2N4402 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: -0.6 A
• Collector Dissipation: 0.625 W
• DC Current Gain (h_fe): 50 to 150
• Transition Frequency, min: 150 MHz
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-92

The 2N4402 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 complementary NPN transistor to the 2N4402 is the 2N4400.The 2SA1518 (SOT-23), 2SA1519 (SOT-23), 2SA1520 (SOT-23) and 2SA1521 (SOT-23) is the SMD version of the 2N4402 transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.You can replace the 2N4402 with the 2SA708, BC527, BC528, KSA708, MPS4354, MPS4356, NTE159, ZTX551 or ZTX552.