2SD1265-Q Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 60 V
• Collector-Base Voltage, max: 60 V
• Emitter-Base Voltage, max: 8 V
• Collector Current − Continuous, max: 4 A
• Collector Dissipation: 30 W
• DC Current Gain (h_fe): 30 to 60
• 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 2SD1265-Q transistor can have a current gain of 30 to 60. The gain of the 2SD1265 will be in the range from 30 to 160, for the 2SD1265-O it will be in the range from 80 to 160, for the 2SD1265-P it will be in the range from 50 to 100.Sometimes the "2S" prefix is not marked on the package - the 2SD1265-Q might only be marked "D1265-Q".You can replace the 2SD1265-Q with the 2N5293, 2N5294, 2N5297, 2N5298, 2N5496, 2N6098, 2N6099, 2N6100, 2N6101, 2N6122, 2N6123, 2N6130, 2N6131, 2N6292, 2N6292G, 2N6293, 2N6473, 2N6474, 2N6487, 2N6487G, 2N6488, 2N6488G, 2SC2075, 2SC2233, 2SD1265A, 2SD1265A-Q, 2SD1274, 2SD1274A, 2SD1274B, 2SD362, 2SD389, 2SD389-Q, 2SD389A, 2SD389A-Q, 2SD823, BD203, BD243A, BD243B, BD243C, BD303, BD535J, BD537J, BD707, BD709, BD711, BD743A, BD743B, BD743C, BD797, BD799, BD801, BD807, BD809, BD907, BD909, BD911, BDT41A, BDT41AF, BDT41B, BDT41BF, BDT41C, BDT41CF, BDT91, BDT91F, BDT93, BDT93F, BDT95, BDT95F, BDX77, KSD362, KSE3055T, KTC1003, MJE2801T, MJE3055T, MJE3055TG, MJE5180, MJF3055, MJF3055G, NTE196, TIP3055T, TIP41A, TIP41AG, TIP41B, TIP41BG, TIP41C, TIP41CF, TIP41CG, TIP41D or TIP42D.