1N4707UR-1/TR

Overview

The Microchip Technology 1N4707UR-1/TR is a surface mount Zener diode in the 1N4678UR-1 through 1N4717UR-1 series. It provides a nominal Zener voltage of 20V with a standard tolerance of ±5%. The device operates within a steady-state power dissipation of 0.5W and features a low test current of 50µA. It utilizes a hermetically sealed glass DO-213AA (MELF) package with an internal metallurgical bond for high reliability. The component supports a junction temperature range from -65°C to +175°C.

Feature Summary

• Hermetically sealed glass DO-213AA MELF surface mount package
• Internal metallurgical bond between metal slugs and silicon die
• Low Zener test current of 50µA for precise regulation
• Radiation hard construction

Applications

• Voltage regulation over broad operating current and temperature ranges
• High-reliability electronic circuits requiring ESD robustness
• Space or aerospace applications utilizing radiation-hardened components

Procurement Notes

Verify the specific suffix configuration against official datasheets, as ordering codes determine tolerance levels and RoHS compliance status. Confirm that the TR suffix indicates tape and reel packaging per EIA-481-1-B standards. Ensure compatibility with MIL-STD-750 soldering methods if high-reliability screening is required for the target application environment.

Selection Notes

Select this component when a 20V reference is needed in a compact surface mount form factor. The 50µA test current makes it suitable for low-power designs compared to higher-current alternatives. Consider the DO-213AA footprint constraints and verify thermal resistance requirements for FR4 PCB mounting. Higher precision options are available via different part number suffixes if tighter tolerances are necessary.

Part Context

This device belongs to the 1N4678UR-1 through 1N4717UR-1 series of 0.5-watt Zener voltage regulators. These parts serve as surface mount equivalents to the JEDEC registered axial leaded 1N4678 through 1N4717 series. The series covers a voltage selection from 1.8 to 43 volts, offering both standard and tighter tolerance options in a hermetically sealed glass package.

Replacement Considerations

Equivalent axial leaded versions include the 1N4707-1. Surface mount replacements may include other manufacturers' DO-213AA Zener diodes rated at 20V and 0.5W, provided they meet the hermetic sealing and metallurgical bond requirements.