2SA1788 Bipolar Transistor

• Type: PNP
• Collector-Emitter Voltage, max: -120 V
• Collector-Base Voltage, max: -120 V
• Emitter-Base Voltage, max: -5 V
• Collector Current − Continuous, max: -8 A
• Collector Dissipation: 80 W
• DC Current Gain (h_fe): 60 to 320
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-247

Here is an image showing the pin diagram of this transistor.The 2SA1788 transistor can have a current gain of 60 to 320. The gain of the 2SA1788-D will be in the range from 60 to 120, for the 2SA1788-E it will be in the range from 100 to 200, for the 2SA1788-F it will be in the range from 160 to 320.Sometimes the "2S" prefix is not marked on the package - the 2SA1788 might only be marked "A1788".The complementary NPN transistor to the 2SA1788 is the 2SC4652.You can replace the 2SA1788 with the 2SA1106, 2SA1633 or 2SB966.