1N4118UR-1/TR

Single Zener Diodes Overview

The Microchip Technology 1N4118UR-1/TR is a Zener voltage regulator diode designed for surface mount applications. It features a DO-213AA (SMB) package and provides a nominal Zener voltage of 27 V with a 5% tolerance. The device has a maximum power dissipation of 500 mW and an internal metallurgical bond, indicated by the -1 suffix. It operates within a temperature range of -65°C to +175°C junction temperature.

Single Zener Diodes Feature Summary

• Surface mount construction in DO-213AA package
• Internal metallurgical bond for enhanced reliability
• Zener voltage regulation at 27 V nominal
• Wide operating temperature capability

Single Zener Diodes Applications

• Voltage reference circuits
• Overvoltage protection
• General purpose voltage regulation

Single Zener Diodes Procurement Notes

Verify the specific suffix configuration against official datasheets to ensure the presence of the internal metallurgical bond required for your application. Confirm that the DO-213AA package dimensions match your PCB footprint. Check for RoHS compliance status if environmental regulations apply to your manufacturing process.

Single Zener Diodes Selection Notes

Select this component when a surface mount Zener diode with high thermal stability is required. The internal metallurgical bond offers superior performance compared to non-bonded types in harsh environments. Ensure the 500 mW power rating is sufficient for the expected current levels in the target circuit design.

Single Zener Diodes Part Context

This part belongs to the 1N4099UR-1 through 1N4135UR-1 series of glass surface mount Zener diodes manufactured by Microchip. These devices are surface mount equivalents of JEDEC registered axial-leaded parts. The series covers a voltage range from 1.8 V to 100 V with standard 5% tolerances.

Single Zener Diodes Replacement Considerations

Equivalent axial-leaded parts include the 1N4118 series. Surface mount alternatives without the metallurgical bond may be considered if military-grade reliability is not required.