2N5957

Overview

The Microchip Technology 2N5957 is a silicon NPN power bipolar junction transistor designed for high-current applications. It features a maximum collector current of 20 A and a collector-emitter breakdown voltage of 100 V. The device is housed in a TO-61 metal stud mount package, providing robust thermal management capabilities. With a minimum DC current gain (hFE) of 30, it ensures reliable switching performance. The component is constructed using silicon technology and supports single configuration operation within the specified electrical limits.

Feature Summary

• High current handling capability with a 20 A maximum collector current rating
• Robust voltage tolerance with a 100 V collector-emitter breakdown specification
• Durable metal stud mount packaging for efficient heat dissipation
• Reliable NPN silicon construction for stable power switching operations

Applications

• Power amplifier circuits requiring high current drive
• Industrial switching systems utilizing stud-mounted transistors
• DC power regulation modules needing robust NPN components

Procurement Notes

Verify the specific manufacturer source when ordering, as the 2N5957 has been associated with multiple suppliers including Semelab and Microchip Technology. Confirm that the received unit matches the TO-61 package style and meets the required NPN polarity specifications. Ensure compliance with any applicable environmental standards or lead content requirements stated by the specific vendor supplying this legacy part number.

Selection Notes

Select the 2N5957 when designing circuits that demand a 20 A continuous collector current and 100 V blocking voltage. The TO-61 stud mount form factor is critical for applications requiring direct chassis mounting for thermal management. Ensure the design accounts for the minimum hFE of 30 to guarantee adequate base drive current. This component is suitable for general-purpose power switching where ruggedness and high current capacity are primary requirements.

Part Context

The 2N5957 belongs to the class of silicon NPN power transistors historically used in medium-to-high power electronics. It serves as a discrete active element capable of amplifying or switching electronic signals at significant power levels. The TO-61 package represents a traditional metal can style often utilized in industrial and military-grade equipment where mechanical stability and thermal conductivity are prioritized over surface area constraints.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Users should consult official Microchip Technology or Semelab cross-reference guides for equivalent devices.