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ID = 4077
Tube type:  Voltage Regulator, single   Power-supply 
Identical to 0B3A
Similar Tubes
Other shape (e.g. bulb type):
First Source (s)
07.Aug.1961 : Electron Tube Registration List

Base Octal (Int.Octal, IO) K8A, USA 1935

T9 tubular glass bulb, same electrical characteristics of 0B3.

Information source Essential Characteristics, GE 1973   
- - Manufacturers Literature   

0b3a_sockel.png 0B3A: Essential characteristics
Peter Hoddow

Just Qvigstad
0B3A: Essential characteristics
Peter Hoddow

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