1N4706UR-1/TR

Overview

The Microchip Technology 1N4706UR-1/TR is a surface mount Zener voltage regulator in the 1N4678UR-1 through 1N4717UR-1 series. It features a hermetically sealed glass DO-213AA (MELF) package with an internal metallurgical bond for high reliability. The nominal Zener voltage is 19 V with a standard tolerance of ±5%. Key electrical parameters include a Zener test current of 50 µA, a maximum reverse leakage current of 0.05 µA at 14.4 V, and a maximum DC Zener current of 25.0 mA. Steady-state power dissipation is rated at 0.5 W.

Feature Summary

• Hermetically sealed glass DO-213AA MELF package construction
• Internal metallurgical bond between metal slugs and silicon die
• Non-sensitive to electrostatic discharge per MIL-STD-750 method 1020
• Inherently radiation hard

Applications

• Voltage regulation over broad operating current and temperature ranges
• High-reliability electronic circuits requiring hermetic sealing
• Radiation-hardened system designs

Procurement Notes

Verify the specific suffix configuration against official documentation to confirm tolerance and RoHS status. 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 target application environment.

Selection Notes

Select this component for applications requiring a 19 V reference in a compact surface mount form factor. The low test current of 50 µA supports efficient operation in low-power circuits. Consider the DO-213AA package dimensions and soldering temperature limits when designing the PCB footprint and assembly process.

Part Context

This device belongs to the 1N4678UR-1 through 1N4717UR-1 series of 0.5 W glass surface mount Zener diodes. The series offers voltage selections from 1.8 V to 43 V. The -1 suffix denotes the internal metallurgical bond option, which enhances reliability compared to standard commercial equivalents.

Replacement Considerations

Equivalent JEDEC registered axial-leaded versions are available in the 1N4678-1 through 1N4717-1 series. Surface mount alternatives within the same family include variants with tighter voltage tolerances identified by C or D suffixes.