2SD389A-O Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 80 V
• Collector-Base Voltage, max: 80 V
• Emitter-Base Voltage, max: 8 V
• Collector Current − Continuous, max: 4 A
• Collector Dissipation: 40 W
• DC Current Gain (h_fe): 80 to 160
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-220

Here is an image showing the pin diagram of this transistor.The 2SD389A-O transistor can have a current gain of 80 to 160. The gain of the 2SD389A will be in the range from 30 to 160, for the 2SD389A-P it will be in the range from 50 to 100, for the 2SD389A-Q it will be in the range from 30 to 60.Sometimes the "2S" prefix is not marked on the package - the 2SD389A-O might only be marked "D389A-O".The BDP951 (SOT-223) is the SMD version of the 2SD389A-O transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.You can replace the 2SD389A-O with the 2SC1827, 2SC1986, 2SC2075, 2SC2334, 2SC2527, 2SC3258, 2SC3308, 2SC3346, 2SC3540, 2SC3710, 2SC3710A, 2SC3834, 2SC3851A, 2SC4153, 2SC4511, 2SC4512, 2SD1265A, 2SD1265A-O, 2SD1267A, 2SD1269, 2SD1270, 2SD1271, 2SD1274, 2SD1274A, 2SD1274B, 2SD1355, 2SD1356, 2SD1362, 2SD1407, 2SD1407A, 2SD1408, 2SD1411, 2SD1411A, 2SD2059, 2SD2060, 2SD363, 2SD525, 2SD526, 2SD569, 2SD613, 2SD743, 2SD743A, 2SD772, 2SD792, 2SD812, 2SD823, 2SD857A, 2SD866, 2SD866A, BD243B, BD243C, BD537, BD539B, BD539C, BD539D, BD543B, BD543C, BD545B, BD545C, BD799, BD801, BD809, BD951, BD953, BD955, BDT83, BDT83F, BDT85, BDT85F, BDT87, BDT87F, BDT93, BDT93F, BDT95, BDT95F, BDX77, D44H11, D44H11FP, KSC2334, KSD1408, KSD363, KSD526, KSD569, KTC2018, KTC2027, KTC2028, KTD2059, KTD2060, MJE15028, MJE15028G, MJE15030, MJE15030G, MJF15030, MJF15030G, NTE152, TIP41D, TIP41E, TIP41F, TIP42D, TIP42E or TIP42F.