1N4690UR-1/TR

Single Zener Diodes Overview

The Microchip Technology 1N4690UR-1/TR is a Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 5.6 V with a tight tolerance of ±2%. The device is rated for a maximum power dissipation of 0.5 W and utilizes the DO-213AA (MELF) surface-mount package. It operates within an extended temperature range from -65 °C to +175 °C. This component provides high reliability through metallurgical bonding, making it suitable for demanding electronic environments requiring stable voltage reference or protection.

Single Zener Diodes Feature Summary

• Provides precise voltage regulation with a 5.6 V nominal Zener voltage and ±2% tolerance
• Features a rugged glass body MELF package with internal metallurgical bonding for enhanced durability
• Supports operation across a wide industrial temperature range extending up to 175 °C

Single Zener Diodes Applications

• Precision voltage reference circuits in sensitive instrumentation
• Overvoltage protection for low-voltage signal lines
• Voltage clamping in high-reliability aerospace or defense electronics

Single Zener Diodes Procurement Notes

Verify the specific suffix configuration when ordering, as the UR-1 designation indicates a metallurgically bonded variant distinct from standard versions. Confirm RoHS compliance status directly with the manufacturer, as historical data suggests non-compliance for certain variants in this series. Ensure the reel quantity matches the required production volume, as tape-and-reel packaging is standard for this surface-mount form factor.

Single Zener Diodes Selection Notes

Select this component when a 5.6 V reference with tighter than standard 5% tolerance is required. The MELF package offers superior mechanical stability compared to axial leads for automated assembly. Consider the 0.5 W power rating against expected load currents to ensure thermal limits are not exceeded during continuous operation.

Single Zener Diodes Part Context

This part belongs to the 1N4678 through 1N4717 series of 0.5 W Zener diodes manufactured by Microchip Technology. The series covers a voltage range from 1.8 V to 43 V. The UR-1 suffix specifically denotes a surface-mount version with internal metallurgical bonding, aligning with military-grade reliability requirements for similar axial counterparts.

Single Zener Diodes Replacement Considerations

Direct substitutes include other 5.6 V Zener diodes in the DO-213AA package with ±2% tolerance. Verify that replacement parts support the same 175 °C maximum operating temperature and metallurgical bond construction if environmental ruggedness is critical.