2SD313 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: 30 W
• DC Current Gain (h_fe): 40 to 320
• Transition Frequency, min: 5 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 2SD313 transistor can have a current gain of 40 to 320. The gain of the 2SD313C will be in the range from 40 to 80, for the 2SD313D it will be in the range from 60 to 120, for the 2SD313E it will be in the range from 100 to 200, for the 2SD313F it will be in the range from 160 to 320.Sometimes the "2S" prefix is not marked on the package - the 2SD313 might only be marked "D313".The complementary PNP transistor to the 2SD313 is the 2SB507.You can replace the 2SD313 with the 2SC1826, 2SC1985, 2SC1986, 2SC2075, 2SC3179, 2SC3851, 2SC3851A, 2SD1274, 2SD1274A, 2SD1274B, 2SD613, 2SD823, BD203, BD241A, BD241B, BD241C, BD243A, BD243B, BD243C, BD303, BD535, BD537, BD539A, BD539B, BD539C, BD539D, BD797, BD799, BD801, BD807, BD809, BD949, BD951, BD953, BD955, BDT81, BDT81F, BDT83, BDT83F, BDT85, BDT85F, BDT87, BDT87F, BDX77, MJE15028, MJE15028G, TIP41D or TIP42D.