KSD471ACY Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 30 V
• Collector-Base Voltage, max: 40 V
• Emitter-Base Voltage, max: 5 V
• Collector Current − Continuous, max: 1 A
• Collector Dissipation: 0.8 W
• DC Current Gain (h_fe): 120 to 240
• Transition Frequency, min: 130 MHz
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-92
• Electrically Similar to the Popular 2SD471ACY transistor

The KSD471ACY is manufactured in a plastic TO-92 case. When looking at the flat side with the leads pointed downward, the three leads emerging from the transistor are, from left to right, the emitter, collector, and base leads. Suffix "C" means center collector in KSD471AY.
Here is an image showing the pin diagram of this transistor.The KSD471ACY transistor can have a current gain of 120 to 240. The gain of the KSD471AC will be in the range from 120 to 400, for the KSD471ACG it will be in the range from 200 to 400.The complementary PNP transistor to the KSD471ACY is the KSB564ACY.The FMMT449 (SOT-23) is the SMD version of the KSD471ACY transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.You can replace the KSD471ACY with the 2SC1384, 2SC1384-R, 2SC2236, 2SC2328A, 2SC2655, 2SC2655Y, 2SC3205, 2SC3243, 2SC3940A, 2SC3940A-R, 2SC4408, 2SD1207, 2SD1347, 2SD1835, 2SD789, 2SD863, KSC2328A, KSD1021, KSD1021-Y, KTC1008, KTC3205, KTC3209, KTC3209Y, KTC3210 or KTD863.