KSC2688 Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 300 V
• Collector-Base Voltage, max: 300 V
• Emitter-Base Voltage, max: 5 V
• Collector Current − Continuous, max: 0.2 A
• Collector Dissipation: 10 W
• DC Current Gain (h_fe): 40 to 250
• Transition Frequency, min: 80 MHz
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-126
• Electrically Similar to the Popular 2SC2688 transistor

Here is an image showing the pin diagram of this transistor.The KSC2688 transistor can have a current gain of 40 to 250. The gain of the KSC2688-G will be in the range from 160 to 250, for the KSC2688-O it will be in the range from 60 to 120, for the KSC2688-R it will be in the range from 40 to 80, for the KSC2688-Y it will be in the range from 100 to 200.The FMMTA42 (SOT-23) and PMBTA42 (SOT-23) is the SMD version of the KSC2688 transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.You can replace the KSC2688 with the 2N5656, 2N5656G, 2N5657, 2N5657G, 2SC2688, 2SC2899, 2SC4212, BD128 or BD129.