2SA658A Bipolar Transistor

• Type: PNP
• Collector-Emitter Voltage, max: -50 V
• Collector-Base Voltage, max: -70 V
• Emitter-Base Voltage, max: -5 V
• Collector Current − Continuous, max: -7 A
• Collector Dissipation: 50 W
• DC Current Gain (h_fe): 30 to 300
• Transition Frequency, min: 5 MHz
• Operating and Storage Junction Temperature Range: -65 to +150 °C
• Package: TO-3

Here is an image showing the pin diagram of this transistor.Sometimes the "2S" prefix is not marked on the package - the 2SA658A might only be marked "A658A".The complementary NPN transistor to the 2SA658A is the 2SC521A.You can replace the 2SA658A with the 2SA657A, 2SA744, 2SA745, 2SA746, 2SA907, BD316 or BD318.