2SC3944A-P Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 180 V
• Collector-Base Voltage, max: 180 V
• Emitter-Base Voltage, max: 5 V
• Collector Current − Continuous, max: 1 A
• Collector Dissipation: 15 W
• DC Current Gain (h_fe): 65 to 110
• Transition Frequency, min: 200 MHz
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-220F

Here is an image showing the pin diagram of this transistor.The 2SC3944A-P transistor can have a current gain of 65 to 110. The gain of the 2SC3944A will be in the range from 65 to 330, for the 2SC3944A-Q it will be in the range from 90 to 155, for the 2SC3944A-R it will be in the range from 130 to 220, for the 2SC3944A-S it will be in the range from 185 to 330.Sometimes the "2S" prefix is not marked on the package - the 2SC3944A-P might only be marked "C3944A-P".The KST43 (SOT-23) is the SMD version of the 2SC3944A-P transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.You can replace the 2SC3944A-P with the 2SC1913A, 2SC1913A-P, 2SC2336, 2SC2336-R, 2SC2336A, 2SC2336A-R, 2SC2336B, 2SC2336B-R, 2SC4382, 2SC4883A, 2SD1264A, 2SD1264A-Q, 2SD610, 2SD610-R, 2SD772A, 2SD772B, 2SD792A, 2SD792B, FJP5200, FJPF5200, MJE15032, MJE15032G, MJF47, MJF47G, TIP47, TIP47G, TIP48, TIP48G, TIP49 or TIP49G.