2SD1615-GK Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 50 V
• Collector-Base Voltage, max: 60 V
• Emitter-Base Voltage, max: 6 V
• Collector Current − Continuous, max: 1 A
• Collector Dissipation: 2 W
• DC Current Gain (h_fe): 300 to 600
• Transition Frequency, min: 160 MHz
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: SOT-89

Here is an image showing the pin diagram of this transistor.The 2SD1615-GK transistor can have a current gain of 300 to 600. The gain of the 2SD1615 will be in the range from 135 to 600, for the 2SD1615-GL it will be in the range from 200 to 400, for the 2SD1615-GM it will be in the range from 135 to 270.Sometimes the "2S" prefix is not marked on the package - the 2SD1615-GK might only be marked "D1615-GK".The complementary PNP transistor to the 2SD1615-GK is the 2SB1115-YK.You can replace the 2SD1615-GK with the 2STF1550.