1N4682UR-1/TR

Overview

The Microchip Technology 1N4682UR-1/TR is a 0.5 W surface mount Zener diode in a hermetically sealed DO-213AA package. It provides a nominal voltage of 2.7 V with a standard tolerance of ±5%. The device operates at a test current of 50 µA and features an internal metallurgical bond for high reliability. Maximum reverse leakage current is specified at 1.0 µA, with a maximum DC Zener current of 180 mA.

Feature Summary

• Hermetically sealed glass MELF-style package
• Internal metallurgical bond construction
• Surface mount equivalent to JEDEC registered series

Applications

• Voltage regulation over broad operating ranges
• ESD protection circuits
• Radiation-hardened applications

Procurement Notes

Verify the specific suffix configuration against official datasheets to confirm RoHS compliance status and tolerance grade. Confirm that the TR suffix indicates tape and reel packaging per EIA-481-1-B standards. Ensure compatibility with MIL-PRF-19500 screening requirements if applicable to the intended use case.

Selection Notes

Select this component for applications requiring low capacitance and radiation hardness. Verify thermal resistance values relative to FR4 PCB mounting conditions. Consider tighter tolerance options if the standard 5% specification does not meet circuit requirements.

Part Context

This part belongs to the 1N4678UR-1 through 1N4717UR-1 series of 0.5 W Zener regulators. It serves as the surface mount equivalent to the traditional axial leaded 1N4678 series components. The series covers a voltage range from 1.8 V to 43 V.

Replacement Considerations

Direct replacements include other manufacturers' DO-213AA Zener diodes with matching 2.7 V ratings and 0.5 W power dissipation. Verify pinout polarity and hermetic sealing requirements before substitution.