1N4729UR-1/TR

Single Zener Diodes Overview

The Microchip Technology 1N4729UR-1/TR is a surface mount glass Zener diode with a nominal voltage of 3.6 V and a standard tolerance of ±5%. It operates in the DO-213AB (MELF) package, dissipating up to 1.0 W at 25°C. The device features a maximum dynamic impedance of 10 Ohms at a test current of 69 mA and a reverse leakage current of 100 µA at 1 V. It supports an operating temperature range from -65°C to +175°C and includes a tape and reel packaging option.

Single Zener Diodes Feature Summary

• Hermetically sealed glass MELF package for high reliability
• Surface mount design suitable for high density mounting
• Inherently radiation hard per MicroNote 050
• ESD nonsensitive construction

Single Zener Diodes Applications

• Voltage regulation in high density circuits
• High reliability applications requiring source control drawings
• Low parasitic requirement environments

Single Zener Diodes Procurement Notes

Verify the specific suffix configuration against official documentation to confirm electrical tolerances and screening levels. Confirm that the 'TR' suffix indicates tape and reel packaging as specified in the datasheet. Ensure compatibility with the DO-213AB footprint and check for RoHS compliance requirements if applicable.

Single Zener Diodes Selection Notes

Select this component when a 1.0 W surface mount Zener diode with a 3.6 V breakdown voltage is required. Consider the DO-213AB package for space-constrained designs. Evaluate thermal derating curves for steady-state power dissipation based on ambient or end-cap temperatures.

Single Zener Diodes Part Context

This part belongs to the 1N4728UR through 1N4764AUR series of surface mountable 1 watt Zener diodes. These devices are electrically equivalent to the JEDEC registered 1N4728A through 1N4764A axial leaded series but utilize the DO-213AB outline. The series offers a wide selection of voltages from 3.3 V to 100 V.

Single Zener Diodes Replacement Considerations

Direct equivalents include the 1N4729AUR and MLL4729A. For axial lead replacements, consider the 1N4729A. Surface mount SMAJ equivalents are also available within the same product family.