1N3993RA

Single Zener Diodes Overview

The Microchip Technology 1N3993RA is a general-purpose voltage regulator diode designed for stud-mount applications. It features a nominal Zener voltage of 3.9V with a tolerance of ±5%. The device supports a maximum power dissipation of 10W and a continuous forward current of 640mA. Key electrical parameters include a maximum reverse leakage current of 100µA and a dynamic impedance of 2 Ohms. It operates within a temperature range of 0°C to 175°C and utilizes the DO-203AA (DO-4) package.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation using a stud-mount configuration for efficient thermal management
• Capable of handling high power dissipation up to 10W for robust performance in demanding circuits
• Offers precise voltage reference with tight tolerance specifications for accuracy

Single Zener Diodes Applications

• General purpose voltage regulation
• Voltage reference circuits
• Power supply protection

Single Zener Diodes Procurement Notes

Verify the specific suffix 'RA' against official Microchip documentation to confirm exact mechanical and electrical tolerances, as suffixes often denote specific packaging or testing variations. Ensure the stud-mount interface matches your heat sink requirements. Confirm RoHS compliance status directly from the manufacturer's datasheet, as regulatory status can vary by production batch and region. Cross-reference the DO-203AA package dimensions with your PCB layout constraints.

Single Zener Diodes Selection Notes

Select this component when a high-power, stud-mounted Zener diode is required for voltage clamping or regulation. The 10W power rating and low dynamic impedance make it suitable for applications requiring stable voltage references under varying load conditions. Consider the operating temperature range of 0°C to 175°C for high-temperature environments. Ensure the mounting hardware accommodates the stud-mount style for proper thermal contact.

Single Zener Diodes Part Context

The 1N3993RA belongs to the family of general-purpose Zener diodes manufactured by Microchip Technology. These devices are typically used in industrial and commercial electronics where reliable voltage regulation is critical. The stud-mount design distinguishes it from standard leaded packages, offering superior thermal conductivity for high-power applications. This part number represents a specific variant within the broader 1N series of voltage regulator diodes.

Single Zener Diodes Replacement Considerations

The 1N3993A is listed as a parametric equivalent substitute. Verify that the mechanical mounting details and electrical tolerances of the substitute match the original design requirements before implementation.