SMBJ5944AE3/TR13

Single Zener Diodes Overview

The SMBJ5944AE3/TR13 is a surface mount 2.0W Zener diode from the SMBJ59 family, equivalent to JEDEC registered 1N5944 with identical electrical characteristics but lower thermal resistance. It features a DO-214AA (SMB) J-bend package for high-density mounting and operates within a junction temperature range of -65°C to +150°C. The device provides a nominal Zener voltage of 75V with a tolerance of ±5% at a test current of 3.3mA. Maximum dynamic impedance is 100Ω at IZT and 1.0kΩ at IZK. It withstands a maximum reverse leakage current of 1µA at 58.5V and supports a maximum regulator current of 26.6mA.

Single Zener Diodes Feature Summary

• Ideal for high-density and low-profile mounting applications
• Moisture classification Level 1 requiring no dry pack
• Non-sensitive to ESD per MIL-STD-750 method 1020
• Withstands high surge stresses

Single Zener Diodes Applications

• Voltage regulation over broad operating current and temperature ranges
• High-density circuit board mounting
• Surge stress protection circuits

Single Zener Diodes Procurement Notes

Verify component authenticity through authorized Microchip Technology channels or certified distributors. Confirm RoHS compliance status via the e3 suffix and check for recent Product Change Notices regarding discontinuation or manufacturing changes. Ensure storage conditions align with Level 1 moisture sensitivity requirements.

Single Zener Diodes Selection Notes

Select this component when a 2.0W power rating in an SMB package is required instead of the standard 1.5W axial equivalent. Choose the 'A' suffix for ±5% voltage tolerance and the 'TR13' suffix for tape and reel packaging. Verify that the 75V breakdown voltage matches the specific circuit design requirements.

Single Zener Diodes Part Context

This part belongs to the SMBJ59 series of silicon 2.0 Watt Zener diodes manufactured by Microchip Technology. The series covers Zener voltages from 5.1V to 9.1V, though the SMBJ5944 variant specifically addresses higher voltage needs within the broader SMBJ product line context.

Single Zener Diodes Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation.