1N4626/TR

Overview

The Microchip Technology 1N4626/TR is a surface-mount Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 5.6 V with a tight tolerance of 2%. The device operates in the DO-213AA-2 (SOD-80) package and dissipates up to 500 mW. Key electrical characteristics include a maximum reverse leakage current of 5 µA and a Zener impedance of 1.4 kΩ at a test current of 250 µA. It supports an extended operating temperature range from -65°C to +175°C, ensuring reliability in demanding environments.

Feature Summary

• Provides precise voltage regulation with a 2% tolerance on the 5.6 V Zener voltage.
• Constructed with metallurgically bonded glass technology for enhanced durability.
• Capable of operation across a wide industrial and military temperature spectrum.
• Designed for compact surface-mount integration using the DO-213AA-2 footprint.

Applications

• Precision voltage reference circuits requiring stable DC levels.
• Over-voltage protection stages in sensitive electronic systems.
• Clamping applications in signal processing paths.
• Power supply regulation modules operating under harsh thermal conditions.

Procurement Notes

Verify that the specific suffix matches the required packaging format, as standard bulk variants exist alongside tape-and-reel options. Confirm compliance requirements such as RoHS status, noting that certain military-grade designations may differ from commercial equivalents. Ensure the supplier provides valid traceability documentation for components intended for high-reliability or aerospace deployments.

Selection Notes

Select this component when a low-leakage, high-precision Zener regulator is needed in a small surface-mount form factor. The 2% tolerance makes it suitable for applications where standard 5% parts are insufficient. Consider the 1.4 kΩ impedance value for noise-sensitive designs, and verify that the 500 mW power rating aligns with the expected dissipation in the target circuit layout.

Part Context

This part belongs to the broader 1N4626 series of Zener diodes manufactured by Microchip Technology. It shares functional similarities with other axial-leaded versions like the JAN1N4626 but utilizes a surface-mount package for automated assembly. The device is often grouped with other 5.6 V regulators in the 1N46xx family, offering consistent performance metrics across different physical packages.

Replacement Considerations

Direct substitutes include the JAN1N4626-1 for surface-mount compatibility or the JAN1N4626 for through-hole implementations. Verify pinout and package dimensions when swapping between SMD and axial variants to ensure mechanical fit within the existing PCB design constraints.