M28S Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 20 V
• Collector-Base Voltage, max: 40 V
• Emitter-Base Voltage, max: 6 V
• Collector Current − Continuous, max: 1 A
• Collector Dissipation: 0.625 W
• DC Current Gain (h_fe): 300 to 1000
• Transition Frequency, min: 100 MHz
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-92

The M28S 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 M28S transistor can have a current gain of 300 to 1000. The gain of the M28S-B will be in the range from 300 to 550, for the M28S-C it will be in the range from 500 to 700, for the M28S-D it will be in the range from 650 to 1000.You can replace the M28S with the MPS650, MPS650G, MPS6601, MPS6601G, MPS6602, MPS6602G, MPSW01, MPSW01A, MPSW01AG or MPSW01G.