BD377-16 Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 60 V
• Collector-Base Voltage, max: 75 V
• Emitter-Base Voltage, max: 5 V
• Collector Current − Continuous, max: 2 A
• Collector Dissipation: 25 W
• DC Current Gain (h_fe): 100 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 BD377-16 transistor can have a current gain of 100 to 250. The gain of the BD377 will be in the range from 40 to 375, for the BD377-10 it will be in the range from 63 to 160, for the BD377-25 it will be in the range from 150 to 375, for the BD377-6 it will be in the range from 40 to 100.The complementary PNP transistor to the BD377-16 is the BD378-16.The FMMT491 (SOT-23), FMMT491Q (SOT-23) and KTC4378 (SOT-89) is the SMD version of the BD377-16 transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.You can replace the BD377-16 with the 2SD1724, 2SD1725, 2SD794A, BD177, BD179, BD189, BD235, BD235G, BD237, BD237G, BD379, BD379-16, BD787, BD787G, BD789, BD791, BDX35, BDX36, BDX37, KSD794A, KSE181, KSE182, MJE181, MJE181G, MJE182, MJE182G, MJE225, MJE242 or MJE244.