2N4401 NPN Transistor: Datasheet, Pinout, and Equivalent

The 2N4401 is a commonly used NPN transistor in the TO-92 (TO-226) package. It is designed for use as a medium power amplifier and switch requiring collector currents up to 600 mA. The PNP complementary of the 2N4401 is 2N4403.

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3D Model

• Transistor Type: NPN

• Package Type: TO-226 (TO-92)

• Max Collector Current: 600 mA

• Max Collector-Emitter Voltage: 40 V

• Max Collector-Base Voltage: 60 V

• Max Emitter-Base Voltage: 6 V

• Power Dissipation: 625 mW

• Transition Frequency: 250 MHz

• DC Current Gain (hFE): 20 - 300

• Storage & Operating temperature: -55 to +150 Centigrade

Central Semiconductor 2N4401 technical specifications, attributes, parameters and parts with similar specifications to Central Semiconductor 2N4401.

2N4401 Saturated Turn-On Switching Timer

2N4401 Saturated Turn-Off Switching Time

2N3904, 2N2222, BC547, P2N2222A, ECG123AP, BC537, BC538, BC549, BC636, BC639, 2N2369, 2N3055, 2N3906, 2SC5200, 2N551

Please check the pin configuration and parameters before replacing them in your circuit.

The 2N4401 is a widely used NPN transistor in the common TO-92 (TO-226) package. In some cases, it can be replaced by other popular transistors with the same parameters like 2N2222, 2N3904, or BC547. The 2N4401 can be used to drive loads in electronic circuits like high power relays, high power LEDs, high power transistors, etc, that are under 600mA. Besides that, it can also be used in audio preamplifier circuits and audio amplifier stages. And it can be used at the output of small audio amplifiers to increase the output to drive small 200mW to 2 W speakers. Other than that it can also be used to make Darlington pairs.

• Sensor circuits

• Audio preamplifiers

• Audio amplifier stages

• Switching loads under 500mA

• Speed control of motors

• Darlington pair

• RF circuits under 250MHz

• Inverter and rectifier circuits

Since 1974, Central Semiconductor has manufactured innovative discrete semiconductors used in electronic products worldwide. Devices currently include standard and custom small-signal transistors, bipolar power transistors, MOSFETs, diodes, rectifiers, protection devices, current limiting diodes, bridge rectifiers, thyristors, and silicon carbide devices. Central's devices are available in industry-standard surface mount and through-hole packages, bare die, TLMs (Tiny Leadless Modules™), and MDMs (Multi Discrete Modules™). Central has earned a reputation as a manufacturer of the highest quality products consistently delivered on time, and a provider of exceptional value-added services.

Download datasheets and manufacturer documentation for Central Semiconductor 2N4401.