Central Semiconductor Corp. Single Bipolar Transistors 2N4424 PBFREE

The 2N4424 is a silicon NPN epitaxial planar transistor in a TO-92 package, designed for general-purpose amplifier applications. It has a collector-emitter voltage rating of 40 V, a continuous collector current of 500 mA, and a power dissipation of 625 mW. The operating and storage junction temperature range is -65 °C to +150 °C, with a thermal resistance of 200 °C/W. The transistor exhibits a DC current gain (hFE) of 180 to 540 at VCE=4.5 V and IC=2.0 mA. The device is supplied in a three-lead TO-92 case with emitter, collector, and base pinout as defined. The part number 2N4424 PBFREE includes a lead-free plating suffix, which is an ordering variant supported by the series but not listed as a distinct electrical specification.