2SC2688 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

Here is an image showing the pin diagram of this transistor.The 2SC2688 transistor can have a current gain of 40 to 250. The gain of the 2SC2688-K will be in the range from 160 to 250, for the 2SC2688-L it will be in the range from 100 to 200, for the 2SC2688-M it will be in the range from 60 to 120, for the 2SC2688-N it will be in the range from 40 to 80.Sometimes the "2S" prefix is not marked on the package - the 2SC2688 might only be marked "C2688".The FMMTA42 (SOT-23) and PMBTA42 (SOT-23) is the SMD version of the 2SC2688 transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.You can replace the 2SC2688 with the 2N5656, 2N5656G, 2N5657, 2N5657G, 2SC2899, 2SC4212, BD128, BD129 or KSC2688.