2SA1289 Bipolar Transistor

• Type: PNP
• Collector-Emitter Voltage, max: -60 V
• Collector-Base Voltage, max: -80 V
• Emitter-Base Voltage, max: -5 V
• Collector Current − Continuous, max: -5 A
• Collector Dissipation: 30 W
• DC Current Gain (h_fe): 70 to 280
• 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 2SA1289 transistor can have a current gain of 70 to 280. The gain of the 2SA1289 will be in the range from 70 to 280, for the 2SA1289-Q it will be in the range from 70 to 140, for the 2SA1289-R it will be in the range from 100 to 200, for the 2SA1289-S it will be in the range from 140 to 280.Sometimes the "2S" prefix is not marked on the package - the 2SA1289 might only be marked "A1289".The complementary NPN transistor to the 2SA1289 is the 2SC3253.You can replace the 2SA1289 with the 2SA1290, 2SA1291, 2SA1469, 2SA1470, 2SA1471, 2SA770, 2SA771, 2SB633, BD204, BD244A, BD244B, BD244C, BD304, BD536, BD538, BD540A, BD540B, BD540C, BD544A, BD544B, BD544C, BD546A, BD546B, BD546C, BD798, BD800, BD802, BD808, BD810, BD950, BD952, BD954, BD956, BDT82, BDT82F, BDT84, BDT84F, BDT86, BDT86F, BDT88, BDT88F, BDX78, D45H11, D45H11FP, D45H8, MJE15029 or MJE15029G.