1N4123UR-1/TR

Single Zener Diodes Overview

The 1N4123UR-1/TR is a surface-mount Zener diode manufactured by Microchip Technology. It features a nominal Zener voltage of 39V with a power dissipation rating of 500 mW and a tolerance of ±5%. The device utilizes the DO-213AA (SMB) package and incorporates an internal metallurgical bond, indicated by the '-1' suffix. It is supplied in tape and reel packaging for automated assembly.

Single Zener Diodes Feature Summary

• Internal metallurgical bond construction for enhanced mechanical stability
• Surface mount design compatible with standard SMB packages
• Voltage regulation capability within specified tolerance bands

Single Zener Diodes Applications

• Voltage regulation circuits
• Overvoltage protection applications
• Reference voltage generation

Single Zener Diodes Procurement Notes

Verify that the specific part number includes the '/TR' suffix to confirm tape and reel packaging, as opposed to bulk packaging. Ensure the '-1' suffix is present to guarantee the internal metallurgical bond feature. Confirm RoHS compliance status if required, as some variants may not meet current environmental standards. Cross-reference the manufacturer's latest datasheet for any updates on qualification or material changes.

Single Zener Diodes Selection Notes

Select this component when a 39V Zener voltage is required in a surface-mount form factor. The internal metallurgical bond offers superior reliability compared to non-bonded equivalents. Consider the 500 mW power rating for thermal management requirements. Verify that the DO-213AA footprint matches the PCB layout constraints.

Single Zener Diodes Part Context

This component belongs to the 1N4123 series of Zener diodes, which are surface-mount equivalents of traditional axial-leaded JEDEC registered parts. The 'UR' designation typically indicates a round-end glass body construction. The '-1' suffix specifically denotes the metallurgically bonded variant, distinguishing it from standard non-bonded versions within the same voltage family.

Single Zener Diodes Replacement Considerations

Direct substitutes include the 1N4123UR (non-bonded) and 1N4123UR/TR (bulk vs reel). Other manufacturers offering equivalent 39V Zener diodes in DO-213AA packages should be verified for matching electrical characteristics and bonding technology.