1N5523B

Overview

The Microchip Technology 1N5523B is a single silicon Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 5.1 V with a tolerance of ±5%. The device operates within a power dissipation limit of 500 mW and is tested at a current of 5 mA. Key electrical characteristics include a maximum reverse leakage current of 2 µA and a Zener impedance of 26 Ohms. It supports a forward current of 200 mA with a forward voltage of 1.1 V. The component is rated for an operating temperature range from -65°C to +175°C.

Feature Summary

• Provides stable voltage regulation using a single Zener junction configuration.
• Features low reverse leakage current for improved circuit efficiency.
• Constructed with metallurgically bonded elements for enhanced reliability.
• Capable of operation across extended industrial temperature ranges.

Applications

• Voltage reference circuits requiring precise potential levels.
• Overvoltage protection stages in electronic systems.
• Clamping applications for signal line stabilization.

Procurement Notes

Verify the specific suffix (e.g., B, C, D) against design requirements as it dictates voltage tolerance precision. Confirm package type availability, as variants exist in DO-35 axial leaded and DO-213AA MELF formats. Check RoHS compliance status for environmental regulations. Ensure testing conditions match datasheet specifications for accurate performance validation during integration.

Selection Notes

Select this component when a 5.1 V reference is needed with standard 5% tolerance. Consider the 500 mW power rating for thermal management in the target enclosure. Evaluate the 26 Ohm impedance for noise sensitivity in the application. Compare alternative suffixes if tighter voltage accuracy or different packaging styles are required by the PCB layout constraints.

Part Context

This part belongs to the 1N55xx series of low-noise Zener diodes manufactured by Microchip Technology. The series utilizes double plug construction and metallurgical bonding techniques. These devices are often specified for military and aerospace standards such as MIL-PRF-19500/437. The 1N5523B specifically denotes the 5.1 V variant within this established regulatory family.

Replacement Considerations

Equivalent parts include 1N5523C and 1N5523D from Microchip Technology, which offer tighter voltage tolerances. Cross-brand replacements must match the 5.1 V Zener voltage, 500 mW power dissipation, and compatible package dimensions to ensure mechanical fit and electrical functionality.