1N4732AURE3

Overview

The Microchip Technology 1N4732AURE3 is a surface mount Zener diode designed for voltage regulation applications. It operates within the DO-213AB (MELF) package and provides a nominal Zener voltage of 4.7 V with a standard tolerance of ±5%. The device supports a maximum power dissipation of 1 W and maintains a low reverse leakage current of 10 µA at 1 V. It features a Zener impedance of 8 Ohms and functions reliably across an extended temperature range from -65°C to +175°C.

Feature Summary

• Hermetically sealed glass construction suitable for high-reliability environments
• Surface mount design compatible with JEDEC outline DO-213AB
• Wide operating temperature range extending up to +175°C

Applications

• Voltage regulation in high-density circuit designs
• High reliability electronic systems requiring hermetic sealing
• Low parasitic requirement applications

Procurement Notes

Verify the specific suffix configuration against official datasheets, as ordering codes may indicate variations in packaging or compliance status. Confirm availability through authorized distributors, as supply levels fluctuate. Ensure the selected variant matches the required hermetic seal specifications if mandated by source control drawings for critical applications.

Selection Notes

Select this component when a 4.7 V reference is needed in a compact surface mount form factor. The DO-213AB package offers electrical equivalence to the axial 1N4732A while providing lower parasitics. Consider the ±5% tolerance and 1 W power rating to ensure adequate margin for the target load conditions and thermal environment.

Part Context

This part belongs to the 1N4728A through 1N4764A series of 1-watt glass Zener diodes manufactured by Microchip Technology. These devices are engineered to meet the JEDEC surface mount outline DO-213AB, serving as direct replacements for their axial counterparts in modern PCB layouts. The series emphasizes high reliability and consistent performance across industrial temperature ranges.

Replacement Considerations

The 1N4732AUR serves as a non-rohs equivalent within the same series. For lead-free requirements, verify compatibility with the 1N4732AE3/TR13 variant, noting that the latter utilizes a DO-204AL axial package rather than the surface mount DO-213AB form factor.