1N4690UR-1

Overview

The Microchip Technology 1N4690UR-1 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, ensuring reliability in demanding environments.

Feature Summary

• Provides precise voltage regulation with a tight ±2% tolerance on the 5.6 V Zener voltage.
• Features a rugged glass MELF (DO-213AA) package suitable for automated surface-mount assembly.
• Includes an internal metallurgical bond option for enhanced mechanical stability and reliability.

Applications

• Precision voltage reference circuits
• Over-voltage protection systems
• High-reliability aerospace and defense electronics

Procurement Notes

Verify that the specific part number includes the UR-1 suffix to confirm the surface-mount MELF package and internal metallurgical bond construction. Confirm RoHS compliance status as standard variants may not meet current environmental directives. Ensure the procurement source provides traceability documentation required for high-reliability applications.

Selection Notes

Select this component when a compact surface-mount solution is required for precision voltage regulation. The 5.6 V rating and ±2% tolerance make it suitable for sensitive analog circuits. Consider the DO-213AA footprint constraints during PCB layout design to ensure proper thermal management and solder joint integrity.

Part Context

This component belongs to the 1N4678 through 1N4717 series of Zener voltage regulators manufactured by Microchip Technology. The series offers various voltage options in both axial-leaded and surface-mount packages. The UR-1 designation specifically identifies the surface-mount variant with metallurgical bonding, distinguishing it from standard leaded versions.

Replacement Considerations

Compatible substitutes include other 5.6 V Zener diodes in the DO-213AA package with similar power ratings and tolerances. Verify pinout compatibility and thermal characteristics before substitution. Alternative manufacturers may offer equivalent performance but require validation of the metallurgical bond feature if critical for the application.