SMAJ5946E3/TR13

Single Zener Diodes Overview

The SMAJ5946E3/TR13 is a surface-mount Zener diode manufactured by Microsemi Corporation, housed in the DO-214AC (SMAJ) package. It provides voltage regulation with a nominal Zener voltage of 75V and a maximum power dissipation of 3.0W at ambient temperature. The device features a tight tolerance of ±1% for precise voltage control. It is designed for high-reliability applications requiring robust transient protection and stable reference voltages in compact electronic circuits.

Single Zener Diodes Feature Summary

• Provides precise voltage regulation with a narrow ±1% tolerance band
• Delivers 3.0W continuous power dissipation capability in a compact surface-mount form factor
• Engineered for high reliability and stability in demanding operating environments

Single Zener Diodes Applications

• Precision voltage reference circuits
• Over-voltage protection in sensitive electronics
• Clamping applications in communication equipment

Single Zener Diodes Procurement Notes

Verify the specific suffix 'TR13' indicates tape-and-reel packaging when sourcing. Confirm the 'e3' designation aligns with lead-free RoHS compliance requirements for your assembly process. Ensure the DO-214AC footprint matches your PCB design constraints before finalizing procurement.

Single Zener Diodes Selection Notes

Select this component when a 75V regulation point with high precision is required. The 3.0W rating allows for higher energy handling compared to standard 1.5W variants. Consider the thermal management capabilities of the DO-214AC package for your specific board layout and airflow conditions.

Single Zener Diodes Part Context

This part belongs to the SMAJ5913 through SMAJ5956 series of 3.0W Zener diodes. It serves as the surface-mount equivalent to the JEDEC registered 1N5946B, offering identical electrical characteristics but with enhanced power handling due to lower thermal resistance inherent to the SMAJ package structure.

Single Zener Diodes Replacement Considerations

Direct equivalents include the SMAJ5946B or SMAJ5946A depending on the required tolerance level. Verify that any substitute maintains the 3.0W power rating and DO-214AC package dimensions to ensure mechanical compatibility.