2SC4209 Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 80 V
• Collector-Base Voltage, max: 80 V
• Emitter-Base Voltage, max: 5 V
• Collector Current − Continuous, max: 0.3 A
• Collector Dissipation: 0.2 W
• DC Current Gain (h_fe): 70 to 240
• Transition Frequency, min: 100 MHz
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: SOT-23

Here is an image showing the pin diagram of this transistor.The 2SC4209 transistor can have a current gain of 70 to 240. The gain of the 2SC4209-O will be in the range from 70 to 140, for the 2SC4209-Y it will be in the range from 120 to 240.Sometimes the "2S" prefix is not marked on the package - the 2SC4209 might only be marked "C4209".The complementary PNP transistor to the 2SC4209 is the 2SA1620.You can replace the 2SC4209 with the FMMT625, FMMTA06, KST06, KST5550, MMBT5550 or PMBT5550.