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4HA7

Information - Help 
ID = 4435
       
Country:
United States of America (USA)
Brand: Common type USA tube/semicond.
Tube type:  Double Triode 
Identical to 4HA7

Base Dekar-12-Pin-Compactron (USA 1961)
Filament Vf 4 Volts / If 0 Ampere / Indirect / Series, AC/DC
Description Die Trioden sind nicht gleich! (Für Fernsehgeräte) Triode I: Anode: 250 V, 2,75 Wmax., 10,5mA; Gitter: -8,5V, S: 2,2mA/V; µ: 17-fach
Triode II: Anode: 250 V, 0,3 Wmax., 1,2mA; Gitter: -2V, S: 1,6mA/V; µ: 100-fach. Pin 7 und 10 intern verbunden 
Tube prices 1 Tube prices (visible for members only)
Information source Essential Characteristics, GE 1973   
 
rca_4ha7.jpg
4HA7
Anonymous 773 Collector

 
4ha7_sockel.png
4HA7: Essential characteristics
Peter Hoddow

 

from Just Qvigstad

Collection of a member from FIN

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