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ID = 31938
Tube type:  Beam Power Tube   Power/Output 
Identical to KT90
Similar Tubes
Normally replaceable-slightly different:
Other class quality (otherwise equal):
  6550 ; CV5220 ; KT88

Base Octal (Int.Octal, IO) K8A, USA 1935
Filament Vf 6.3 Volts / If 1.6 Ampere / Indirect / Parallel, (AC/DC)
Description Beam-Power-Tetrode; max. 110 W Push-Pull bei 550 V Anodenspannung, max. 160 W bei 750 V. Ersetzt 6550, 6550A und KT88. 
Dimensions (WHD)
incl. pins / tip
38 x 114 x mm / 1.50 x 4.49 x inch
Tube prices 1 Tube prices (visible for members only)
KT90: my collection
Giuseppe Antonio Tusini

KT90: orig. datasheet
Günther Stabe † 19.8.20

KT90: orig. datasheet
Günther Stabe † 19.8.20

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