1N4758AUR/TR

Single Zener Diodes Overview

The Microchip Technology 1N4758AUR/TR is a surface mountable 1.0 W glass Zener diode in the DO-213AB (MELF) package. It provides a nominal Zener voltage of 56 V with a standard tolerance of ±5%. The device operates within a temperature range of -65°C to +175°C and features a maximum dynamic impedance of 110 Ω at a test current of 4.5 mA. It includes a maximum reverse current of 5 μA at 42.6 V and supports a maximum regulator current of 80 mA.

Single Zener Diodes Feature Summary

• Hermetically sealed glass MELF package for high reliability applications
• Surface mount design ideal for high density mounting
• Inherently radiation hard per MicroNote 050
• Compatible with source control drawings for screening

Single Zener Diodes Applications

• Voltage regulation in high density circuits
• Clipping circuits requiring low parasitic characteristics
• High reliability electronic systems

Single Zener Diodes Procurement Notes

Verify the specific manufacturer designation, as this component originates from Microsemi which is now part of Microchip Technology. Confirm that the DO-213AB package dimensions match your PCB footprint requirements. Ensure the RoHS compliant e3 suffix is present if lead-free compliance is required for your assembly process.

Single Zener Diodes Selection Notes

Select this component when a surface mount equivalent to the axial 1N4758A is needed. It offers electrical equivalence to the JEDEC registered series while providing hermetic sealing. Consider the thermal resistance specifications for derating calculations on FR4 PC boards. Verify availability of tighter tolerance options if standard 5% accuracy is insufficient.

Single Zener Diodes Part Context

This device belongs to the 1N4728AUR through 1N4764AUR series of surface mount Zener diodes. It serves as the DO-213AB package counterpart to the traditional DO-41 axial leaded components. The series covers a wide voltage range from 3.3 V to 100 V, maintaining consistent power dissipation ratings across the lineup.

Single Zener Diodes Replacement Considerations

The 1N4758A is the direct axial leaded equivalent. Surface mount alternatives include the SMAJ4758A series. Cross-reference with MLL4758A for previous identification standards.