1N4734UR-1/TR

Overview

The Microchip Technology 1N4734AUR-1/TR is a surface mountable 1.0 W glass Zener diode in the DO-213AB MELF package. It provides a nominal Zener voltage of 5.6 V with a standard tolerance of +/- 5%. Electrical characteristics include a maximum dynamic impedance of 5 Ohms at a test current of 45 mA and a maximum reverse current of 10 µA at 1 V. The device operates within a temperature range of -65°C to +175°C, features a thermal resistance of 50°C/W junction-to-end-cap, and supports steady-state power dissipation of 1.00 W.

Feature Summary

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

Applications

• Voltage regulation in high density electronic circuits
• High reliability systems requiring source control drawings
• Applications demanding low parasitic performance

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm exact electrical tolerances and packaging configurations. Confirm compliance requirements such as RoHS status if applicable. Ensure the requested quantity matches the manufacturer's tape and reel specifications. Cross-reference the part number with the latest datasheet revisions to validate all technical parameters before procurement.

Selection Notes

Select this component when a surface mount Zener diode with hermetic sealing is required for robust voltage regulation. The DO-213AB package offers an alternative to axial leads while maintaining equivalent electrical performance to the 1N4734A series. Consider the wide operating temperature range and radiation hardness for specialized environments. Verify that the 5% voltage tolerance meets the circuit design specifications.

Part Context

This device belongs to the 1N4728AUR through 1N4764AUR series of surface mount Zener diodes. These components are electrically equivalent to the JEDEC registered 1N4728A through 1N4764A series but utilize the DO-213AB outline. The series covers Zener voltages from 3.3 V to 100 V, providing a broad selection for various regulation needs in a compact form factor.

Replacement Considerations

The 1N4734A (DO-41) is the axial leaded equivalent. Surface mount alternatives include the SMAJ4734A series. For tighter tolerances, consider variants with C or D suffixes.