2SD985-K Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 60 V
• Collector-Base Voltage, max: 150 V
• Emitter-Base Voltage, max: 8 V
• Collector Current − Continuous, max: 1.5 A
• Collector Dissipation: 10 W
• DC Current Gain (h_fe): 8000 to 30000
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-126

Here is an image showing the pin diagram of this transistor.The 2SD985-K transistor can have a current gain of 8000 to 30000. The gain of the 2SD985 will be in the range from 2000 to 30000, for the 2SD985-L it will be in the range from 4000 to 10000, for the 2SD985-M it will be in the range from 2000 to 5000.Sometimes the "2S" prefix is not marked on the package - the 2SD985-K might only be marked "D985-K".The complementary PNP transistor to the 2SD985-K is the 2SB794-K.You can replace the 2SD985-K with the 2SD1509, 2SD986, 2SD986-K, BD167, BD169, BD189, BD235, BD235G, BD237, BD237G, BD677, BD677A, BD677AG, BD677G, BD679, BD679A, BD679AG, BD679G, BD681, BD681G, BD777, BD779, KSB985, KSB985-Y, KSB986, KSB986-Y, KSE800, KSE801, KSE802, KSE803, MJE225, MJE242, MJE244, MJE270, MJE270G, MJE721, MJE722, MJE800, MJE800G, MJE801, MJE801G, MJE802, MJE802G, MJE803 or MJE803G.