1N4105/TR

Single Zener Diodes Overview

The Microchip Technology 1N4105/TR is a 500 mW silicon Zener diode in an axial-lead glass DO-35 package. It provides an 11 V nominal Zener voltage with a standard 5% tolerance. The device operates within a junction temperature range of -65°C to +175°C and features a maximum reverse leakage current of 8.5 µA at the specified test current of 250 µA.

Single Zener Diodes Feature Summary

• Hermetically sealed construction utilizing internal metallurgical bonding for high reliability.
• Low noise density characteristics suitable for sensitive signal applications.
• Qualified per MIL-PRF-19500/435 standards for demanding environments.

Single Zener Diodes Applications

• Precision voltage regulation circuits
• Low-noise reference sources
• High-reliability aerospace systems

Single Zener Diodes Procurement Notes

Verify that the specific ordering suffix matches the required qualification level, as commercial versions differ from military-grade specifications. Confirm RoHS compliance status if environmental regulations apply, noting that certain hermetic variants may not be compliant. Ensure the tape and reel packaging aligns with automated assembly requirements.

Single Zener Diodes Selection Notes

Select this component when a stable 11 V reference is required in a through-hole glass package. Consider the low noise density for analog signal paths. Evaluate thermal derating curves for power dissipation limits above 50°C ambient temperatures. Verify lead length constraints against board layout dimensions.

Single Zener Diodes Part Context

This part belongs to the 1N4099-1 through 1N4135-1 series of 500 mZener diodes. These devices are designed for applications requiring robust performance across wide temperature ranges. The series offers various voltage options while maintaining consistent physical dimensions and electrical characteristics typical of the family.

Single Zener Diodes Replacement Considerations

Direct substitutes include other manufacturers' 1N4105 equivalents meeting the same 11 V, 500 mW, and DO-35 specifications. Cross-reference MIL-PRF-19500/435 qualified parts for identical radiation hardness and reliability levels. Verify pinout compatibility and thermal resistance values before substitution.