2SC4512-O Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 80 V
• Collector-Base Voltage, max: 120 V
• Emitter-Base Voltage, max: 6 V
• Collector Current − Continuous, max: 6 A
• Collector Dissipation: 50 W
• DC Current Gain (h_fe): 50 to 100
• Transition Frequency, min: 20 MHz
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-220

Here is an image showing the pin diagram of this transistor.The 2SC4512-O transistor can have a current gain of 50 to 100. The gain of the 2SC4512 will be in the range from 50 to 180, for the 2SC4512-P it will be in the range from 70 to 140, for the 2SC4512-Y it will be in the range from 90 to 180.Sometimes the "2S" prefix is not marked on the package - the 2SC4512-O might only be marked "C4512-O".The complementary PNP transistor to the 2SC4512-O is the 2SA1726-O.The BDP953 (SOT-223) is the SMD version of the 2SC4512-O transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.You can replace the 2SC4512-O with the 2N6131, 2N6488, 2N6488G, 2SC1986, 2SC2334, 2SC4511, 2SC4511-O, 2SD363, 2SD569, 2SD613, 2SD823, BD243B, BD243C, BD537, BD537K, BD709, BD711, BD743B, BD743C, BD799, BD801, BD809, BD909, BD911, BDT83, BDT83F, BDT85, BDT85F, BDT87, BDT87F, BDT93, BDT93F, BDT95, BDT95F, BDX77, KSC2334, KSD363, KSD569, MJE15028, MJE15028G, MJE15030, MJE15030G, MJE5180, MJE5181, MJE5182, MJF15030, MJF15030G, MJF3055, MJF3055G, TIP41D, TIP41E, TIP41F, TIP42D, TIP42E or TIP42F.