1N4732AUR/TR

Overview

The Microchip Technology 1N4732AUR/TR is a surface mountable 1.0 W glass Zener diode in the DO-213AB MELF package. It provides a nominal Zener voltage of 4.7 V with a standard tolerance of +/- 5%. The device operates within a temperature range of -65°C to +175°C and features a maximum reverse current of 10 µA at 1 V. Electrical characteristics include a test current of 53 mA, a dynamic impedance of 8 Ohms, and a maximum forward voltage of 1.2 V at 200 mA.

Feature Summary

• Hermetically sealed glass package suitable for high reliability applications
• Surface mount design ideal for high density mounting with low parasitic requirements
• Inherently radiation hard per MicroNote 050
• Compatible with MIL-PRF-19500 screening options

Applications

• Voltage regulation in high density circuits
• High reliability electronic systems requiring source control drawings
• Radiation-hardened environments

Procurement Notes

Verify the specific ordering suffix against the manufacturer's datasheet to confirm compliance with RoHS standards and terminal plating specifications. Confirm that the TR suffix correctly indicates tape and reel packaging as defined by EIA-481-B standards before finalizing procurement orders.

Selection Notes

Select this component when a surface mount equivalent to the axial 1N4732A is required. Ensure the application supports the 1.0 W power dissipation limit and verify thermal management capabilities for the DO-213AB package footprint.

Part Context

This part belongs to the 1N4728AUR through 1N4764AUR series of surface mount Zener diodes. These devices are electrically equivalent to their JEDEC registered DO-41 counterparts but utilize the DO-213AB outline. The series covers Zener voltages from 3.3 V to 100 V.

Replacement Considerations

Direct electrical equivalents include the 1N4732A in the DO-41 package or the MLL4732A series. Surface mount alternatives such as the SMAJ4732A may be considered if package compatibility allows.