1N4689UR-1

Overview

The Microchip Technology 1N4689UR-1 is a Zener voltage regulator diode designed for surface mount applications. It utilizes the DO-213AA (MELF) glass package and provides a nominal Zener voltage of 5.1 V with a standard tolerance of ±5%. The device features a maximum power dissipation of 0.5 W and operates within an extended temperature range from -65°C to +175°C. Key electrical characteristics include a maximum reverse leakage current of 1 µA at 4 V and a low test current of 50 µA, ensuring stable regulation across broad operating conditions.

Feature Summary

• Surface mount equivalent of JEDEC registered 1N4689 series
• Internal metallurgical bond for high reliability
• Low test current of 50 µA for precise regulation

Applications

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

Procurement Notes

Verify component authenticity through authorized Microchip distributors or certified suppliers. Confirm RoHS compliance status as commercial grade devices may vary. Ensure proper handling procedures for glass MELF packages during assembly to prevent mechanical stress. Cross-reference datasheet revisions to confirm specific lot traceability requirements for critical applications.

Selection Notes

Select this component when a surface mount solution is required for the 1N4689 specification. The DO-213AA package offers compact footprint advantages over axial leads. Consider the 50 µA test current requirement for biasing circuit design. Evaluate thermal management needs given the 0.5 W power rating in enclosed environments.

Part Context

This part belongs to the 1N4678UR-1 through 1N4717UR-1 series of 0.5 watt glass surface mount Zener diodes. The series covers a voltage selection from 1.8 to 43 volts. These components serve as direct surface mount replacements for traditional through-hole JEDEC registered equivalents, maintaining identical electrical performance in a modern packaging format.

Replacement Considerations

Direct surface mount equivalent to the through-hole 1N4689. Verify pinout compatibility if replacing axial variants in existing footprints.