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2D21

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ID = 4224
       
Country:
Worldwide
Brand:
Developer: RCA (RCA Victor Co. Inc.); New York (NY) 
Tube type:  Thyratron 
Identical to 2D21 = EN91 = ASG5121 = ST21_Thyratron = PL2D21 = 21TE31 = Ste1300/01/05 = TXM100 = PL21
Similar Tubes
Other class quality (otherwise equal):
  2D21W ; 5727 ; CV4018 ; CV797 ; PL5727
First Source (s)
29.Apr.1944 : Electron Tube Registration List 378
Predecessor Tubes 2051  

Base Miniatur-7-Pin-Base B7G, USA 1940 (Codex=Zk)
Was used by Industrial
Filament Vf 6.3 Volts / If 0.6 Ampere / Indirect / Specified voltage AC/DC
Description

Va <1350 pk inverse, <400 rms. Ia <0.5 peak. 0.1 average. Requires heater warm-up time >10s.

 
Text in other languages (may differ)
Dimensions (WHD)
incl. pins / tip
18 x 52 x mm / 0.71 x 2.05 x inch
Weight 8 g / 0.28 oz
Tube prices 3 Tube prices (visible for members only)
Information source Essential Characteristics, GE 1973   
Taschenbuch zum Röhren-Codex 1948/49   
- - Manufacturers Literature

2d21.png
2D21: HP Archiv
Heinz Höger

2d21_so.png 2D21: ARRL Handbook 1972
Anonymous 10 Collector

More ...

Just Qvigstad
2d21_spec.png
2D21: Telefunken Taschenbuch 1971
Anonymous 15 Collector

More ...
Usage in Models 1= 1943?? ; 1= 1945?? ; 1= 1955?? ; 10= 1955 ; 1= 1957? ; 1= 1958?? ; 1= 1958 ; 2= 1959 ; 2= 1961? ; 1= 1965?? ; 1= 1967 ; 2= 1970??

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):24


Collection of

 
2d21~~4.jpg

2D21
 

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