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ID = 37882
Brand: Siemens (& Halske, -Schuckert Werke SSW, Electrogeräte); Berlin, München
Tube type:  Transistor   Audio Frequency 
Identical to BC121
Similar Tubes
Normally replaceable-slightly different:
  BC155 ; BC156 ; BFY22 ; BFY23 ; BFY23a ; BFY24 ; TX-128
Different maximum ratings:

Base Wires
Filament Solid State
Description NPN silicon planar-epitaxial low noise miniature transistor for general purposes.

Text in other languages (may differ)
Dimensions (WHD)
incl. pins / tip
2 x 2 x 1 mm / 0.08 x 0.08 x 0.04 inch
Weight 1 g / 0.04 oz
Information source - - -   
- - -   TVT 1979/80 ECA, TTT Steidle 1981
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Siegfried Neumann

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BC121: TTT Steidle 1981
Günther Stabe † 19.8.20

BC121: Siemens Einzelhalbleiter 1972/73
Thomas Günzel

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Usage in Models 1= 1968

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):1

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