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ID = 5957
United States of America (USA)
Brand: Common type USA tube/semicond.
Developer: Western Electric Company Inc.; New York (NY) 
Tube type:  Double Triode   Power-supply 
Identical to 5998 = 421A_WE
Similar Tubes
Other shape (e.g. bulb type):
First Source (s)
03.Oct.1951 : Electron Tube Registration List

Base Octal (Int.Octal, IO) K8A, USA 1935
Filament Vf 6.3 Volts / If 2.4 Ampere / Indirect / Specified voltage AC/DC

Dual triode intended for use as series regulator in voltage stabilized power supply circuits. µ = 5.5

This is the RMA/EIA code for the WE 421A.

Tube prices 1 Tube prices (visible for members only)
Information source Essential Characteristics, GE 1973   
- - Manufacturers Literature   

5998_so.png 5998: ARRL Handbook 1972
Anonymous 10 Collector

Just Qvigstad
5998: Internet
Miguel Angel Trujillo-Rodriguez

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Usage in Models 1= 1951

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):1

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