2SD234Y Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 50 V
• Collector-Base Voltage, max: 60 V
• Emitter-Base Voltage, max: 6 V
• Collector Current − Continuous, max: 3 A
• Collector Dissipation: 25 W
• DC Current Gain (h_fe): 120 to 240
• Transition Frequency, min: 3 MHz
• 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 2SD234Y transistor can have a current gain of 120 to 240. The gain of the 2SD234 will be in the range from 40 to 240, for the 2SD234O it will be in the range from 70 to 140, for the 2SD234R it will be in the range from 40 to 80.Sometimes the "2S" prefix is not marked on the package - the 2SD234Y might only be marked "D234Y".The complementary PNP transistor to the 2SD234Y is the 2SB434Y.The 2SD1623 (SOT-89), 2SD1624 (SOT-89) and BDP949 (SOT-223) is the SMD version of the 2SD234Y transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.You can replace the 2SD234Y with the 2SC1061, 2SC1826, 2SC1827, 2SC1985, 2SC1986, 2SC2075, 2SC2334, 2SC2334K, 2SC2562, 2SC2562Y, 2SC3179, 2SC3239, 2SC3239-Y, 2SC3252, 2SC3253, 2SC3254, 2SC3255, 2SC3258, 2SC3258-Y, 2SC3299, 2SC3299-Y, 2SC3308, 2SC3308-Y, 2SC3345, 2SC3345-Y, 2SC3346, 2SC3346-Y, 2SC3540, 2SC3540-Y, 2SC3709, 2SC3709-Y, 2SC3709A, 2SC3709A-Y, 2SC3710, 2SC3710-Y, 2SC3710A, 2SC3710A-Y, 2SC3746, 2SC3747, 2SC3748, 2SC3851, 2SC3851A, 2SC4007, 2SC4008, 2SC4550, 2SC4551, 2SC4552, 2SC4881, 2SC4935, 2SC4935Y, 2SC789, 2SC789-Y, 2SD1060, 2SD1061, 2SD1062, 2SD1133, 2SD1134, 2SD1266, 2SD1266-P, 2SD1266A, 2SD1266A-P, 2SD1267, 2SD1267-P, 2SD1267A, 2SD1267A-P, 2SD1268, 2SD1269, 2SD1270, 2SD1271, 2SD1274, 2SD1274A, 2SD1274B, 2SD1354, 2SD1355, 2SD1355-Y, 2SD1356, 2SD1356-Y, 2SD1362, 2SD1362-Y, 2SD1363, 2SD1363-Y, 2SD1406, 2SD1407, 2SD1407-Y, 2SD1407A, 2SD1407A-Y, 2SD1408, 2SD1408-Y, 2SD1411, 2SD1411-Y, 2SD1411A, 2SD1411A-Y, 2SD1412, 2SD1412-Y, 2SD1666, 2SD1667, 2SD1668, 2SD1669, 2SD1761, 2SD1762, 2SD1913, 2SD2012, 2SD2059, 2SD2059-Y, 2SD2060, 2SD2060-Y, 2SD2061, 2SD2374, 2SD2374-P, 2SD2374A, 2SD2374A-P, 2SD2394, 2SD2395, 2SD288, 2SD288-Y, 2SD313, 2SD525, 2SD525-Y, 2SD526, 2SD526-Y, 2SD553, 2SD553-Y, 2SD613, 2SD823, 2SD856, 2SD856-P, 2SD856A, 2SD856A-P, 2SD857, 2SD857-P, 2SD857A, 2SD857A-P, 2SD866, 2SD866A, 2SD880, BD203, BD241A, BD241B, BD241C, BD243A, BD243B, BD243C, BD303, BD535, BD537, BD539A, BD539B, BD539C, BD543A, BD543B, BD543C, BD545A, BD545B, BD545C, BD797, BD799, BD801, BD807, BD809, BD935, BD935F, BD937, BD937F, BD939, BD939F, BD949, BD951, BD953, BDT81, BDT81F, BDT83, BDT83F, BDT85, BDT85F, BDX77, D44H11, D44H11FP, D44H8, KSC2334, KSC2334Y, KSD1406, KSD1408, KSD1408-Y, KSD2012, KSD2058, KSD288, KSD288-Y, KSD526, KSD526-Y, KSD880, KTC2016, KTC2018, KTC2018-Y, KTC2026, KTC2027, KTC2027-Y, KTC2028, KTC2028Y, KTD1351, KTD2059, KTD2059Y, KTD2060, KTD2060Y or TTC3710B.