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IS4

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ID = 30337
       
Country:
Netherlands
Brand: Thermion; Lent (Nijmegen)
Tube type:  Vacuum Pentode 
Identical to IS4
Production stop Jan.1938

Base Europe 5-Pin , B5 (Eu O, F, O5A) 1928 Top contact with a cap.
Filament Vf 4 Volts / If 1.1 Ampere / Indirect
Description Amplification factor = 1000, slope = 3 mA/V 
Information source Universal Vade-Mecum, Electron Valves and Semiconductor Devices   group 155
Radio-Expres, Netherlands   2-9-1932


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