BD178-10 Bipolar Transistor

• Type: PNP
• Collector-Emitter Voltage, max: -60 V
• Collector-Base Voltage, max: -60 V
• Emitter-Base Voltage, max: -5 V
• Collector Current − Continuous, max: -3 A
• Collector Dissipation: 30 W
• DC Current Gain (h_fe): 63 to 160
• Transition Frequency, min: 3 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 BD178-10 transistor can have a current gain of 63 to 160. The gain of the BD178 will be in the range from 40 to 250, for the BD178-6 it will be in the range from 40 to 60.The complementary NPN transistor to the BD178-10 is the BD177-10.You can replace the BD178-10 with the 2SB744A, BD180, BD180-10, BD180G, BD190, BD788, BD788G, BD790, BD792, KSB744A, KSE171, KSE172, MJE171, MJE171G, MJE172, MJE172G, MJE233, MJE235, MJE250, MJE251, MJE252, MJE253, MJE253G or MJE254.