2SD1913 Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 60 V
• Collector-Base Voltage, max: 60 V
• Emitter-Base Voltage, max: 6 V
• Collector Current − Continuous, max: 3 A
• Collector Dissipation: 20 W
• DC Current Gain (h_fe): 70 to 280
• Transition Frequency, min: 100 MHz
• 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 2SD1913 transistor can have a current gain of 70 to 280. The gain of the 2SD1913Q will be in the range from 70 to 120, for the 2SD1913R it will be in the range from 100 to 200, for the 2SD1913S it will be in the range from 140 to 280.Sometimes the "2S" prefix is not marked on the package - the 2SD1913 might only be marked "D1913".The complementary PNP transistor to the 2SD1913 is the 2SB1274.You can replace the 2SD1913 with the 2SC1826, 2SC1985, 2SC1986, 2SC2075, 2SC3179, 2SC3252, 2SC3253, 2SC3254, 2SC3255, 2SC3746, 2SC3747, 2SC3748, 2SC3851, 2SC3851A, 2SD1134, 2SD1266, 2SD1266A, 2SD1274, 2SD1274A, 2SD1274B, 2SD1354, 2SD1406, 2SD1666, 2SD1761, 2SD313, 2SD613, 2SD823, 2SD880, BD203, BD241A, BD241B, BD241C, BD243A, BD243B, BD243C, BD303, BD535, BD537, BD539A, BD539B, BD539C, BD539D, BD543A, BD543B, BD543C, BD545A, BD545B, BD545C, BD797, BD799, BD801, BD807, BD809, BD949, BD951, BD953, BD955, BDT81, BDT81F, BDT83, BDT83F, BDT85, BDT85F, BDT87, BDT87F, BDX77, D44H11, D44H11FP, D44H8, KSD1406, KSD2058, KSD880, KTD1351, MJE15028, MJE15028G, TIP41D or TIP42D.