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6U8-A Pinout
basing pinout

 

6U8-A Substitutes
Close or identical CV9858, ECF82
Different rating or performance 6678, 6U8, CV5065

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.

 

6U8-A Ratings
Vh Ih VaMax Vg2Max VhkMax PaMax Pg2Max IkMax Notes
6.3 0.45 330 90 2.5 20 Triode section
6.3 0.45 330 330 90 3.0 0.55 20 Pentode section

 

6U8-A Application Data
Class Va Vg2 Vg1 Ia Ig2 Ra S Notes
A 125 -1.0 13.5 7.5 Triode section
A 125 110 -1.0 9.5 3.5 200,000 5.0 Pentode section

 

6U8-A Data sheet links
Peter Millett 6U8-A: Acrobat PDF 343K, Acrobat PDF 92K
oldradio.qrz.ru ECF82: html page, MAZDA Valves & Picture Tubes Data  6U8: MK buizen handboek
Frank Philipse (Pocnet mirror - Patrik Schindler) 6U8A: 6SN7GTB.pdf (333220 bytes), 6U8A.pdf (300594 bytes), 6U8A.pdf (310536 bytes), 6U8A.pdf (631341 bytes)  ECF82: ECF82.pdf (140998 bytes) (de), ECF82.pdf (435462 bytes) (cs), ECF82.pdf (795208 bytes) (de)  6678: 6678.pdf (124053 bytes), 6678.pdf (591095 bytes)  6U8: 6U8.pdf (107947 bytes) (fr), 6U8.pdf (124995 bytes), 6U8.pdf (81375 bytes)
Frank Philipse (Wildcat mirror - Jörg Jan Münter) 6U8A: 6SN7GTB.pdf (333220 bytes), 6U8A.pdf (300594 bytes), 6U8A.pdf (310536 bytes), 6U8A.pdf (631341 bytes)  ECF82: ECF82.pdf (140998 bytes) (de), ECF82.pdf (435462 bytes) (cs), ECF82.pdf (795208 bytes) (de)  6678: 6678.pdf (124053 bytes), 6678.pdf (591095 bytes)  6U8: 6U8.pdf (107947 bytes) (fr), 6U8.pdf (124995 bytes), 6U8.pdf (81375 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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