1N4737UR-1/TR

Overview

The Microchip Technology 1N4737UR-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 7.5 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 5 V. Electrical characteristics include a test current of 34 mA, a dynamic impedance of 4.0 Ohms at IZT, and a maximum regulator current of 0.5 A at TA = 50°C.

Feature Summary

• Hermetically sealed glass package suitable for high reliability applications
• Surface mount leadless design ideal for high density mounting
• Inherently radiation hard per MicroNote 050

Applications

• Voltage regulation in high density circuit designs
• 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 and compliance status. Confirm that the TR suffix corresponds to tape and reel quantities as defined in the datasheet. Ensure compatibility with MIL-STD-750 soldering methods if required by the application specifications.

Selection Notes

Select this component when a 1.0 W surface mount Zener diode is required for voltage regulation. The DO-213AB package offers an alternative to axial-leaded equivalents while maintaining electrical equivalence. Consider the hermetic seal and radiation hardness for environments demanding high reliability or specific screening options.

Part Context

This part belongs to the 1N4728AUR through 1N4764AUR series of surface mount 1.0 W glass Zener diodes. The series is electrically equivalent to the JEDEC registered 1N4728A through 1N4764A registration in the DO-41 package but utilizes the DO-213AB outline. Alternate identification includes the MLL4728A through MLL4764A series.

Replacement Considerations

Electrically similar to the JEDEC registered 1N4728 thru 1N4764 zener series.