1N3509A

Single Zener Diodes Overview

The Microchip Technology 1N3509A is a Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 4.3V with a tolerance of 5%. The device operates at a test current of 20.0mA and has a maximum power dissipation rating of 400mW. Additional electrical characteristics include a reverse leakage current of 18.0µA. This component is manufactured by Microsemi Corporation, which is part of the Microchip portfolio.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation through Zener breakdown mechanism
• Designed for through-hole mounting configurations
• Engineered for reliable performance in voltage reference circuits

Single Zener Diodes Applications

• Voltage regulation in electronic circuits
• Voltage reference sources
• Overvoltage protection stages

Single Zener Diodes Procurement Notes

Verify the manufacturer designation as Microchip Technology or Microsemi Corporation when sourcing. Confirm the package type matches through-hole requirements. Ensure the specific suffix indicates the correct tolerance and power rating variants. Cross-reference datasheets to confirm electrical parameters align with design specifications before procurement.

Single Zener Diodes Selection Notes

Select this component based on the required 4.3V regulation point and 400mW power dissipation limit. Consider the 5% voltage tolerance for precision requirements. Evaluate thermal management needs relative to the specified power rating. Verify compatibility with existing circuit board layouts for through-hole installation.

Single Zener Diodes Part Context

The 1N3509A belongs to the standard Zener diode family produced by Microchip Technology. It serves as a fundamental passive component for maintaining constant voltage levels in various electronic systems. The part is widely recognized for its reliability in industrial and commercial applications requiring precise voltage control.

Single Zener Diodes Replacement Considerations

Substitutes such as the 1N3824A-1 may be considered if electrical parameters match. Verify that replacement parts maintain equivalent Zener voltage, power dissipation, and package dimensions. Ensure compatibility with existing circuit constraints before implementing any alternative components.