D1991A transistor equivalent, silicon npn transistor.
0.15
0.7
4.0
0.8
Unit µA µA V V V
60 50 7 160 90 0.1 150 3.5 0.3 460
V MHz pF
FE1
Rank classification
Q 160 ~ 260 R 210 ~ 340 S 290 ~ 460
Rank hFE1
1
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