2SD1263 Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 250 V
• Collector-Base Voltage, max: 350 V
• Emitter-Base Voltage, max: 5 V
• Collector Current − Continuous, max: 0.75 A
• Collector Dissipation: 35 W
• DC Current Gain (h_fe): 40 to 250
• Transition Frequency, min: 30 MHz
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-220F

Here is an image showing the pin diagram of this transistor.The 2SD1263 transistor can have a current gain of 40 to 250. The gain of the 2SD1263-P will be in the range from 120 to 250, for the 2SD1263-Q it will be in the range from 70 to 150, for the 2SD1263-R it will be in the range from 40 to 90.Sometimes the "2S" prefix is not marked on the package - the 2SD1263 might only be marked "D1263".You can replace the 2SD1263 with the 2SC2898, 2SC3310, 2SC3794, 2SC3794A, 2SC3795, 2SC3795A, 2SC3868, 2SC4242, 2SC5241, 2SD1263A, 2SD772B, 2SD792B, BUX84, BUX85, MJE13070, MJE13071, MJE16002 or MJE16004.