RD4.3ES(Y1)

Single Zener Diodes Overview

The RD4.3ES(Y1) is a Zener diode manufactured by Renesas Electronics Corporation, originally under the NEC brand lineage. It features a nominal Zener voltage of 4.3V and a power dissipation rating of 0.15W. The device utilizes a Silicon construction with unidirectional characteristics. It is housed in an Ultra Super Mini Mold package with two pins. This component serves as a voltage regulator diode designed for compact electronic applications requiring precise voltage reference or protection.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation at a nominal 4.3V level
• Utilizes a compact Ultra Super Mini Mold package for high-density mounting
• Constructed from silicon material for reliable unidirectional operation

Single Zener Diodes Applications

• Voltage regulation circuits
• Voltage reference applications
• General-purpose protection circuits

Single Zener Diodes Procurement Notes

Verify the specific suffix (Y1) against official Renesas documentation to confirm tape-and-reel specifications or binning details. Confirm current production status as legacy components may have limited availability. Ensure compatibility with existing PCB footprints for the Ultra Super Mini Mold package before procurement.

Single Zener Diodes Selection Notes

Select this component when a low-power, small-footprint Zener diode is required for 4.3V regulation. Consider the 0.15W power rating limits for thermal management. Verify that the Ultra Super Mini Mold package dimensions fit the design constraints compared to standard SOD-323 packages.

Single Zener Diodes Part Context

This part belongs to the RD series of Zener diodes produced by Renesas (formerly NEC). The series offers various voltage options within a standardized ultra-small package format. These diodes are commonly used in consumer electronics and industrial equipment where space savings are critical. The RD4.3ES variant specifically targets the 4.3V market segment.

Single Zener Diodes Replacement Considerations

Check for direct substitutes such as RD4.3UM or RD4.3ESB if available. Verify pinout compatibility and electrical parameters like impedance voltage tolerance. Ensure the replacement maintains the same package type and power dissipation capabilities.