KSC2690 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: 1.2 A
• Collector Dissipation: 20 W
• DC Current Gain (h_fe): 60 to 320
• Transition Frequency, min: 155 MHz
• 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 KSC2690 transistor can have a current gain of 60 to 320. The gain of the KSC2690-O will be in the range from 100 to 200, for the KSC2690-R it will be in the range from 60 to 120, for the KSC2690-Y it will be in the range from 160 to 320.The complementary PNP transistor to the KSC2690 is the KSA1220.The FMMT625 (SOT-23) is the SMD version of the KSC2690 transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.You can replace the KSC2690 with the 2SC2481, 2SC2690, 2SC2690A, 2SD669 or KSC2690A.