Antique radios, Old Time Radios
3N21
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Country:
United States of America (USA)
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| Identical to |
3N21
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| Base |
Wires
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| Description |
Early PNP point-contact germanium high frequency tetrode transistor.
Announced in Electronics, August 1953 page 5, as useful in certain computer circuits. First deliveries were planned to start in the same month. Also advertised as current production device in Electronics, December 1953, page 7.
Text in other
languages (may
differ)
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| Weight |
1 g / 0.04 oz |
| Information source |
-- Original prospect or advert Electronics, Aug. 1953, Dec. 1953
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