2SC4738-Y 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): 120 to 240
• 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-Y transistor can have a current gain of 120 to 240. The gain of the 2SC4738 will be in the range from 70 to 700, for the 2SC4738-BL it 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.Sometimes the "2S" prefix is not marked on the package - the 2SC4738-Y might only be marked "C4738-Y".The complementary PNP transistor to the 2SC4738-Y is the 2SA1832-Y.You can replace the 2SC4738-Y with the 2SC2412, 2SC2412-Q, 2SC2712, 2SC2712-Y, 2SC3325, 2SC3325-Y, 2SC3441, 2SC3912, 2SC3913, 2SC3914, 2SC3915, 2SC4209, 2SC4209-Y, 2SD602A, 2SD602A-R, FMMT491, FMMT491Q, FMMT619, FMMT620, FMMTA05, FMMTA06, KST05, KST06, KTC3875, KTC3875S, KTC3875S-Y, KTC3875Y, MMBTA05, MMBTA06, PMBTA06, SMBTA05, SMBTA06 or TMBT3904.