1N4119/TR

Single Zener Diodes Overview

The Microchip Technology 1N4119/TR is a 28V Zener voltage regulator diode housed in a hermetically sealed glass DO-35 (DO-204AH) axial-lead package. It features an internal metallurgical bond and operates within a temperature range of -65°C to +175°C. The device provides a nominal Zener voltage of 28V at a test current of 250 µA, with a maximum dynamic impedance of 200 Ω and a maximum reverse leakage current of 21.3 µA. Rated for 0.5W power dissipation, it offers standard 5% voltage tolerance.

Single Zener Diodes Feature Summary

• Hermetically sealed glass construction with internal metallurgical bonding
• Capable of regulating voltage across broad ranges of current and temperature
• Qualified per MIL-PRF-19500/435 for high reliability applications
• Inherently radiation hard

Single Zener Diodes Applications

• High reliability voltage regulation circuits
• Radiation-hardened electronic systems
• Precision reference voltage generation

Single Zener Diodes Procurement Notes

Verify the specific reliability level required, as the base part number covers commercial through JANS qualifications. Confirm RoHS compliance status if applicable, noting that certain suffixes may indicate non-compliant versions. Ensure the tape and reel packaging matches the specified TR suffix for automated assembly requirements.

Single Zener Diodes Selection Notes

Select this component when a stable 28V reference is needed in harsh environments. Consider the low noise density characteristics for sensitive analog front ends. Evaluate thermal derating curves for operation above 25°C ambient temperatures to ensure safe power dissipation limits are maintained.

Single Zener Diodes Part Context

This device belongs to the 1N4099-1 through 1N4135-1 series of 500mW Zener diodes manufactured by Microsemi/Microchip. These components are JEDEC registered and designed for robust performance in demanding industrial and military-grade applications requiring precise voltage control.

Single Zener Diodes Replacement Considerations

Direct replacements include other 1N4119 variants from different manufacturers meeting the same electrical specifications. Verify package compatibility and lead configuration before substitution.