2SA1187 Bipolar Transistor

• Type: PNP
• Collector-Emitter Voltage, max: -150 V
• Collector-Base Voltage, max: -150 V
• Emitter-Base Voltage, max: -5 V
• Collector Current − Continuous, max: -12 A
• Collector Dissipation: 120 W
• DC Current Gain (h_fe): 50 to 180
• Transition Frequency, min: 60 MHz
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: MT-200

Here is an image showing the pin diagram of this transistor.The 2SA1187 transistor can have a current gain of 50 to 180. The gain of the 2SA1187-O will be in the range from 50 to 100, for the 2SA1187-P it will be in the range from 70 to 140, for the 2SA1187-Y it will be in the range from 90 to 180.Sometimes the "2S" prefix is not marked on the package - the 2SA1187 might only be marked "A1187".The complementary NPN transistor to the 2SA1187 is the 2SC2838.You can replace the 2SA1187 with the 2SA1169, 2SA1215, 2SA1216, 2SA1493 or 2SA1494.