1N4701UR-1/TR

Overview

The Microchip Technology 1N4701UR-1/TR is a 500 mW surface mount Zener voltage regulator housed in a hermetically sealed glass DO-213AA (MELF) package. It provides a nominal Zener voltage of 14 V with a standard tolerance of ±5%. The device operates within a junction and storage temperature range of -65°C to +175°C. Electrical characteristics include a Zener test current of 50 µA, a maximum reverse leakage current of 0.05 µA at 10.6 V, and a maximum DC Zener current of 35.0 mA.

Feature Summary

• Hermetically sealed glass MELF package with internal metallurgical bonding for high reliability.
• Surface mount equivalent of the JEDEC registered 1N4678 through 1N4717 series.
• Inherently radiation hard and non-sensitive to electrostatic discharge per MIL-STD-750 method 1020.

Applications

• Voltage regulation over broad operating current and temperature ranges.
• High-reliability applications requiring up-screening in reference to MIL-PRF-19500.
• Circuit protection where minimal capacitance is required.

Procurement Notes

Verify that the ordering suffix 'TR' corresponds to the tape and reel packaging option as defined in the mechanical and packaging section. Confirm RoHS compliance status, noting that specific plating options like matte-tin are available on commercial grade devices only. Ensure the required voltage tolerance matches the standard ±5% specification unless a tighter tolerance variant is explicitly ordered.

Selection Notes

Select this component when a surface mount solution is needed for the 1N4701 voltage rating. The DO-213AA package offers a direct replacement for through-hole equivalents while maintaining hermetic sealing. Consider the low Zener test current of 50 µA for low-power biasing requirements. Verify thermal management needs against the junction-to-ambient thermal resistance values provided in the datasheet.

Part Context

This part belongs to the 1N4678UR-1 through 1N4717UR-1 series of 0.5 W glass surface mount Zener diodes. The series covers a voltage selection from 1.8 V to 43 V. The manufacturer also offers higher reliability up-screening options and alternative voltage tolerances of 2% and 1% for this family of components.

Replacement Considerations

The 1N4701UR-1 serves as the surface mount equivalent for the through-hole 1N4701. Other parts in the series include 1N4700UR-1 and 1N4702UR-1 for adjacent voltage ratings.