2SD1289-R Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 120 V
• Collector-Base Voltage, max: 120 V
• Emitter-Base Voltage, max: 5 V
• Collector Current − Continuous, max: 8 A
• Collector Dissipation: 80 W
• DC Current Gain (h_fe): 60 to 120
• Transition Frequency, min: 60 MHz
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-3P

Here is an image showing the pin diagram of this transistor.The 2SD1289-R transistor can have a current gain of 60 to 120. The gain of the 2SD1289 will be in the range from 60 to 320, for the 2SD1289-P it will be in the range from 160 to 320, for the 2SD1289-Q it will be in the range from 100 to 200.Sometimes the "2S" prefix is not marked on the package - the 2SD1289-R might only be marked "D1289-R".The complementary PNP transistor to the 2SD1289-R is the 2SB966-R.You can replace the 2SD1289-R with the 2SC2563, 2SC2579, 2SC2580, 2SC2581, 2SC2706, 2SC2837, 2SC3181, 2SC3181-O, 2SC3181N, 2SC3181N-O, 2SC3182, 2SC3182-O, 2SC3263, 2SC3280, 2SC3281, 2SC3284, 2SC3519, 2SC3519A, 2SC3519A-O, 2SC3519A-P, 2SC3519A-Y, 2SC3854, 2SC3855, 2SC3907, 2SC4278, 2SC4278-D, 2SC4467, 2SC4468, 2SC4652, 2SC4652-D, 2SC4689, 2SC4690, 2SC5197, 2SC5198, 2SC5199, 2SC5200, 2SC5200N, 2SC5358, 2SC5774, 2SC5775, 2SC5948, 2SC5949, 2SC6011, 2SC6011A, 2SC6011A-O, 2SC6011A-P, 2SC6011A-Y, 2SC6145, 2SD1046, 2SD1046-D, 2SD1047, 2SD1047-D, 2SD1148, 2SD1717, 2SD1717-Q, 2SD1718, 2SD1718-Q, 2SD2052, 2SD2052-Q, 2SD2053, 2SD2053-Q, 2SD2155, 2SD712, 2SD998, FJA4310, KTC5200, KTC5200A, KTC5242, KTC5242A, KTD1047, KTD1047-O, KTD1047B, KTD1047B-O, KTD718, KTD718B, KTD998, MAG6333, MJW3281A, MJW3281AG or NTE2328.