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ID = 19446
United States of America (USA)
Brand: USA - Tubes designated in the USA
Tube type:  INDICATOR, in general 
Identical to 6977 = CV5412 = DM160
Similar Tubes
Normally replaceable-slightly different:
Multiple differences or of other kind:
  KP-125 ; ИВ-15
First Source (s)
Jun.1957 : -- Original-techn. papers. Electronics

Filament Vf 1 Volts / If 0.03 Ampere / Direct
Description Bar indicator tube, specifically designed as indicator for transistorized computers. Blue-green bar lights when control grid is at zero potential. Intended to replace HV transistor and neon lamp combination as logic state indicating device.
50VDC at 0.5mA anode in on state; -3VDC on the grid is enough to cut-off plate current. 20,000 hours life. Subminiature tubular body, 4-pin flying leads base.
Amperex or other Philips related plants. 
Text in other languages (may differ)
Tube prices 1 Tube prices (visible for members only)
Information source -- Original prospect or advert   Electronics, June 1957, pg.65

6977: Valvo Spezialröhren II
Willi Ribbe
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6977_so_1.png 6977: rtt
Anonymous 10 Collector

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6977: valvo Taschenbuch 1973
Anonymous 10 Collector

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