1N4689-1E3

Overview

The Microchip Technology 1N4689-1E3 is a single silicon Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 5.1 V with a tolerance of ±5%. The device is rated for a maximum power dissipation of 0.5 W (500 mW) and operates within a temperature range of -65 °C to 200 °C. Packaged in the DO-204AH (DO-35) axial leaded format, it provides unidirectional conduction characteristics suitable for through-hole mounting.

Feature Summary

• Provides stable voltage regulation at a nominal 5.1 V reference level
• Constructed from silicon material for reliable semiconductor performance
• Designed for through-hole assembly using the DO-204AH axial package

Applications

• Voltage reference circuits requiring precise potential levels
• Overvoltage protection stages in electronic systems
• General-purpose voltage regulation in low-power designs

Procurement Notes

Verify the specific suffix designation when ordering, as variants such as 1N4689-1E3/TR may indicate tape-and-reel packaging configurations distinct from standard bulk units. Confirm RoHS compliance status explicitly, as historical data indicates some related part numbers may not be certified. Ensure the required power rating of 0.5 W aligns with the thermal management capabilities of the target circuit design before finalizing procurement.

Selection Notes

Select this component when a fixed 5.1 V Zener reference is required in an axial package. The 0.5 W power rating supports moderate current loads compared to lower-wattage alternatives. Consider the ±5% tolerance if tighter voltage accuracy is needed, as other series parts may offer different precision levels. The DO-204AH form factor dictates board layout constraints regarding lead spacing and hole drilling requirements.

Part Context

This part belongs to the standard 1N4689 series of Zener diodes manufactured by Microchip Technology. It serves as a fundamental discrete semiconductor component for maintaining steady voltage levels in analog and digital circuits. The product line includes various packaging options and tolerance grades to accommodate diverse industrial and commercial electronic design specifications.

Replacement Considerations

Direct substitutes include the 1N4689B or 1N4689A variants, which share identical electrical characteristics but may differ in manufacturing origin or specific tolerance bands. Cross-reference with generic 1N4689 equivalents from other manufacturers, ensuring the replacement matches the 5.1 V Zener voltage, 0.5 W power dissipation, and DO-204AH package dimensions.