1N5523BUR-1E3

Overview

The 1N5523BUR-1E3 is a single silicon Zener diode manufactured by Microchip Technology, designed for surface mount applications. It features a nominal Zener voltage of 5.1 V with a standard tolerance of 5%. The device operates within a power dissipation rating of 500 mW and is housed in the DO-213AA-2 package. Key electrical characteristics include a maximum reverse leakage current of 2 µA at specified conditions, a dynamic impedance of 26 Ohms, and a test current of 5 mA. It supports a wide operating temperature range from -65°C to +175°C.

Feature Summary

• Provides stable voltage regulation using avalanche breakdown principles in a compact surface mount form factor.
• Features metallurgically bonded glass construction for enhanced reliability under thermal stress.
• Capable of operation across an extended industrial temperature range suitable for harsh environments.

Applications

• Voltage reference circuits requiring precise potential levels
• Overvoltage protection stages in sensitive electronic systems
• Clamping applications in signal processing paths

Procurement Notes

Verify the specific suffix codes against official Microchip documentation to ensure correct tolerance and packaging specifications. Confirm RoHS compliance status and lead-free material declarations prior to integration. Cross-reference the DO-213AA footprint dimensions with PCB layout requirements to guarantee mechanical fitment and soldering integrity during assembly processes.

Selection Notes

Select this component when a surface mount solution is required for low-voltage regulation tasks. Ensure the circuit design accommodates the 500 mW power dissipation limit and the 26 Ohm dynamic impedance. Verify that the 5% voltage tolerance aligns with system precision requirements. Consider the extended temperature range if the application involves significant thermal variations.

Part Context

This part belongs to the 1N5518B through 1N5546B series of low-voltage avalanche Zener diodes produced by Microchip Technology. The series offers various voltage options ranging from 3.3 to 33 volts with different tolerance grades. The BUR variant specifically denotes the surface mount configuration, providing a modern alternative to traditional axial-leaded packages while maintaining similar electrical performance profiles.

Replacement Considerations

Consult official Microchip substitution guides for verified equivalents. Generic replacements may not match the specific metallurgical bonding or temperature ratings.