1N4686

Overview

The Microchip Technology 1N4686 is a single Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 3.9 V with a standard tolerance of 5%. The device operates in the DO-35 through-hole package and supports a maximum power dissipation of 500 mW. Electrical characteristics include a maximum reverse leakage current of 5 uA and a test current of 50 uA. The component functions within an extended temperature range from -65 C to +175 C, ensuring reliability across diverse environmental conditions.

Feature Summary

• Provides stable voltage regulation over a broad operating current and temperature range
• Constructed with glass axial-leaded DO-35 encapsulation for durability
• Offers guaranteed maximum voltage regulation performance

Applications

• Voltage reference circuits
• Overvoltage protection stages
• General-purpose voltage regulation

Procurement Notes

Verify the specific ordering suffix against official Microchip documentation to confirm exact electrical tolerances and packaging configurations. Ensure compliance with RoHS directives if required by the target application. Confirm lead times and availability directly with authorized distributors or the manufacturer prior to procurement planning.

Selection Notes

Select this component when a 3.9 V reference point is required in through-hole designs. Consider the 500 mW power rating and 5% voltage tolerance during circuit design. Evaluate thermal management requirements given the specified operating temperature limits and ensure the DO-35 package fits the intended PCB layout constraints.

Part Context

This part belongs to the 1N4678 through 1N4717 series of 0.5 W Zener Voltage Regulators produced by Microchip Technology. The series provides a wide selection of voltages from 1.8 to 43 volts in standard DO-35 packages. These components are widely used in industrial and commercial electronics requiring reliable discrete voltage regulation.

Replacement Considerations

Equivalent parts include the 1N4686DD7E3 (1% tolerance) and MV1N4686 variants. Verify pinout compatibility and power ratings before substitution.