BD953 Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 100 V
• Collector-Base Voltage, max: 100 V
• Emitter-Base Voltage, max: 5 V
• Collector Current − Continuous, max: 5 A
• Collector Dissipation: 40 W
• DC Current Gain (h_fe): 40
• Transition Frequency, min: 3 MHz
• Operating and Storage Junction Temperature Range: -65 to +150 °C
• Package: TO-220

Here is an image showing the pin diagram of this transistor.The complementary PNP transistor to the BD953 is the BD954.The BDP953 (SOT-223) is the SMD version of the BD953 transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.You can replace the BD953 with the 2N6045, 2N6045G, 2N6531, 2N6532, 2N6533, 2SC2334, 2SC2334K, 2SC2334L, 2SC2334M, 2SC2527, 2SC3834, 2SC4153, 2SD1195, 2SD1196, 2SD1355, 2SD1355-O, 2SD1355-R, 2SD1355-Y, 2SD1407, 2SD1407-O, 2SD1407-R, 2SD1407-Y, 2SD1407A, 2SD1407A-O, 2SD1407A-R, 2SD1407A-Y, 2SD1415, 2SD1415A, 2SD1829, 2SD1830, 2SD1892, 2SD1892-P, 2SD1892-Q, 2SD2059, 2SD2059-O, 2SD2059-R, 2SD2059-Y, 2SD2495, 2SD2495-O, 2SD2495-P, 2SD2495-Y, 2SD363, 2SD363-O, 2SD363-R, 2SD363-Y, 2SD525, 2SD525-O, 2SD525-R, 2SD525-Y, 2SD560, 2SD560-KB, 2SD560-LB, 2SD560-MB, 2SD633, 2SD866A, 2SD866A-P, 2SD866A-Q, 2SD866A-R, BD539C, BD539D, BD543C, BD545C, BD649, BD651, BD901, BD955, BDT63B, BDT63C, BDT65B, BDT65C, BDT85, BDT85F, BDT87, BDT87F, BDW23C, BDW42, BDW42G, BDW43, BDW63C, BDW63D, BDW73C, BDW73D, BDW93C, BDW93CF, BDX33C, BDX33CG, BDX33D, BDX53C, BDX53CG, BDX53D, BDX53E, BDX53F, KSB601, KSB601-O, KSB601-R, KSB601-Y, KSC2334, KSC2334O, KSC2334R, KSC2334Y, KSD363, KSD363-O, KSD363-R, KSD363-Y, KSD560, KSD560-O, KSD560-R, KSD560-Y, KTC2018, KTC2018-O, KTC2018-Y, KTC2028, KTC2028O, KTC2028Y, KTD2059, KTD2059O, KTD2059R, KTD2059Y, MJE15028, MJE15028G, MJE15030, MJE15030G, MJF122, MJF122G, MJF15030, MJF15030G, MJF6388, MJF6388G, TIP102, TIP102G, TIP122, TIP122G, TIP132, TIP132G, TIP142T or TTD1415B.