BD136 Bipolar Transistor

• Type: PNP
• Collector-Emitter Voltage, max: -45 V
• Collector-Base Voltage, max: -45 V
• Emitter-Base Voltage, max: -5 V
• Collector Current − Continuous, max: -1.5 A
• Collector Dissipation: 12.5 W
• DC Current Gain (h_fe): 40 to 250
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-126

Here is an image showing the pin diagram of this transistor.The BD136 transistor can have a current gain of 40 to 250. The gain of the BD136-10 will be in the range from 63 to 160, for the BD136-16 it will be in the range from 100 to 250, for the BD136-6 it will be in the range from 40 to 100.The complementary NPN transistor to the BD136 is the BD135.The BCP51 (SOT-223) is the SMD version of the BD136 transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.You can replace the BD136 with the BD132, BD136G, BD138, BD138G, BD140, BD140G, BD166, BD168, BD170, BD176, BD178, BD180, BD180G, BD188, BD190, BD227, BD229, BD231, BD234, BD234G, BD236, BD236G, BD238, BD238G, BD376, BD378, BD380, BD786, BD788, BD788G, BD790, MJE235, MJE252, MJE711 or MJE712.The BD136G transistor is the lead-free version of the BD136.