2SC4008 Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 80 V
• Collector-Base Voltage, max: 100 V
• Emitter-Base Voltage, max: 6 V
• Collector Current − Continuous, max: 4 A
• Collector Dissipation: 30 W
• DC Current Gain (h_fe): 100 to 500
• Transition Frequency, min: 10 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 2SC4008 transistor can have a current gain of 100 to 500. The gain of the 2SC4008-E will be in the range from 100 to 200, for the 2SC4008-F it will be in the range from 160 to 320, for the 2SC4008-G it will be in the range from 250 to 500.Sometimes the "2S" prefix is not marked on the package - the 2SC4008 might only be marked "C4008".The complementary PNP transistor to the 2SC4008 is the 2SA1635.The BDP951 (SOT-223) and BDP953 (SOT-223) is the SMD version of the 2SC4008 transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.You can replace the 2SC4008 with the 2SC1986, 2SC2075, 2SC4007, 2SD1274, 2SD1274A, 2SD1274B, 2SD772, 2SD792, 2SD823, BD243B, BD243C, BD537, BD539B, BD539C, BD539D, BD543B, BD543C, BD545B, BD545C, BD799, BD801, BD809, BD951, BD953, BD955, BDT83, BDT83F, BDT85, BDT85F, BDT87, BDT87F, BDX77, D44H11, D44H11FP, MJE15028, MJE15028G, MJE15030, MJE15030G, MJF15030, MJF15030G, TIP41D, TIP41E, TIP41F, TIP42D, TIP42E or TIP42F.