Central Semiconductor Corp. Single Bipolar Transistors TIP31B PBFREE

The TIP31B is an NPN silicon power transistor in a TO-220 package, designed for power amplifier and high-speed switching applications. It has a collector-emitter voltage rating of 80 V, a continuous collector current of 3.0 A, and a power dissipation of 40 W. The device features a thermal resistance from junction to case of 3.13 °C/W and operates within a junction temperature range of -65 to +150 °C. The TO-220 case has a tab connected to the collector, with dimensions including a height of 5.85 to 6.85 mm and a base width of 14.23 to 15.87 mm. The part is available in bulk packing of 500 units per box. The 'PBFREE' suffix indicates lead-free plating, consistent with the manufacturer's marking for compliance with environmental regulations.