1N3521A

Single Zener Diodes Overview

The Microchip Technology 1N3521A is a single Zener voltage regulator diode designed for through-hole mounting in the DO-35 axial package. It features a nominal Zener voltage of 13 V with a tight tolerance of ±5%. The device supports a maximum DC power dissipation of 500 mW and exhibits a maximum Zener impedance of 12 Ohms. It operates within an extended temperature range from -65°C to +175°C, ensuring reliability in demanding environments.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation at a nominal 13 V level
• Supports high-temperature operation up to 175°C junction temperature
• Utilizes a standard DO-35 axial leaded package for through-hole integration

Single Zener Diodes Applications

• Voltage reference circuits requiring precise 13 V levels
• Overvoltage protection stages in electronic systems
• General-purpose voltage regulation in industrial equipment

Single Zener Diodes Procurement Notes

Verify RoHS compliance status as the component may not meet current environmental directives. Confirm the specific manufacturing date code and lot traceability requirements with the supplier. Ensure that the procurement channel provides authentic Microchip Technology products to avoid counterfeit risks. Check for any specific handling instructions related to the axial lead form factor during assembly.

Single Zener Diodes Selection Notes

Select this component when a 13 V Zener voltage with ±5% tolerance is required. The 500 mW power rating suits low-to-moderate current applications. The wide operating temperature range makes it suitable for harsh environments. Consider the DO-35 package size for board space constraints compared to larger axial packages.

Single Zener Diodes Part Context

This part belongs to the 1N35xx series of 400 mW to 500 mW Zener diodes manufactured by Microchip Technology. These components are widely used in discrete semiconductor applications where reliable voltage clamping or referencing is necessary. The series offers various voltage options within the same physical footprint, simplifying inventory management for designers.

Single Zener Diodes Replacement Considerations

Direct substitutes include other 13 V Zener diodes in the DO-35 package with similar power ratings and tolerances. Verify electrical parameters such as Zener impedance and leakage current match the original design requirements before substitution.