2SD1781K transistor equivalent, silicon npn transistor.
, 2SB1197K 。 Low VCE(sat),complements the 2SB1197K。
/ Applications 。 Medium power amplifier applications.
/ Equivalent Circuit
/ Pinning
3
2 1
PIN1：Emitter
PIN .
。 Medium power amplifier applications.
/ Equivalent Circuit
/ Pinning
3
2 1
PIN1：Emitter
PIN 2：Base PIN 3：Collect.
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