2SD471AO 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): 70 to 140
• Transition Frequency, min: 130 MHz
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-92

The 2SD471AO 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, base, and collector leads.
Here is an image showing the pin diagram of this transistor.The 2SD471AO transistor can have a current gain of 70 to 140. The gain of the 2SD471A will be in the range from 70 to 400, for the 2SD471AG it will be in the range from 200 to 400, for the 2SD471AY it will be in the range from 120 to 240.Sometimes the "2S" prefix is not marked on the package - the 2SD471AO might only be marked "D471AO".The complementary PNP transistor to the 2SD471AO is the 2SB564AO.You can replace the 2SD471AO with the BC537, BC537-10, MPS6602, MPS6602G, MPSW01, MPSW01A, MPSW01AG, MPSW01G or ZTX451.