1N4736UR-1/TR

Overview

The Microchip Technology 1N4736UR-1/TR is a surface mount glass Zener diode in the DO-213AB MELF package. It provides a nominal Zener voltage of 6.8 V with a standard tolerance of +/- 5%. The device dissipates 1.0 W at 25°C and operates within a temperature range of -65°C to +175°C. Electrical characteristics include a test current of 37 mA, a maximum dynamic impedance of 3.5 Ohms, and a maximum reverse current of 10 µA.

Feature Summary

• Hermetically sealed glass MELF package for high reliability
• Surface mount design suitable for high density mounting
• 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 designs

Procurement Notes

Verify the specific ordering suffix against manufacturer documentation to confirm tape and reel packaging details. Confirm RoHS compliance status by checking for the e3 suffix if required. Ensure the component meets the necessary MIL-PRF-19500 screening levels if sourcing for military or aerospace specifications.

Selection Notes

Select this component when a surface mount equivalent to the axial 1N4736A is needed. The DO-213AB package offers lower parasitics compared to through-hole options. Verify that the 6.8 V breakdown voltage aligns with circuit requirements and that the 1.0 W power dissipation rating accommodates thermal constraints on the PCB.

Part Context

This part belongs to the 1N4728UR thru 1N4764AUR series of surface mountable 1 watt Zener diodes. These devices are electrically equivalent to their JEDEC registered DO-41 counterparts but utilize the DO-213AB outline. The series covers Zener voltages from 3.3V to 100V, offering flexibility for various regulation needs.

Replacement Considerations

The 1N4736A is the direct axial leaded equivalent. For surface mount replacements, verify pinout compatibility and thermal derating curves. Other variants in the series may be considered if voltage or tolerance requirements differ.