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ID = 31905
Brand: Philips; Eindhoven (tubes international!); Miniwatt
Developer: General Electric Co. (GE); Bridgeport CT, Syracuse NY 
Tube type:  Thyratron   Power-supply 
Identical to PL5559 = 5559 = GL5559 = ST57

Base UX-Base (4 Pins (2 thick, USA 1924, UX) Top contact with a cap.
Was used by Industrial
Filament Vf 5 Volts / If 4.5 Ampere / Half indirect / Specified voltage AC/DC
Description Mercury-vapour thyratron triode, for use as relay, motor control, battery chargers, variable rectifiers and for ignitron firing. 1000V PIV, 2.5A average current. 
Text in other languages (may differ)
Dimensions (WHD)
incl. pins / tip
74 x 169 x mm / 2.91 x 6.65 x inch
Weight 125 g / 4.41 oz
Tube prices 1 Tube prices (visible for members only)
Information source - - Manufacturers Literature   Philips datasheet
PL5559: scc
Christian Schaufelberger

PL5559: Philips datasheet
Günther Stabe † 19.8.20

PL5559: Miniwatt Handbuch
Peter Hoddow

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