2SA1289-S 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): 140 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-S transistor can have a current gain of 140 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.Sometimes the "2S" prefix is not marked on the package - the 2SA1289-S might only be marked "A1289-S".The complementary NPN transistor to the 2SA1289-S is the 2SC3253-S.The NZT660 (SOT-223) is the SMD version of the 2SA1289-S transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.You can replace the 2SA1289-S with the 2SA1290, 2SA1290-S, 2SA1291, 2SA1291-S, 2SA1469, 2SA1469-S, 2SA1470, 2SA1470-S, 2SA1471, 2SA1471-S, 2SA1742, 2SA1743, 2SA1744, 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.