1N4689C

Overview

The Microchip Technology 1N4689C is a single silicon Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 5.1 V with a tolerance of ±2% or ±5% depending on the specific suffix variant. The device supports a maximum power dissipation of 0.5 W and operates within a temperature range of -65 °C to +175 °C. Common package options include the DO-7 through-hole configuration and hermetically sealed glass MELF (DO-213AA) formats.

Feature Summary

• Hermetically sealed construction available in glass MELF packages for harsh environments
• High thermal stability supporting extended operating temperatures up to 175 °C
• Precision voltage regulation with tight tolerance options for sensitive circuits

Applications

• Voltage reference standards in precision measurement equipment
• Overvoltage protection in aerospace and defense systems
• Clamping circuits in high-reliability industrial control modules

Procurement Notes

Verify the specific suffix code to confirm tolerance, package type, and RoHS compliance status. Confirm whether the unit requires hermetic sealing for your environmental conditions. Check manufacturer documentation for lead-free availability and specific testing requirements for military-grade variants.

Selection Notes

Select the 1N4689C when a stable 5.1 V reference is required in high-temperature or radiation-hardened environments. Choose the MELF package for automated surface-mount assembly and superior hermeticity. Opt for the DO-7 package for through-hole prototyping or lower-volume manual assembly needs.

Part Context

This component belongs to the standard 1N468x series of Zener diodes manufactured by Microchip Technology. The series provides various voltage ratings from low voltages up to higher thresholds, all sharing similar power handling capabilities and robust packaging options suitable for demanding electronic applications.

Replacement Considerations

Equivalent parts include the MV1N4689UR-1 and MQ1N4689CUR-1 from Microsemi/Microchip, which share the 5.1 V rating and MELF package but may differ in tolerance or hermetic sealing specifications.