1N5297-1E3/TR

Overview

The 1N5297-1E3/TR is a current regulator diode manufactured by Microchip Technology, designed for surface-mount applications in the SOD-80 package. It provides a regulated current of 4.7 mA with a maximum anode-cathac voltage rating of 100 V and a power dissipation of 500 mW. The device operates within a temperature range of -65°C to +175°C and features a standard 10% current tolerance. This component serves as a constant current source, functioning as a counterpart to Zener diodes which regulate voltage over a broad current range.

Feature Summary

• Provides stable current regulation across a wide voltage range
• Utilizes a compact surface-mount package for automated assembly
• Operates reliably in high-temperature environments up to 175°C

Applications

• Constant current sources for LED driving circuits
• Biasing elements for transistor amplifier stages
• Current limiting protection in sensitive electronic loads

Procurement Notes

Verify the specific suffix configuration against official Microchip documentation to ensure compatibility with required environmental standards and packaging formats. Confirm that the SOD-80 footprint matches the target PCB design constraints. Cross-reference the part number with authorized distributors to validate authenticity and traceability records prior to procurement.

Selection Notes

Select this component when a fixed current sink is required in a space-constrained surface-mount design. Ensure the operating voltage remains below the 100 V maximum rating while exceeding the minimum dropout voltage for proper regulation. Consider the thermal management requirements given the 500 mW power dissipation limit in enclosed assemblies.

Part Context

This part belongs to the 1N5283-1 through 1N5314-1 series of current regulator diodes. These devices are commercially available versions of military-qualified parts, offering similar functionality in standard axial or surface-mount packages. The series provides a selection of currents ranging from 0.22 mA to 4.7 mA with 10% tolerances.

Replacement Considerations

Compatible substitutes include other 4.7 mA current regulator diodes in SOD-80 packages, such as the JANTX1N5297-1 for leaded equivalents. Verify pinout compatibility and thermal characteristics when replacing with generic current regulator diodes from other manufacturers.