TIP31ATU

Single Bipolar Transistors Overview

The TIP31ATU is an NPN silicon power transistor manufactured by Fairchild Semiconductor, housed in a TO-220AB package. It features a maximum collector-emitter voltage of 100V and a continuous collector current rating of 3A. The device supports a maximum power dissipation of 40W at case temperature and operates within a junction temperature range of -65°C to +150°C. Key electrical characteristics include a minimum DC current gain (hFE) of 10 at 3A and 4V, with a transition frequency of 3MHz.

Single Bipolar Transistors Feature Summary

• High-voltage capability suitable for demanding power switching applications
• Robust thermal performance with high power dissipation capacity
• Standardized through-hole mounting for reliable integration

Single Bipolar Transistors Applications

• General-purpose power switching circuits
• Linear regulator designs
• Audio amplifier output stages

Single Bipolar Transistors Procurement Notes

Verify the manufacturer marking on the component body to confirm Fairchild Semiconductor origin. Ensure the TO-220AB package matches the required footprint. Check datasheets for specific hFE binning requirements if precise gain matching is necessary for the application.

Single Bipolar Transistors Selection Notes

Select this component when a single NPN power transistor with 100V breakdown and 3A current handling is required. Consider the thermal resistance and heat sinking needs due to the 40W dissipation rating. Verify that the TO-220AB package fits the PCB layout constraints.

Single Bipolar Transistors Part Context

This part belongs to the TIP31 series of NPN power transistors, widely used in general-purpose amplification and switching. The 'TU' suffix typically denotes the specific tape-and-reel or bulk packaging variant offered by Fairchild Semiconductor for this TO-220AB configuration.

Single Bipolar Transistors Replacement Considerations

Equivalent parts include the ON Semiconductor TIP31CTU and STMicroelectronics TIP31C. Verify pinout compatibility and ensure thermal and electrical ratings meet or exceed the original design specifications.