2SD712 Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 120 V
• Collector-Base Voltage, max: 120 V
• Emitter-Base Voltage, max: 5 V
• Collector Current − Continuous, max: 8 A
• Collector Dissipation: 80 W
• DC Current Gain (h_fe): 55 to 160
• Transition Frequency, min: 12 MHz
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-3P

Here is an image showing the pin diagram of this transistor.The 2SD712 transistor can have a current gain of 55 to 160. The gain of the 2SD712O will be in the range from 80 to 160, for the 2SD712R it will be in the range from 55 to 110.Sometimes the "2S" prefix is not marked on the package - the 2SD712 might only be marked "D712".The complementary PNP transistor to the 2SD712 is the 2SB688.You can replace the 2SD712 with the 2SC2563, 2SC2579, 2SC2580, 2SC2581, 2SC2706, 2SC2837, 2SC3181, 2SC3181-O, 2SC3181N, 2SC3181N-O, 2SC3182, 2SC3182-O, 2SC3280, 2SC3281, 2SC3284, 2SC3519, 2SC3519A, 2SC3519A-O, 2SC3519A-P, 2SC3519A-Y, 2SC3854, 2SC3855, 2SC3907, 2SC4467, 2SC4468, 2SC4689, 2SC4690, 2SC5197, 2SC5198, 2SC5199, 2SC5200, 2SC5200N, 2SC5358, 2SC5948, 2SC5949, 2SC6011, 2SC6011A, 2SC6011A-O, 2SC6011A-P, 2SC6011A-Y, 2SD1148, 2SD2155, 2SD998, FJA4310, KTC5200, KTC5200A, KTC5242, KTC5242A, KTD718, KTD718B, KTD998, MJW3281A, MJW3281AG or NTE2328.