1N5524CUR-1

Overview

The 1N5524CUR-1 is a single Zener diode manufactured by Microchip Technology, designed for surface-mount applications. It features a nominal Zener voltage of 5.6 V with a tolerance of ±2%. The device has a maximum power dissipation of 500 mW and utilizes the DO-213AA (MLL34/MELF-2) hermetically sealed glass package. Key electrical characteristics include a maximum dynamic impedance of 30 Ω and a reverse leakage current of 2 µA at 3 V.

Feature Summary

• Provides precise voltage regulation with a tight ±2% tolerance on the 5.6 V Zener voltage.
• Utilizes a hermetically sealed glass MELF-style package suitable for harsh environments.
• Offers low dynamic impedance to maintain stable voltage under varying current conditions.

Applications

• Precision voltage reference circuits
• Overvoltage protection in sensitive electronic systems
• Clamping applications in signal processing paths

Procurement Notes

Verify the specific suffix CUR-1 indicates the ±2% tolerance variant and surface-mount MELF packaging distinct from standard axial versions. Confirm RoHS compliance status and hermetic sealing requirements against project specifications before ordering. Ensure the supplier provides traceability documentation for the glass encapsulation integrity.

Selection Notes

Select this component when high precision is required due to its narrow ±2% voltage tolerance compared to standard ±5% or ±10% variants. The surface-mount DO-213AA package is preferred for automated assembly and compact board layouts. Consider the hermetic seal for reliability in extreme temperature or humidity conditions where standard plastic packages may fail.

Part Context

This part belongs to the Microchip 1N55xx series of low-voltage surface mount Zener diodes. These devices are engineered as direct replacements for traditional axial leaded equivalents but offer improved mechanical stability and suitability for modern SMT manufacturing processes. The series covers a range of voltages from 3.3 V to 33 V with various tolerance options.

Replacement Considerations

Direct substitutes include other manufacturers' 5.6 V Zener diodes in the DO-213AA package with ±2% tolerance. Verify that replacement parts meet the same 500 mW power rating and hermetic sealing standards if environmental resistance is critical.

FAQ

What is the difference between 1N5524 and 1N5524CUR-1?

The 1N5524 is typically an axial leaded through-hole component with ±20% tolerance, whereas the 1N5524CUR-1 is a surface-mount device in a DO-213AA package with a tighter ±2% voltage tolerance.

Is the 1N5524CUR-1 hermetically sealed?

Yes, the 1N5524CUR-1 uses a hermetically sealed glass MELF (DO-213AA) package, providing protection against moisture and contaminants.