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ID = 25157
Tube type:  Thyratron   Text 
Identical to 5662

Base Miniatur-7-Pin-Base B7G, USA 1940
Filament Vf 6.3 Volts / If 0.15 Ampere / Indirect / Specified voltage AC/DC
Description Small thyratron designed to be used in electric blankets controllers. The tube also acts as a fuse: 2.25A nominal current between cathode terminals.
GE and Hytron known manufacturers. 
Information source - - Manufacturers Literature   
Tube Lore (I)   

5662_so.png 5662: ARRL Handbook 1972
Anonymous 10 Collector

Just Qvigstad
5662: Manufacturer's Literature
Emilio Ciardiello

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