2N5729

Overview

The 2N5729 is a silicon NPN power bipolar junction transistor manufactured by Microchip Technology. It is housed in a TO-5 metal can package and designed for high-power switching applications. The device features an 80V collector-emitter voltage rating and a 5A continuous collector current capacity. As a single discrete component, it utilizes a wire terminal configuration with bottom positioning. The unit is RoHS compliant and lead-free, ensuring adherence to environmental standards while providing robust performance in general-purpose electronic circuits.

Feature Summary

• High-power switching capability with substantial current handling
• Robust metal can construction for thermal stability
• Silicon-based NPN polarity for reliable operation

Applications

• General-purpose power switching circuits
• Industrial control systems requiring high current
• Power supply regulation stages

Procurement Notes

Verify the specific manufacturer source, as historical production involves Micrel which was acquired by Microchip. Confirm that the received component matches the TO-5 package specification and NPN polarity. Ensure compliance documentation aligns with current Microchip standards rather than legacy Micrel data sheets. Check terminal finish specifications as they may vary between original and current production runs.

Selection Notes

Select this component when a ruggedized, hermetically sealed transistor is required for high-current switching. The TO-5 package offers superior heat dissipation compared to plastic alternatives. Consider the 80V rating and 5A limit against circuit demands. This part is suitable for applications where long-term reliability and thermal resilience are prioritized over surface-mount convenience.

Part Context

The 2N5729 belongs to the category of single bipolar transistors within Microchip's portfolio. Originally associated with Micrel before acquisition, it remains available as a legacy power BJT. The device serves as a discrete semiconductor solution distinct from integrated circuits, focusing on raw switching performance and durability in demanding electrical environments.

Replacement Considerations

Public confirmed substitute part numbers are not provided in the available documentation. Verify pinout compatibility and thermal resistance requirements when evaluating alternative NPN power transistors in the TO-5 package.