2SD1781 transistor equivalent, npn silicon transistor.
Very low VCE(sat).VCE(sat) < 0.4 V (Typ.) (IC /IB = 500mA / 50mA) Complements to 2SB1197 CLASSIFICATION OF hFE Product-Rank 2SD1781-Q Range 120 ~ 270 Marking AF.
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