The 2N4401 is a general-purpose NPN bipolar junction transistor (BJT) in a TO-92 package. It is widely used for low-power switching and amplification applications, supporting up to 600mA collector current and 40V breakdown voltage.

Transistor Type: NPN Package/Case: TO-92 Maximum DC Collector Current (Ic): 600 mA Collector-Emitter Breakdown Voltage (Vceo): 40 V Collector-Base Breakdown Voltage (Vcbo): 60 V Emitter-Base Breakdown Voltage (Vebo): 5 V Power Dissipation (Pd): 625 mW Operating Temperature Range: -55°C to +150°C Configuration: Single Thermal Resistance, Junction-to-Ambient (RθJA): 200 °C/W

