1N4755AUR/TR

Overview

The Microchip Technology 1N4755AUR/TR is a surface mountable 1.0 W glass Zener diode in the DO-213AB (MELF) package. It provides a nominal Zener voltage of 43 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 5 µA at 32.7 V. Electrical characteristics are specified at a test current of 6.0 mA, with a dynamic impedance of 70 Ohms.

Feature Summary

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

Applications

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

Procurement Notes

Verify that the ordering suffix TR indicates tape and reel packaging configuration. Confirm the specific manufacturer designation as Microchip Technology or its predecessor entity Microsemi Scottsdale Division. Ensure the component meets RoHS compliance requirements if applicable to the project specifications.

Selection Notes

Select this component when a surface mount equivalent to the axial 1N4755A is required. The DO-213AB package offers leadless mounting benefits. Consider the wide operating temperature range and radiation hardness for demanding environments. Verify thermal derating curves against the specific PCB footprint used.

Part Context

This part belongs to the 1N4728AUR through 1N4764AUR series of surface mount Zener diodes. These devices 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.

Replacement Considerations

Direct surface mount equivalents include the MLL4755A designation. Axial leaded replacements include the 1N4755A in the DO-41 package.