BD137-10 Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 60 V
• Collector-Base Voltage, max: 60 V
• Emitter-Base Voltage, max: 5 V
• Collector Current − Continuous, max: 1.5 A
• Collector Dissipation: 12.5 W
• DC Current Gain (h_fe): 63 to 160
• 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 BD137-10 transistor can have a current gain of 63 to 160. The gain of the BD137 will be in the range from 40 to 250, for the BD137-16 it will be in the range from 100 to 250, for the BD137-6 it will be in the range from 40 to 100.The complementary PNP transistor to the BD137-10 is the BD138-10.The 2SC3444 (SOT-89), BCP55 (SOT-223), BCP55-10 (SOT-223), BCX55 (SOT-89) and BCX55-10 (SOT-89) is the SMD version of the BD137-10 transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.You can replace the BD137-10 with the 2SD669, 2SD794A, BD137G, BD139, BD139-10, BD139G, BD167, BD169, BD177, BD177-10, BD179, BD179-10, BD179G, BD189, BD228, BD230, BD235, BD235G, BD237, BD237G, BD377, BD377-10, BD379, BD379-10, BD787, BD787G, BD789, BD791, BDX35, BDX36, BDX37, KSD794A, KSE181, KSE182, MJE181, MJE181G, MJE182, MJE182G, MJE223, MJE225, MJE240, MJE241, MJE242, MJE243, MJE243G, MJE244, MJE721 or MJE722.