1N4737AUR/TR

Overview

The Microchip Technology 1N4737AUR/TR is a surface mountable 1.0 W glass Zener diode in the DO-213AB MELF package. It features a nominal Zener voltage of 7.5 V with a standard tolerance of +/- 5%. The device operates within a temperature range of -65°C to +175°C and includes a TR suffix indicating tape and reel packaging.

Feature Summary

• Hermetically sealed glass package suitable for high reliability applications
• Surface mount design ideal for high density mounting
• Electrically equivalent to JEDEC registered 1N4728 thru 1N4764 series

Applications

• Voltage regulation in high density circuits
• Applications requiring low parasitic requirements
• High reliability systems specified by source control drawings

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm packaging configuration. Ensure compatibility with existing board layouts regarding the DO-213AB footprint dimensions. Confirm thermal management requirements align with the specified power dissipation ratings at operating temperatures.

Selection Notes

Select this component when a hermetically sealed surface mount solution is required for voltage regulation. Consider the wide operating temperature range and radiation hardness characteristics for demanding environments. Verify that the 7.5 V nominal voltage meets circuit specifications.

Part Context

This part belongs to the 1N4728AUR through 1N4764AUR series of surface mount Zener diodes. These devices are designed as direct replacements for axial-leaded equivalents, offering similar electrical performance in a compact leadless package format defined by JEDEC outline DO-213AB.

Replacement Considerations

Equivalent axial-leaded parts include the 1N4737A registration. Surface mount plastic equivalents such as SMAJ4737A may be considered if hermetic sealing is not required.