1N4118UR-1

Single Zener Diodes Overview

The Microchip Technology 1N4118UR-1 is a surface mount Zener voltage regulator diode designed for precision voltage regulation applications. It features a nominal Zener voltage of 27 V with a standard tolerance of ±5%. The device operates within a maximum power dissipation of 500 mW and utilizes the DO-213AA (SMB) surface mount package. It supports an extended operating junction temperature range from -65°C to +175°C, ensuring reliability in demanding environments.

Single Zener Diodes Feature Summary

• Internal metallurgical bond construction for enhanced mechanical stability
• Surface mount design compatible with automated assembly processes
• Extended high-temperature operation capability up to 175°C

Single Zener Diodes Applications

• Precision voltage reference circuits
• Over-voltage protection stages
• Voltage clamping applications

Single Zener Diodes Procurement Notes

Verify the specific suffix designation during procurement to confirm the presence of the internal metallurgical bond feature. Ensure that the selected component meets the required military or industrial qualification standards if applicable to the target system. Cross-reference the datasheet specifications against the final circuit requirements before integration.

Single Zener Diodes Selection Notes

Select this component when a robust surface mount Zener diode with a 27 V breakdown voltage is required. The choice is driven by the need for high thermal stability and reliable performance in harsh conditions. Consider the 500 mW power rating and the specific package dimensions for PCB layout constraints.

Single Zener Diodes Part Context

This part belongs to the 1N41xx series of Zener diodes manufactured by Microchip Technology. It serves as the surface mount equivalent to through-hole variants, offering similar electrical characteristics in a compact form factor. The series is widely used in general-purpose electronics requiring stable voltage regulation.

Single Zener Diodes Replacement Considerations

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