JAN1N4990CUS/TR

Single Zener Diodes Overview

The JAN1N4990CUS/TR is a military-qualified, surface-mount Zener voltage regulator manufactured by Microchip Technology. Qualified to MIL-PRF-19500/406, this component features a hermetically sealed void-less glass package with an internal metallurgical bond. It provides a nominal Zener voltage of 220V with a tight tolerance of ±2%, indicated by the 'C' suffix. The device operates within a junction temperature range of -65°C to +175°C and dissipates up to 1.5W at 25°C ambient temperature.

Single Zener Diodes Feature Summary

• Hermetically sealed void-less glass construction with tungsten slugs for high reliability
• Internal Category I metallurgical bonds ensuring robust mechanical integrity
• Triple-layer passivation providing enhanced environmental protection
• Inherently radiation hard and non-sensitive to electrostatic discharge

Single Zener Diodes Applications

• High-reliability aerospace systems where failure is not tolerated
• Military-grade voltage regulation circuits
• Radiation-hardened electronic environments
• Precision reference voltage generation in extreme temperatures

Single Zener Diodes Procurement Notes

Verify that the specific ordering suffix matches the required tolerance level and RoHS compliance status. Confirm the package type corresponds to the A (D-5A) MELF form factor. Ensure procurement channels are authorized for military-qualified components subject to export controls. Check current availability as supply may be restricted.

Single Zener Diodes Selection Notes

Select this part when a 220V Zener voltage with ±2% tolerance is required in a surface-mount configuration. The 1.5W power rating supports steady-state operation at 25°C. Consider thermal derating curves for elevated ambient temperatures. Verify compatibility with tape-and-reel handling processes if automated assembly is utilized.

Single Zener Diodes Part Context

This component belongs to the 1N4460US through 1N4496US series of 1.5-watt glass Zener diodes. It serves as the surface-mount equivalent to traditional axial-lead JEDEC registered series. The JAN prefix denotes a specific military reliability level qualified under MIL-PRF-19500/406 standards.

Single Zener Diodes Replacement Considerations

Equivalent parts include JAN1N4990C and JANTX1N4990C. Substitutes must match the 220V nominal voltage, ±2% tolerance, and MELF surface-mount package dimensions. Verify qualification levels align with system requirements.