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ID = 20408
Brand: Philips; Eindhoven (tubes international!); Miniwatt
Tube type:  Half-Wave Rectifier, gasfilled   Power-supply 
Identical to DCX4/1000 = AG3B28 = 3B28
Similar Tubes
Multiple differences or of other kind:
  866A ; DCG4/1000G

Base UX-Base (4 Pins (2 thick, USA 1924, UX) Top contact with a cap.
Was used by Transmittertube (Radio)
Filament Vf 2.5 Volts / If 5 Ampere / Direct / Specified voltage AC/DC

Xenon rectifier; 10KV PIV, 250mA. Wide temperature range replacement for 866A.

Dimensions (WHD)
incl. pins / tip
51 x 155 x mm / 2.01 x 6.10 x inch
Weight 34 g / 1.20 oz
Tube prices 2 Tube prices (visible for members only)
Information source Universal Vade-Mecum, Electron Valves and Semiconductor Devices   Section 60, p. 81

dcx41000_so.png DCX4/1000: ARRL Handbook 1972
Anonymous 10 Collector

Just Qvigstad
DCX4/1000: Valvo, Elektronil-Bauelemente, 1975
Anonymous 10 Collector

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