2N4404 Bipolar Transistor

• Type: PNP
• Collector-Emitter Voltage, max: -80 V
• Collector-Base Voltage, max: -80 V
• Emitter-Base Voltage, max: -5 V
• Collector Current − Continuous, max: -1 A
• Collector Dissipation: 8.75 W
• DC Current Gain (h_fe): 40 to 120
• Transition Frequency, min: 150 MHz
• Operating and Storage Junction Temperature Range: -65 to +200 °C
• Package: TO-39

Here is an image showing the pin diagram of this transistor.The BCP53 (SOT-223), BSP32 (SOT-223) and BSR32 (SOT-89) is the SMD version of the 2N4404 transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.You can replace the 2N4404 with the 2N4236, 2N4406, 2N5322, 2N5333, 2N5679, 2N5680, 2N6190, 2N6192 or 2SA510.