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ID = 6254
United States of America (USA)
Developer: RCA (RCA Victor Co. Inc.); New York (NY) 
Tube type:  High Voltage Half-Wave Mercury-Vapor Rec   Power-supply 
Identical to 8008 = CE-8008 = RK8008 = T-8008 = WL-8008 = GL8008 = ML-8008
Similar Tubes
Normally replaceable-slightly different:
  AG8008 ; ESU8008
Other base:
Multiple differences or of other kind:
First Source (s)
24.Sep.1943 : Electron Tube Registration List

Base Super Jumbo (4 pin) with bajonet (Codex=Bx) Top contact with a cap.
Was used by Radio/TV-reception etc.
Filament Vf 5 Volts / If 7.5 Ampere / Direct / Special heater – See text

High-voltage mercury-vapor rectifier.

  • 4.75 to 5.25 V filament voltage
  • 7.5 A filament average current, 8 A max
  • 30 s min heating time
  • 10 kV max PIV at Tamb 20º to 60ºC, derated to 5 kV PIV at 70ºC
  • 1.25 A average anode current, 5 A peak

Same as 872A except for the higher T18 bulb and the No. 4310 RCA 'Industrial' base.

Dimensions (WHD)
incl. pins / tip
x 217 x 58 mm / x 8.54 x 2.28 inch
Weight 225 g / 7.94 oz
Tube prices 2 Tube prices (visible for members only)
Information source Essential Characteristics, GE 1973   
Babani, International Radio Tube Encyclopaedia   p. 262 & 263
Electron Tube Registration List
Universal Vade-Mecum, Electron Valves and Semiconductor Devices

8008_so.png 8008: ARRL Handbook 1972
Anonymous 10 Collector

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8008: RCA Transmitting Tubes TT-5
Emilio Ciardiello

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