2SD1444A-R 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): 60 to 120
• 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-R transistor can have a current gain of 60 to 120. The gain of the 2SD1444A will be in the range from 60 to 260, for the 2SD1444A-P it will be in the range from 130 to 260, for the 2SD1444A-Q it will be in the range from 90 to 180.Sometimes the "2S" prefix is not marked on the package - the 2SD1444A-R might only be marked "D1444A-R".You can replace the 2SD1444A-R with the 2N6290, 2N6290G, 2N6291, 2N6292, 2N6292G, 2N6293, 2N6486, 2N6486G, 2N6487, 2N6487G, 2N6488, 2N6488G, 2SD1271, 2SD1271-R, 2SD1588, 2SD568, 2SD568-L, 2SD569, 2SD569-L, 2SD866, 2SD866-R, BD201, BD203, BD301, BD303, BD533, BD535, BD537, BD543, BD543A, BD543B, BD545, BD545A, BD545B, BD705, BD707, BD709, BD743, BD743A, BD743B, BD795, BD797, BD799, BD807, BD809, BD905, BD907, BD909, BDT81, BDT81F, BDT83, BDT83F, BDT91, BDT91F, BDT93, BDT93F, BDX77, D44H11, D44H11FP, D44H8, KSD1588, KSD568, KSD568-O, KSD569, KSD569-O or NTE196.