2SC4428 Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 800 V
• Collector-Base Voltage, max: 1100 V
• Emitter-Base Voltage, max: 7 V
• Collector Current − Continuous, max: 6 A
• Collector Dissipation: 55 W
• DC Current Gain (h_fe): 10 to 40
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-3PF

Here is an image showing the pin diagram of this transistor.The 2SC4428 transistor can have a current gain of 10 to 40. The gain of the 2SC4428-L will be in the range from 10 to 20, for the 2SC4428-M it will be in the range from 15 to 30, for the 2SC4428-N it will be in the range from 20 to 40.Sometimes the "2S" prefix is not marked on the package - the 2SC4428 might only be marked "C4428".You can replace the 2SC4428 with the 2SC3894, 2SC3895, 2SC3896, 2SC3897, 2SC4429, 2SC4430 or KSC5030F.