1N4690E3

Overview

The Microchip Technology 1N4690E3 is a single Zener diode rated at 5.6 V nominal voltage with a ±5% tolerance. It features a maximum power dissipation of 500 mW and operates within a temperature range of -65°C to +175°C junction temperature. The device utilizes a DO-204AA (DO-7) axial-leaded package for through-hole mounting. Key electrical characteristics include a maximum reverse leakage current of 10 µA at 4 V and a forward voltage of 1.1 V at 200 mA. This component is RoHS compliant and serves as a voltage regulator in electronic circuits.

Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Constructed with an internal metallurgical bond for enhanced reliability
• Features hermetically sealed glass construction suitable for harsh environments

Applications

• Voltage reference circuits requiring precise potential levels
• Overvoltage protection stages in sensitive electronics
• General-purpose voltage regulation in industrial equipment

Procurement Notes

Verify the specific suffix 'E3' confirms RoHS compliance and lead-free status, as standard 1N4690 variants may differ. Confirm the package type matches DO-204AA requirements for your PCB layout. Check for military screening prefixes if high-reliability applications are intended, as these alter the part number significantly. Ensure the manufacturer source is Microchip or authorized distributor to avoid counterfeit components.

Selection Notes

Select this component when a 5.6 V regulation point is required with moderate power handling capabilities. The DO-7 package offers a compact axial form factor compared to larger DO-35 equivalents. Consider the ±5% tolerance for general applications; tighter tolerances require different suffixes. Evaluate the 500 mW dissipation limit against expected thermal conditions in the final assembly.

Part Context

This part belongs to the 1N4678 through 1N4717 series of 0.5 W Zener voltage regulators. The series provides a wide selection of voltages from 1.8 V to 43 V. These devices are widely used in commercial and industrial applications due to their robust glass encapsulation and consistent performance characteristics over time and temperature variations.

Replacement Considerations

Direct substitutes include other manufacturers' 1N4690 parts meeting JEDEC standards. For higher reliability, consider the 1N4690-1 variant with metallurgical bonding. Surface mount alternatives exist in the 1N4690UR-1 series using DO-213AA packages.