Transistors Medium Power Transistor (32V, 0.8A) 2SD1781K Features 1) Very low VCE(sat). VCE(sat) 0.4 V (Typ.) (IC / IB = 500mA / 50mA) 2) High current capacity in compact package. 3) Complements the 2SB1197K.. External dimensions (Units: mm) Structure Epitaxial planar type NPN silicon transistor Absolute maximum ratings (Ta = 25C) (96-220-D92) 268 Transistors 2SD1781K Electrical characteristics (Ta = 25C) Packaging specifications and hFE hFE values are classified as follows : Electrical characteristic curves 269 Transistors 270 2SD1781K