2SD1275 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: 2 A
• Collector Dissipation: 35 W
• DC Current Gain (h_fe): 2000 to 10000
• Transition Frequency, min: 20 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 2SD1275 transistor can have a current gain of 2000 to 10000. The gain of the 2SD1275-P will be in the range from 4000 to 10000, for the 2SD1275-Q it will be in the range from 2000 to 5000, for the 2SD1275A it will be in the range from 2000 to 10000, for the 2SD1275A-P it will be in the range from 4000 to 10000, for the 2SD1275A-Q it will be in the range from 2000 to 5000.Sometimes the "2S" prefix is not marked on the package - the 2SD1275 might only be marked "D1275".The complementary PNP transistor to the 2SD1275 is the 2SB949.The FZT692B (SOT-223) is the SMD version of the 2SD1275 transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.You can replace the 2SD1275 with the 2N6043, 2N6043G, 2N6044, 2N6044G, 2N6045, 2N6045G, 2N6387, 2N6387G, 2N6388, 2N6388G, 2N6530, 2N6531, 2N6532, 2N6533, 2SC1985, 2SC1986, 2SC2075, 2SC2315, 2SC2316, 2SC3144, 2SC3145, 2SC3179, 2SC3852, 2SC3852A, 2SD1190, 2SD1191, 2SD1192, 2SD1194, 2SD1195, 2SD1196, 2SD1274, 2SD1274A, 2SD1274B, 2SD1276, 2SD1276A, 2SD1277, 2SD1277A, 2SD1414, 2SD1415, 2SD1415A, 2SD1825, 2SD1826, 2SD1827, 2SD1828, 2SD1829, 2SD1830, 2SD2241, 2SD560, 2SD633, 2SD634, 2SD635, 2SD823, 2SD836, 2SD836A, 2SD837, 2SD837A, BD203, BD239A, BD239B, BD239C, BD241A, BD241B, BD241C, BD243A, BD243B, BD243C, BD303, BD535, BD537, BD539A, BD539B, BD539C, BD539D, BD543A, BD543B, BD543C, BD545A, BD545B, BD545C, BD645, BD647, BD649, BD651, BD797, BD799, BD801, BD807, BD809, BD897, BD897A, BD899, BD899A, BD901, BD949, BD951, BD953, BD955, BDT61, BDT61A, BDT61B, BDT61C, BDT63, BDT63A, BDT63B, BDT63C, BDT65, BDT65A, BDT65B, BDT65C, BDT81, BDT81F, BDT83, BDT83F, BDT85, BDT85F, BDT87, BDT87F, BDW23A, BDW23B, BDW23C, BDW40, BDW41, BDW41G, BDW42, BDW42G, BDW43, BDW53A, BDW53B, BDW53C, BDW53D, BDW63A, BDW63B, BDW63C, BDW63D, BDW73A, BDW73B, BDW73C, BDW73D, BDX33A, BDX33B, BDX33BG, BDX33C, BDX33CG, BDX33D, BDX53A, BDX53B, BDX53BG, BDX53C, BDX53CG, BDX53D, BDX77, D44H11, D44H11FP, D44H8, KSB601, KSD560, MJE15028, MJE15028G, MJE800T, MJE801T, MJE802T, MJE803T, MJF122, MJF122G, TIP100, TIP100G, TIP101, TIP101G, TIP102, TIP102G, TIP110, TIP110G, TIP111, TIP111G, TIP112, TIP112G, TIP120, TIP120G, TIP121, TIP121G, TIP122, TIP122G, TIP130, TIP130G, TIP131, TIP131G, TIP132, TIP132G, TIP140T, TIP141T, TIP142T, TIP41D, TIP42D or TTD1415B.