2SA816-O Bipolar Transistor

• Type: PNP
• Collector-Emitter Voltage, max: -80 V
• Collector-Base Voltage, max: -80 V
• Emitter-Base Voltage, max: -5 V
• Collector Current − Continuous, max: -0.75 A
• Collector Dissipation: 10 W
• DC Current Gain (h_fe): 70 to 140
• Transition Frequency, min: 100 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 2SA816-O transistor can have a current gain of 70 to 140. The gain of the 2SA816 will be in the range from 70 to 240, for the 2SA816-Y it will be in the range from 120 to 240.Sometimes the "2S" prefix is not marked on the package - the 2SA816-O might only be marked "A816-O".The complementary NPN transistor to the 2SA816-O is the 2SC1626-O.The 2SA1368 (SOT-89), FMMTA56 (SOT-23), KST56 (SOT-23), KTA1662 (SOT-89) and KTA1662O (SOT-89) is the SMD version of the 2SA816-O transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.You can replace the 2SA816-O with the 2N6475, 2N6476, 2N6491, 2N6491G, 2SA1008, 2SA1010, 2SA1011, 2SA1077, 2SA1078, 2SA1293, 2SA1293-O, 2SA1304, 2SA1306, 2SA1306-O, 2SA1308, 2SA1308-O, 2SA1329, 2SA1329-O, 2SA1388, 2SA1388-O, 2SA1452, 2SA1452-O, 2SA1452A, 2SA1452A-O, 2SA1488A, 2SA1634, 2SA1635, 2SA1667, 2SA1725, 2SA1725-P, 2SA1726, 2SA1726-P, 2SA1859, 2SA1964, 2SA740, 2SA769, 2SA771, 2SA814, 2SA814-O, 2SA815, 2SA815-O, 2SA913, 2SA940, 2SA940A, 2SA968, 2SA968O, 2SA985, 2SA985A, 2SB1016, 2SB1016-O, 2SB1016A, 2SB1016A-O, 2SB1017, 2SB1017-O, 2SB1018, 2SB1018-O, 2SB1018A, 2SB1018A-O, 2SB1085, 2SB1085A, 2SB1090, 2SB1186A, 2SB1367, 2SB1367-O, 2SB1368, 2SB1368-O, 2SB1548A, 2SB1548A-Q, 2SB546, 2SB546-O, 2SB546A, 2SB547, 2SB595, 2SB595-O, 2SB596, 2SB596-O, 2SB633, 2SB703, 2SB703A, 2SB708, 2SB747, 2SB761A, 2SB761A-Q, 2SB762A, 2SB762A-Q, 2SB861, 2SB870, 2SB940, 2SB940-Q, 2SB941A, 2SB941A-Q, 2SB942A, 2SB942A-Q, 2SB945, 2SB946, 2SB992, 2SB992-O, 2SB995, 2SB995-O, 2SB996, 2SB996-O, BD240B, BD240C, BD242B, BD242C, BD244B, BD244C, BD538, BD540B, BD540C, BD544B, BD544C, BD546B, BD546C, BD710, BD712, BD744B, BD744C, BD800, BD802, BD810, BD910, BD912, BD938, BD938F, BD940, BD940F, BD942, BD942F, BD952, BD954, BD956, BDT30B, BDT30C, BDT84, BDT84F, BDT86, BDT86F, BDT88, BDT88F, BDT94, BDT94F, BDT96, BDT96F, BDX78, D44C10, D44C11, D44C12, D45C10, D45C11, D45C12, D45H11, D45H11FP, KSA1010, KSA1304, KSA940, KSB1017, KSB1017-O, KSB546, KSB546-O, KSB596, KSB596-O, KSB708, KTA1038, KTA1038-O, KTA1049, KTA1049O, KTA1659, KTA1659O, KTA968, KTA968O, KTB1367, KTB1367O, KTB1368, KTB1368O, MJE15029, MJE15029G, MJE15031, MJE15031G, MJF15031, MJF15031G, NTE153 or NTE292.