2SC3149M Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 800 V
• Collector-Base Voltage, max: 900 V
• Emitter-Base Voltage, max: 7 V
• Collector Current − Continuous, max: 1.5 A
• Collector Dissipation: 40 W
• DC Current Gain (h_fe): 20 to 40
• Transition Frequency, min: 30 MHz
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-220

Here is an image showing the pin diagram of this transistor.The 2SC3149M transistor can have a current gain of 20 to 40. The gain of the 2SC3149 will be in the range from 10 to 40, for the 2SC3149K it will be in the range from 10 to 20, for the 2SC3149L it will be in the range from 15 to 30.Sometimes the "2S" prefix is not marked on the package - the 2SC3149M might only be marked "C3149M".You can replace the 2SC3149M with the 2SC3150, 2SC3150-M, 2SC3456, 2SC3456-N, 2SC3457, 2SC3457-N, 2SC3751, 2SC3751-M, 2SC3752, 2SC3752-M, 2SC3866, 2SC5353, FJPF5027, FJPF5027-O, KSC5026, KSC5026-O, KSC5027, KSC5027-O, KSC5027F, KSC5027F-O or MJE8503.