2SC4109-M Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 400 V
• Collector-Base Voltage, max: 500 V
• Emitter-Base Voltage, max: 7 V
• Collector Current − Continuous, max: 16 A
• Collector Dissipation: 140 W
• DC Current Gain (h_fe): 20 to 40
• Transition Frequency, min: 20 MHz
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-3P

Here is an image showing the pin diagram of this transistor.The 2SC4109-M transistor can have a current gain of 20 to 40. The gain of the 2SC4109 will be in the range from 15 to 50, for the 2SC4109-L it will be in the range from 15 to 30, for the 2SC4109-N it will be in the range from 30 to 50.Sometimes the "2S" prefix is not marked on the package - the 2SC4109-M might only be marked "C4109-M".You can replace the 2SC4109-M with the 2SC3988, 2SC3988-M, 2SC3989, 2SC3989-M, 2SC3990, 2SC3990-M, 2SC3991, 2SC3991-M, 2SC3993, 2SC3993-M, 2SC3994, 2SC3994-M, 2SC4110 or 2SC4110-M.