1N4683UR-1/TR

Overview

The Microchip Technology 1N4683UR-1/TR is a 0.5 W glass surface mount Zener voltage regulator in the DO-213AA (MELF) package. It provides a nominal Zener voltage of 3.0 V with a standard tolerance of ±5%. The device operates within a junction temperature range of -65°C to +175°C and features a Zener test current of 50 µA. Maximum reverse leakage current is specified at 0.8 µA, while the maximum DC Zener current is 170 mA.

Feature Summary

• Hermetically sealed glass DO-213AA MELF surface mount package
• Internal metallurgical bond for high reliability
• Up-screening available in reference to MIL-PRF-19500

Applications

• Voltage regulation over broad operating current and temperature ranges
• Applications requiring minimal capacitance
• Radiation-hardened environments

Procurement Notes

Verify the specific suffix configuration against official documentation to confirm RoHS compliance status and tolerance grade. Ensure the ordering part number matches the required screening level and packaging format. Confirm availability through authorized channels as supply conditions may vary.

Selection Notes

Select this component for applications requiring a 3.0 V reference in a compact surface mount form factor. Consider the low test current requirement and radiation hardness characteristics when designing for specialized or harsh environments.

Part Context

This device belongs to the 1N4678UR-1 through 1N4717UR-1 series of 0.5 W Zener diodes. The series offers a voltage selection from 1.8 to 43 volts with standard ±5% tolerance, alongside optional tighter tolerances.

Replacement Considerations

Equivalent commercial versions are available without the UR-1 suffix, such as the 1N4683. Verify pinout compatibility and power dissipation ratings before substitution.