BD136-6 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 100
• 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 BD136-6 transistor can have a current gain of 40 to 100. The gain of the BD136 will be in the range from 40 to 250, for the BD136-10 it will be in the range from 63 to 160, for the BD136-16 it will be in the range from 100 to 250.The complementary NPN transistor to the BD136-6 is the BD135-6.The BCP51 (SOT-223) is the SMD version of the BD136-6 transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.You can replace the BD136-6 with the 2N4919, 2N4919G, 2N4920, 2N4920G, 2N5194, 2N5194G, BD132, BD136G, BD138, BD138-6, BD138G, BD140, BD140-6, BD140G, BD166, BD168, BD170, BD176, BD178, BD180, BD180G, BD188, BD190, BD227, BD229, BD231, BD234, BD234G, BD236, BD236G, BD238, BD238G, BD376, BD376-6, BD378, BD378-6, BD380, BD380-6, BD438, BD438G, BD440, BD440G, BD442, BD442G, BD786, BD788, BD788G, BD790, MJE233, MJE234, MJE235, MJE250, MJE251, MJE252, MJE711 or MJE712.