2SD1444A-P Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 40 V
• Collector-Base Voltage, max: 50 V
• Emitter-Base Voltage, max: 5 V
• Collector Current − Continuous, max: 7 A
• Collector Dissipation: 30 W
• DC Current Gain (h_fe): 130 to 260
• Transition Frequency, min: 150 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 2SD1444A-P transistor can have a current gain of 130 to 260. The gain of the 2SD1444A will be in the range from 60 to 260, for the 2SD1444A-Q it will be in the range from 90 to 180, for the 2SD1444A-R it will be in the range from 60 to 120.Sometimes the "2S" prefix is not marked on the package - the 2SD1444A-P might only be marked "D1444A-P".The complementary PNP transistor to the 2SD1444A-P is the 2SB953A-P.You can replace the 2SD1444A-P with the 2SC3254, 2SC3255, 2SC3747, 2SC3748, 2SC4550, 2SC4551, 2SC4552, 2SD1061, 2SD1062, 2SD1271, 2SD1271-P, 2SD1445A, 2SD1445A-P, 2SD1668, 2SD1669, 2SD866, 2SD866-P, BD201, BD203, BD301, BD303, BD533, BD535, BD537, BD543, BD543A, BD543B, BD545, BD545A, BD545B, BD795, BD797, BD799, BD807, BD809, BDT81, BDT81F, BDT83, BDT83F, BDX77, D44H11, D44H11FP or D44H8.