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2N1990

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ID = 36701
       
Country:
United States of America (USA)
Brand: Common type USA tube/semicond.
Developer: Texas Instruments, Dallas 
Tube type:  Transistor   Audio Frequency 
Identical to 2N1990
Similar Tubes
Other base and data slightly different:
  SS200

Base Wires
Description

NPN silicon planar transistor intended as AF driver.
French versions (2N1990N, 2N1990R, 2N1990S: COSEM) for switching applications.
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Text in other languages (may differ)
Dimensions (WHD)
incl. pins / tip
9 x 7 x 8 mm / 0.35 x 0.28 x 0.31 inch
Weight 1 g / 0.04 oz
Information source -- Collector info (Sammler)   KTT 1969/70, TTT Steidle 1981, Towers ITVL

2n1990.gif
2N1990: Funktechnik 17/65
Egon Strampe

to5_tvt_165.gif 2N1990: TVT 73
Günther Stabe † 19.8.20

Usage in Models 1= 1960?? ; 1= 1963?? ; 1= 1964 ; 2= 1965 ; 1= 1966 ; 1= 1975

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):7

Collection of

 
2n1990_redimensionner.jpg

2N1990
 

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