2SC4738 Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 50 V
• Collector-Base Voltage, max: 60 V
• Emitter-Base Voltage, max: 5 V
• Collector Current − Continuous, max: 0.15 A
• Collector Dissipation: 0.1 W
• DC Current Gain (h_fe): 70 to 700
• Transition Frequency, min: 80 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 2SC4738 transistor can have a current gain of 70 to 700. The gain of the 2SC4738-BL will be in the range from 350 to 700, for the 2SC4738-GR it will be in the range from 200 to 400, for the 2SC4738-O it will be in the range from 70 to 140, for the 2SC4738-Y it will be in the range from 120 to 240.Sometimes the "2S" prefix is not marked on the package - the 2SC4738 might only be marked "C4738".The complementary PNP transistor to the 2SC4738 is the 2SA1832.You can replace the 2SC4738 with the 2SC2712, 2SC3912, 2SC3913, 2SC3914, 2SC3915, FMMTA05, FMMTA06, KST05, KST06, KTC3875 or KTC3875S.