2SB434Y Bipolar Transistor

• Type: PNP
• 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 2SB434Y transistor can have a current gain of 120 to 240. The gain of the 2SB434 will be in the range from 40 to 240, for the 2SB434O it will be in the range from 70 to 140, for the 2SB434R it will be in the range from 40 to 80.Sometimes the "2S" prefix is not marked on the package - the 2SB434Y might only be marked "B434Y".The complementary NPN transistor to the 2SB434Y is the 2SD234Y.The 2SB1123 (SOT-89), 2SB1124 (SOT-89) and BDP950 (SOT-223) is the SMD version of the 2SB434Y transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.You can replace the 2SB434Y with the 2SA1012, 2SA1012Y, 2SA1262, 2SA1279, 2SA1279-Y, 2SA1288, 2SA1289, 2SA1290, 2SA1291, 2SA1293, 2SA1293-Y, 2SA1307, 2SA1307-Y, 2SA1308, 2SA1308-Y, 2SA1328, 2SA1328-Y, 2SA1329, 2SA1329-Y, 2SA1388, 2SA1388-Y, 2SA1451, 2SA1451-Y, 2SA1451A, 2SA1451A-Y, 2SA1452, 2SA1452-Y, 2SA1452A, 2SA1452A-Y, 2SA1469, 2SA1470, 2SA1471, 2SA1488, 2SA1488A, 2SA1634, 2SA1635, 2SA1742, 2SA1743, 2SA1744, 2SA1869, 2SA1869Y, 2SA1931, 2SA489, 2SA489-Y, 2SA614, 2SA614Y, 2SA768, 2SA769, 2SA770, 2SA771, 2SB1016, 2SB1016-Y, 2SB1016A, 2SB1016A-Y, 2SB1017, 2SB1017-Y, 2SB1018, 2SB1018-Y, 2SB1018A, 2SB1018A-Y, 2SB1019, 2SB1019-Y, 2SB1133, 2SB1134, 2SB1135, 2SB1136, 2SB1185, 2SB1187, 2SB1274, 2SB1367, 2SB1367-Y, 2SB1368, 2SB1368-Y, 2SB1375, 2SB1548, 2SB1548-P, 2SB1548A, 2SB1548A-P, 2SB1565, 2SB1566, 2SB507, 2SB553, 2SB553-Y, 2SB595, 2SB595-Y, 2SB596, 2SB596-Y, 2SB633, 2SB761, 2SB761-P, 2SB761A, 2SB761A-P, 2SB762, 2SB762-P, 2SB762A, 2SB762A-P, 2SB824, 2SB825, 2SB826, 2SB834, 2SB857, 2SB858, 2SB870, 2SB941, 2SB941-P, 2SB941A, 2SB941A-P, 2SB942, 2SB942-P, 2SB942A, 2SB942A-P, 2SB943, 2SB944, 2SB945, 2SB946, 2SB992, 2SB992-Y, 2SB993, 2SB993-Y, 2SB995, 2SB995-Y, 2SB996, 2SB996-Y, BD204, BD242A, BD242B, BD242C, BD244A, BD244B, BD244C, BD304, BD536, BD538, BD540A, BD540B, BD540C, BD544A, BD544B, BD544C, BD546A, BD546B, BD546C, BD798, BD800, BD802, BD808, BD810, BD936, BD936F, BD938, BD938F, BD940, BD940F, BD950, BD952, BD954, BDT82, BDT82F, BDT84, BDT84F, BDT86, BDT86F, BDX78, D44C10, D44C11, D44C12, D44C7, D44C8, D44C9, D45C10, D45C11, D45C12, D45C7, D45C8, D45C9, D45H11, D45H11FP, D45H8, KSA614, KSA614Y, KSB1017, KSB1017-Y, KSB1366, KSB596, KSB596-Y, KTA1036, KTA1038, KTA1038-Y, KTA1049, KTA1049Y, KTB1367, KTB1367Y, KTB1368, KTB1368Y, KTB988, TTA1452B or TTB1452B.