1N4732AUR

Overview

The Microchip Technology 1N4732AUR is a surface mount Zener diode designed for voltage regulation applications. It utilizes the DO-213AB (MELF) package, providing a hermetically sealed glass construction suitable for high-reliability environments. The device operates with a nominal Zener voltage of 4.7 V and supports a power dissipation of 1 W. Key electrical characteristics include a maximum reverse leakage current of 100 nA and a Zener impedance of 22 Ohms at a test current of 12.5 mA. It functions within an extended temperature range from -65°C to +175°C.

Feature Summary

• Hermetically sealed glass MELF package ensures environmental stability
• High thermal performance supporting up to 1 W power dissipation
• Extended operating temperature range for harsh conditions

Applications

• Voltage reference circuits requiring stable regulation
• High-density surface mount designs with low parasitic requirements
• High reliability electronic systems governed by source control drawings

Procurement Notes

Verify the specific suffix against official Microchip documentation to confirm exact tolerance and testing specifications. Confirm RoHS compliance status as historical data may vary. Ensure the procurement channel provides valid traceability for this high-reliability component type before finalizing orders.

Selection Notes

Select this component when a hermetically sealed surface mount solution is required instead of through-hole packages. It serves as the direct surface mount equivalent to the 1N4732A in the DO-41 package. Consider the 22 Ohm impedance and 100 nA leakage limits for precision circuit design.

Part Context

This part belongs to the Microchip 1W Glass Zener Diode series. These devices are electrically equivalent to the registered 1N4728A through 1N4764A series but utilize the JEDEC-defined DO-213AB outline. They are engineered for applications demanding high density and robust voltage regulation capabilities.

Replacement Considerations

The 1N4732A in the DO-41 axial package is the electrical equivalent. Other manufacturers producing DO-213AB 4.7V 1W Zener diodes may offer compatible replacements if pinout and electrical parameters match.