1N4111UR/TR

Single Zener Diodes Overview

The Microchip Technology 1N4111UR/TR is a glass surface mount Zener voltage regulator with a nominal breakdown voltage of 17 V. It operates within the 1N4099UR through 1N4135UR series, providing standard 5% tolerance without suffix letters. The device utilizes a hermetically sealed DO-213AA (SOD80/MLL34) MELF package and supports tape and reel packaging via the TR suffix. It features a maximum steady-state power dissipation of 0.5 watts at an end cap temperature below 100°C or ambient temperature below 25°C.

Single Zener Diodes Feature Summary

• Hermetically sealed glass DO-213AA MELF style package
• Inherently radiation hard design
• Minimal capacitance characteristics
• ESD nonsensitive per MIL-STD-750 Method 1020

Single Zener Diodes Applications

• Voltage regulation in broad operating current ranges
• Temperature compensation circuits
• Reference voltage generation

Single Zener Diodes Procurement Notes

Verify that the part number includes the TR suffix to confirm tape and reel packaging configuration. Ensure the absence of additional suffixes like -1, C, or D to maintain standard 5% voltage tolerance specifications. Confirm RoHS compliance status if required by assembly standards.

Single Zener Diodes Selection Notes

Select this component for applications requiring a 17 V reference in a compact surface mount form factor. Consider the 0.5 W power rating and thermal resistance values when designing heat dissipation paths on FR4 PCBs. Evaluate the minimal capacitance feature for high-frequency noise sensitivity requirements.

Single Zener Diodes Part Context

This component belongs to the Microsemi Scottsdale Division 1N4099UR through 1N4135UR series of 0.5 watt glass surface mount Zeners. These devices serve as surface mount equivalents to JEDEC registered axial-leaded diodes, offering a selection from 1.8 to 100 volts in standard tolerances.

Single Zener Diodes Replacement Considerations

Equivalent axial-leaded parts include the 1N4111 series. Surface mount alternatives within the same family are MLL4111. Military qualified variants with internal metallurgical bonds are available as 1N4111UR-1.