2SD227G 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): 200 to 400
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-92

The 2SD227G 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 2SD227G transistor can have a current gain of 200 to 400. The gain of the 2SD227 will be in the range from 70 to 400, for the 2SD227O it will be in the range from 70 to 140, for the 2SD227Y it will be in the range from 120 to 240.Sometimes the "2S" prefix is not marked on the package - the 2SD227G might only be marked "D227G".The complementary PNP transistor to the 2SD227G is the 2SA642G.The MMBT4124 (SOT-23) and MMST4124 (SOT-323) is the SMD version of the 2SD227G transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.The KSD227G is the TO-92 version of the 2SD227G.You can replace the 2SD227G with the 2N5172, 2SD471A, 2SD471AG, KSD227, KSD227G, KSD471A, KSD471AG, MPS3415, MPS3417, MPS650, MPS650G, MPS6532, MPS6601, MPS6601G, MPS6602, MPS6602G, MPSW01, MPSW01A, MPSW01AG, MPSW01G, NTE192, PN100 or ZTX690B.