1N4127UR/TR

Single Zener Diodes Overview

The Microchip Technology 1N4127UR/TR is a glass surface mount Zener voltage regulator with a nominal breakdown voltage of 56 V. It operates within a standard tolerance of ±5% and features a maximum Zener impedance of 300 Ohms at a test current of 250 µA. The device dissipates up to 0.5 watts and maintains functionality across an operating temperature range of -65°C to +175°C. Packaged in the hermetically sealed DO-213AA (SOD80) MELF style, it includes a tape and reel option for automated assembly.

Single Zener Diodes Feature Summary

• Hermetically sealed glass DO-213AA package providing environmental protection
• Inherently radiation hard construction suitable for harsh environments
• ESD non-sensitive performance verified per MIL-STD-750 Method 1020
• Low noise density characteristics optimized for precision regulation

Single Zener Diodes Applications

• Precision voltage reference circuits
• Overvoltage protection stages
• Temperature compensated power supplies
• Radiation-hardened electronic systems

Single Zener Diodes Procurement Notes

Verify that the specific part number suffix matches the required packaging configuration. Confirm RoHS compliance status if lead-free terminations are mandatory for the assembly process. Ensure the ordering documentation explicitly references the correct JEDEC registration series to guarantee electrical parameter alignment with design specifications.

Single Zener Diodes Selection Notes

Select this component when a surface mount equivalent to axial-leaded 1N4127 is required. Consider the 300 Ohm impedance limit for load regulation requirements. Evaluate the thermal resistance constraints for high-power dissipation scenarios. Verify that the 56 V breakdown aligns with the target circuit reference needs.

Single Zener Diodes Part Context

This device belongs to the 1N4099UR through 1N4135UR series of 0.5-watt glass Zener regulators. It serves as the surface mount counterpart to traditional axial components, offering identical electrical performance in a compact MELF form factor. The series provides extensive voltage selection from 1.8 to 100 volts for diverse industrial applications.

Single Zener Diodes Replacement Considerations

Direct equivalents include the MLL4127 designation. Military variants such as 1N4127UR-1 offer internal metallurgical bonding options. Axial-leaded replacements like the standard 1N4127 provide mechanical interchangeability but differ in footprint.