2SD234O 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): 70 to 140
• 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 2SD234O transistor can have a current gain of 70 to 140. The gain of the 2SD234 will be in the range from 40 to 240, for the 2SD234R it will be in the range from 40 to 80, for the 2SD234Y it will be in the range from 120 to 240.Sometimes the "2S" prefix is not marked on the package - the 2SD234O might only be marked "D234O".The complementary PNP transistor to the 2SD234O is the 2SB434O.You can replace the 2SD234O with the 2N6290, 2N6290G, 2N6291, 2N6292, 2N6292G, 2N6293, 2N6473, 2N6487, 2N6487G, 2N6488, 2N6488G, 2SC1061, 2SC1826, 2SC1827, 2SC1985, 2SC1986, 2SC2075, 2SC2078, 2SC2233, 2SC2334, 2SC2334L, 2SC2562, 2SC2562O, 2SC3179, 2SC3239, 2SC3239-O, 2SC3252, 2SC3252-Q, 2SC3253, 2SC3253-Q, 2SC3254, 2SC3254-Q, 2SC3255, 2SC3255-Q, 2SC3258, 2SC3258-O, 2SC3299, 2SC3299-O, 2SC3308, 2SC3308-O, 2SC3345, 2SC3345-O, 2SC3346, 2SC3346-O, 2SC3540, 2SC3540-O, 2SC3709, 2SC3709-O, 2SC3709A, 2SC3709A-O, 2SC3710, 2SC3710-O, 2SC3710A, 2SC3710A-O, 2SC3746, 2SC3746-Q, 2SC3747, 2SC3747-Q, 2SC3748, 2SC3748-Q, 2SC3851, 2SC3851A, 2SC4511, 2SC4511-P, 2SC4512, 2SC4512-P, 2SC4935, 2SC4935O, 2SC789, 2SC789-O, 2SD1060-Q, 2SD1061, 2SD1061-Q, 2SD1062, 2SD1062-Q, 2SD1133, 2SD1134, 2SD1265, 2SD1265A, 2SD1266, 2SD1266-Q, 2SD1266A, 2SD1266A-Q, 2SD1267, 2SD1267-Q, 2SD1267A, 2SD1267A-Q, 2SD1268, 2SD1269, 2SD1270, 2SD1271, 2SD1274, 2SD1274A, 2SD1274B, 2SD1354, 2SD1355, 2SD1355-O, 2SD1356, 2SD1356-O, 2SD1362, 2SD1362-O, 2SD1363, 2SD1363-O, 2SD1406, 2SD1407, 2SD1407-O, 2SD1407A, 2SD1407A-O, 2SD1408, 2SD1408-O, 2SD1411, 2SD1411-O, 2SD1411A, 2SD1411A-O, 2SD1412, 2SD1412-O, 2SD1568, 2SD1588, 2SD1666, 2SD1666-Q, 2SD1667, 2SD1667-Q, 2SD1668, 2SD1668-Q, 2SD1669, 2SD1669-Q, 2SD1761, 2SD1762, 2SD1913, 2SD2058, 2SD2059, 2SD2059-O, 2SD2060, 2SD2060-O, 2SD2374, 2SD2374-Q, 2SD2374A, 2SD2374A-Q, 2SD288, 2SD288-O, 2SD313, 2SD362, 2SD362-O, 2SD389, 2SD389A, 2SD476, 2SD476A, 2SD525, 2SD525-O, 2SD526, 2SD526-O, 2SD553, 2SD553-O, 2SD568, 2SD569, 2SD613, 2SD743, 2SD743A, 2SD812, 2SD823, 2SD856, 2SD856-Q, 2SD856A, 2SD856A-Q, 2SD857, 2SD857-Q, 2SD857A, 2SD857A-Q, 2SD866, 2SD866A, 2SD880, BD203, BD241A, BD241B, BD241C, BD243A, BD243B, BD243C, BD303, BD535, BD537, BD539A, BD539B, BD539C, BD543A, BD543B, BD543C, BD545A, BD545B, BD545C, BD707, BD709, BD711, BD743A, BD743B, BD743C, BD797, BD799, BD801, BD807, BD809, BD907, BD909, BD911, BD935, BD935F, BD937, BD937F, BD939, BD939F, BD949, BD951, BD953, BDT81, BDT81F, BDT83, BDT83F, BDT85, BDT85F, BDT91, BDT91F, BDT93, BDT93F, BDT95, BDT95F, BDX77, D44H11, D44H11FP, D44H8, KSC2334, KSC2334O, KSD1406, KSD1408, KSD1408-O, KSD1588, KSD2058, KSD288, KSD288-O, KSD362, KSD362-O, KSD526, KSD526-O, KSD568, KSD569, KSD880, KTC1003, KTC2018, KTC2018-O, KTC2027, KTC2027-O, KTC2028, KTC2028O, KTD1351, KTD2058, KTD2059, KTD2059O, KTD2060, KTD2060O, NTE152 or NTE196.