MPS4250 Bipolar Transistor

• Type: PNP
• Collector-Emitter Voltage, max: -40 V
• Collector-Base Voltage, max: -40 V
• Emitter-Base Voltage, max: -5 V
• Collector Current − Continuous, max: -0.05 A
• Collector Dissipation: 0.625 W
• DC Current Gain (h_fe): 250 to 800
• Noise Figure, max: 2 dB
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-92
• Electrically Similar to the Popular 2N4250 transistor

The MPS4250 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 KST5087 (SOT-23) and MMBT5087 (SOT-23) is the SMD version of the MPS4250 transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.You can replace the MPS4250 with the 2N5087, BC317, BC320, KSP55, KSP56, KTC9015, MPS4250G, MPS750, MPS750G, MPS751, MPS751G, MPSA55, MPSA55G, MPSA56, MPSA56G, MPSW51A, MPSW51AG, MPSW55, MPSW55G, MPSW56, MPSW56G, PN4248, S9015, SS9015, ZTX790A or ZTX792A.The MPS4250G transistor is the lead-free version of the MPS4250.