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PL5557

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ID = 33901
       
Country:
Netherlands
Brand: Philips; Eindhoven (tubes international!); Miniwatt
Developer: General Electric Co. (GE); Bridgeport CT, Syracuse NY 
Tube type:  Thyratron 
Identical to PL5557 = 5557

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

This tube is a negative control mercury vapor thyratron for use where it is desired to acuate the tube with a change in negative grid voltage. It requires relatively little grid power and is suitable for use in relay circuits where current flow is desired in the absence of grid exitation.

2500V PIV, 0.5A average. Vertical, base down mounting.

 
Weight 100 g / 3.53 oz
Information source - - Manufacturers Literature   
Universal Vade-Mecum, Electron Valves and Semiconductor Devices   Section 546, p. 1153

3l1111.png PL5557: Manufacturer's Literature
Emilio Ciardiello

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Just Qvigstad
pl5557_techdat1.png
PL5557: Miniwatt Handbuch
Peter Hoddow

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Collection of

 
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PL5557
 

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