2SC3944-P Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 150 V
• Collector-Base Voltage, max: 150 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 2SC3944-P transistor can have a current gain of 65 to 110. The gain of the 2SC3944 will be in the range from 65 to 330, for the 2SC3944-Q it will be in the range from 90 to 155, for the 2SC3944-R it will be in the range from 130 to 220, for the 2SC3944-S it will be in the range from 185 to 330.Sometimes the "2S" prefix is not marked on the package - the 2SC3944-P might only be marked "C3944-P".The FMMT625 (SOT-23) is the SMD version of the 2SC3944-P transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.You can replace the 2SC3944-P with the 2SC1448, 2SC1913, 2SC1913-P, 2SC1913A, 2SC1913A-P, 2SC2073, 2SC2073A, 2SC2275A, 2SC2275A-R, 2SC2336, 2SC2336-R, 2SC2336A, 2SC2336A-R, 2SC2336B, 2SC2336B-R, 2SC2344, 2SC2344D, 2SC3296, 2SC3944A, 2SC3944A-P, 2SC4381, 2SC4382, 2SC4883, 2SC4883A, 2SC5248, 2SC5248-D, 2SD1138, 2SD1138B, 2SD1264, 2SD1264-Q, 2SD1264A, 2SD1264A-Q, 2SD1763A, 2SD1763A-E, 2SD401, 2SD401A, 2SD401A-L, 2SD402, 2SD610, 2SD610-R, 2SD772, 2SD772A, 2SD772B, 2SD792, 2SD792A, 2SD792B, FJP5200, FJPF5200, KSC2073, KSC3296, MJE15030, MJE15030G, MJE15032, MJE15032G, MJF15030, MJF15030G, MJF47, MJF47G, TIP41F, TIP42F, TIP47, TIP47G, TIP48 or TIP48G.