SMAJ5931BE3/TR13

Single Zener Diodes Overview

The SMAJ5931BE3/TR13 is a bidirectional transient voltage suppression (TVS) diode manufactured by Microchip Technology. It features a standoff voltage of 48V and a maximum clamping voltage of 78.2V at a peak pulse current of 25.6A. The device is rated for a peak pulse power dissipation of 400W according to the IEC 61000-4-5 standard. It utilizes an SMA (DO-214AC) surface-mount package and operates within a temperature range of -55°C to +150°C junction temperature.

Single Zener Diodes Feature Summary

• Bidirectional configuration suitable for protecting AC signal lines or differential data buses from transient overvoltage events.
• High energy absorption capability with a 400W peak pulse power rating for robust circuit protection.
• Low profile surface-mount design in an SMA package for efficient PCB space utilization.

Single Zener Diodes Applications

• Protection of general-purpose I/O ports in electronic equipment.
• Surge protection for communication interfaces such as RS-485 or CAN bus.
• Guarding sensitive input pins on microcontrollers and logic circuits.

Single Zener Diodes Procurement Notes

Verify the specific datasheet revision and electrical tolerances against the manufacturer's official documentation before integration. Confirm that the SMA (DO-214AC) footprint matches your PCB layout requirements. Ensure the bidirectional characteristic aligns with your circuit's polarity needs, as unidirectional alternatives exist within the same product family.

Single Zener Diodes Selection Notes

Select this component when bidirectional surge protection is required for low-voltage AC or bipolar signals. The 48V standoff voltage makes it appropriate for systems operating near this threshold. Consider the 400W power rating relative to expected surge profiles and ensure thermal management supports the specified junction temperature limits during fault conditions.

Single Zener Diodes Part Context

This part belongs to Microchip's SMAJ series of TVS diodes, designed for surface-mount applications requiring compact footprints. The 'E3' suffix indicates lead-free compliance, while '/TR13' specifies the reel packaging format. This series provides cost-effective protection solutions for consumer electronics and industrial control systems.

Single Zener Diodes Replacement Considerations

Direct replacements include other SMAJ series bidirectional TVS diodes with matching standoff voltages, such as SMAJ48CA or equivalent parts from other manufacturers offering identical DO-214AC packages and 400W ratings. Verify pinout compatibility and clamping voltage specifications to ensure circuit integrity.