1N4704UR-1/TR

Single Zener Diodes Overview

The Microchip Technology 1N4704UR-1/TR is a 500 mW surface mount Zener voltage regulator in the DO-213AA (MELF) package. It provides a nominal Zener voltage of 17.0 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 0.05 µA, while the maximum DC Zener current reaches 29.0 mA.

Single Zener Diodes Feature Summary

• Hermetically sealed glass MELF package with internal metallurgical bond for high reliability
• Surface mount equivalent of JEDEC registered 1N4678 through 1N4717 series
• Inherently radiation hard design compliant with MIL-STD-750 method 1020

Single Zener Diodes Applications

• Voltage regulation over broad operating current and temperature ranges
• High-reliability electronic circuits requiring radiation hardness
• Space and defense applications utilizing up-screening per MIL-PRF-19500

Single Zener Diodes Procurement Notes

Verify the specific suffix configuration against official datasheets to confirm RoHS compliance status and tolerance grade. The TR suffix indicates tape and reel packaging; ensure handling procedures align with EIA-481-1-B standards. Confirm availability of high-reliability screening options if required for mission-critical environments.

Single Zener Diodes Selection Notes

Select this component when a hermetically sealed surface mount Zener diode is required for harsh environments. The 17.0 V rating fits within the 1.8 V to 43 V selection range of the series. Consider tighter 1% or 2% tolerance variants if standard 5% precision is insufficient for the circuit design.

Single Zener Diodes Part Context

This part belongs to the 1N4678UR-1 through 1N4717UR-1 series of 0.5 W glass surface mount Zener diodes manufactured by Microchip Technology. The series offers a wide voltage selection from 1.8 V to 43 V in the DO-213AA package, serving as the surface mount counterpart to traditional axial leaded equivalents.

Single Zener Diodes Replacement Considerations

Direct replacements include other manufacturers' DO-213AA Zener diodes rated at 17 V with 500 mW power dissipation. Verify that substitute components meet the same hermetic sealing and radiation hardness requirements if applicable to the original application.