2SD227O Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 25 V
• Collector-Base Voltage, max: 30 V
• Emitter-Base Voltage, max: 5 V
• Collector Current − Continuous, max: 0.3 A
• Collector Dissipation: 0.4 W
• DC Current Gain (h_fe): 70 to 140
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-92

The 2SD227O 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 2SD227O transistor can have a current gain of 70 to 140. The gain of the 2SD227 will be in the range from 70 to 400, for the 2SD227G it will be in the range from 200 to 400, for the 2SD227Y it will be in the range from 120 to 240.Sometimes the "2S" prefix is not marked on the package - the 2SD227O might only be marked "D227O".The complementary PNP transistor to the 2SD227O is the 2SA642O.The KSD227O is the TO-92 version of the 2SD227O.You can replace the 2SD227O with the 2N4400, 2SC1210, 2SD471A, 2SD471AO, KSD227, KSD227O, KTC9013, MPS3705, MPS6532, MPS6560, MPS6560G, MPS6601, MPS6601G, MPS6602, MPS6602G, MPSW01, MPSW01A, MPSW01AG, MPSW01G or S9013.