BD790 Bipolar Transistor

• Type: PNP
• Collector-Emitter Voltage, max: -80 V
• Collector-Base Voltage, max: -80 V
• Emitter-Base Voltage, max: -6 V
• Collector Current − Continuous, max: -4 A
• Collector Dissipation: 15 W
• DC Current Gain (h_fe): 40 to 250
• Transition Frequency, min: 40 MHz
• Operating and Storage Junction Temperature Range: -65 to +150 °C
• Package: TO-126

Here is an image showing the pin diagram of this transistor.The complementary NPN transistor to the BD790 is the BD789.The BDP952 (SOT-223) is the SMD version of the BD790 transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.You can replace the BD790 with the BD792, MJE252 or MJE254.