1N5521A

Overview

The Microchip Technology 1N5521A is a Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 4.3 V with a tolerance of ±5%. The device supports a maximum power dissipation of 500 mW and operates within a temperature range of -65°C to +200°C junction temperature. It utilizes an axial DO-35 package for through-hole mounting, ensuring reliable performance in various electronic circuits requiring stable voltage references.

Feature Summary

• Provides precise voltage regulation at 4.3 V with tight manufacturing tolerances
• Capable of handling up to 500 mW of power dissipation for robust operation
• Engineered for extended thermal stability across a wide operating temperature range

Applications

• Voltage reference circuits in precision measurement equipment
• Overvoltage protection stages in power supply designs
• Clamping applications in signal conditioning networks

Procurement Notes

Verify the specific suffix designation when ordering, as variations such as C or D may indicate different tolerance grades despite sharing the base model number. Confirm package availability and ensure compliance with relevant environmental standards required for your specific assembly process before finalizing procurement plans.

Selection Notes

Select this component when a stable 4.3 V reference is required with moderate power handling capabilities. Ensure the circuit design accounts for the specified thermal limits and that the axial leaded format aligns with the intended PCB layout constraints for through-hole implementation.

Part Context

This part belongs to the standard Zener diode family manufactured by Microchip Technology. It serves as a fundamental discrete semiconductor component used widely in analog electronics for establishing fixed potential levels and protecting sensitive downstream components from voltage spikes.

Replacement Considerations

Equivalent parts include the 1N5521B and 1N5521C, which share similar electrical characteristics but may differ in voltage tolerance specifications. Verify compatibility with existing circuit parameters before substituting.