2SD856 Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 60 V
• Collector-Base Voltage, max: 60 V
• Emitter-Base Voltage, max: 5 V
• Collector Current − Continuous, max: 3 A
• Collector Dissipation: 35 W
• DC Current Gain (h_fe): 40 to 250
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-220

Here is an image showing the pin diagram of this transistor.The 2SD856 transistor can have a current gain of 40 to 250. The gain of the 2SD856-P will be in the range from 120 to 250, for the 2SD856-Q it will be in the range from 70 to 150, for the 2SD856-R it will be in the range from 40 to 90.Sometimes the "2S" prefix is not marked on the package - the 2SD856 might only be marked "D856".The complementary PNP transistor to the 2SD856 is the 2SB761.You can replace the 2SD856 with the 2SC1826, 2SC1985, 2SC1986, 2SC2075, 2SC3179, 2SC3851, 2SC3851A, 2SD1267, 2SD1267A, 2SD1274, 2SD1274A, 2SD1274B, 2SD313, 2SD613, 2SD823, 2SD856A, 2SD857, 2SD857A, BD203, BD241A, BD241B, BD241C, BD243A, BD243B, BD243C, BD303, BD535, BD537, BD539A, BD539B, BD539C, BD539D, BD797, BD799, BD801, BD807, BD809, BD935, BD935F, BD937, BD937F, BD939, BD939F, BD941, BD941F, BD949, BD951, BD953, BD955, BDT81, BDT81F, BDT83, BDT83F, BDT85, BDT85F, BDT87, BDT87F, BDX77, MJE15028, MJE15028G, TIP41D or TIP42D.