1N4686UR-1

Single Zener Diodes Overview

The Microchip Technology 1N4686UR-1 is a surface-mount Zener diode designed for voltage regulation applications. It features a DO-213AA (MELF) hermetically sealed glass package, providing a robust alternative to traditional axial leads. The device operates within an extended temperature range of -65°C to +175°C and dissipates up to 500 mW of power. It offers standard 5% tolerance on the Zener voltage, ensuring reliable performance in demanding electronic circuits.

Single Zener Diodes Feature Summary

• Hermetically sealed glass MELF package for environmental protection
• Extended operating temperature range suitable for harsh conditions
• Surface mount design for automated assembly processes

Single Zener Diodes Applications

• Voltage regulation in aerospace systems
• Overvoltage protection in industrial electronics
• Reference voltage sources in precision instrumentation

Single Zener Diodes Procurement Notes

Verify the specific suffix UR-1 against official datasheets to confirm hermetic sealing requirements. Ensure compatibility with MIL-PRF-19500 standards if applicable. Confirm RoHS status as commercial versions may differ from military-grade equivalents. Validate package dimensions against PCB footprint specifications before integration.

Single Zener Diodes Selection Notes

Select this component when a hermetically sealed surface-mount Zener diode is required. The DO-213AA package facilitates high-reliability designs where leaded components are unsuitable. Consider the 500 mW power dissipation capability for thermal management. Verify that the 5% tolerance meets the circuit's voltage regulation accuracy requirements.

Single Zener Diodes Part Context

This part belongs to the 1N4678 through 1N4717 series of 0.5 W Zener voltage regulators. The UR-1 suffix denotes the surface-mount MELF variant, which serves as the equivalent to the axial-leaded DO-35 packages. This series provides a wide selection of voltages with tight tolerances and low test currents for stable operation.

Single Zener Diodes Replacement Considerations

Direct substitutes include other manufacturers' DO-213AA Zener diodes with matching voltage and power ratings. Verify pinout orientation and hermetic sealing specifications. Ensure thermal characteristics align with the original design constraints.