PC900 Pinout
basing pinout

 

PC900 Substitutes
Close or identical 4HA5
Different filament voltage 2HA5, 3HA5, 6HA5

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.

 

PC900 Ratings
Vh Ih Cgk Cak Cga
3.9 0.3 3.3 0.08 0.35

 

PC900 Application Data
Va Vg1 Ia Ra S
135 -1.0 11.5 5,250 14.5

 

PC900 Data sheet links
Peter Millett 3HA5: Acrobat PDF 22K  6HA5: Acrobat PDF 214K
National Valve Museum PC900: html
oldradio.qrz.ru PC900: MAZDA Valves & Picture Tubes Data, MK buizen handboek
Frank Philipse PC900: .gif file, 010/p/PC900.pdf  3HA5: 135/3/3GK5.pdf  6HA5: 135/6/6HA5.pdf  6HM5: 135/6/6HM5.pdf  EC900: 010/e/EC900.pdf
Frank Philipse (Pocnet mirror - Patrik Schindler) PC900: PC900.pdf (165953 bytes), PC900.pdf (36898 bytes) (fr)  3HA5: 3GK5.pdf (119627 bytes)  3HM5: 3GS8.pdf (50751 bytes)  6HA5: 6GW8.pdf (819702 bytes), 6HA5.pdf (263500 bytes)  6HM5: 2HM5.pdf (46579 bytes), 6HM5.pdf (184115 bytes), 6HM5.pdf (259110 bytes)  EC900: EC900.pdf (14702 bytes), EC900.pdf (382995 bytes) (fr)
Frank Philipse (Wildcat mirror - Jörg Jan Münter) PC900: PC900.pdf (165953 bytes), PC900.pdf (36898 bytes) (fr)  3HA5: 3GK5.pdf (119627 bytes)  3HM5: 3GS8.pdf (50751 bytes)  6HA5: 6GW8.pdf (819702 bytes), 6HA5.pdf (263500 bytes)  6HM5: 2HM5.pdf (46579 bytes), 6HM5.pdf (184115 bytes), 6HM5.pdf (259110 bytes)  EC900: EC900.pdf (14702 bytes), EC900.pdf (382995 bytes) (fr)
Virtual Valve Museum PC900: HTML page

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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