2SC3944-S 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): 185 to 330
• 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-S transistor can have a current gain of 185 to 330. The gain of the 2SC3944 will be in the range from 65 to 330, for the 2SC3944-P it will be in the range from 65 to 110, 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.Sometimes the "2S" prefix is not marked on the package - the 2SC3944-S might only be marked "C3944-S".The FMMT625 (SOT-23) and FZT696B (SOT-223) is the SMD version of the 2SC3944-S transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.You can replace the 2SC3944-S with the 2SC1913, 2SC1913-S, 2SC1913A, 2SC1913A-S, 2SC3944A, 2SC3944A-S, 2SC4381, 2SC4382, 2SD401, 2SD402, 2SD772, 2SD772A, 2SD772B, 2SD792, 2SD792A, 2SD792B, KSD401, MJE15030, MJE15030G, MJE15032, MJE15032G, MJF15030, MJF15030G, TIP150, TIP41F or TIP42F.