JAN1N4956CUS/TR

Single Zener Diodes Overview

The JAN1N4956CUS/TR is a military-qualified, surface-mount Zener voltage regulator manufactured by Microchip Technology. It features a hermetically sealed void-less glass package with an internal metallurgical bond and triple-layer passivation. The device provides an 8.2V nominal Zener voltage with a 2% tolerance level indicated by the 'C' suffix. Qualified per MIL-PRF-19500/406, it operates within a junction temperature range of -65°C to +175°C and dissipates up to 1.5W at 25°C ambient.

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
• Non-sensitive to electrostatic discharge (ESD) per MIL-STD-750 method 1020

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 qualification level and tolerance. Confirm RoHS compliance status as this variant may be non-compliant depending on the exact suffix configuration. Ensure the tape and reel packaging aligns with EIA-481-B standards if automated assembly is planned. Cross-reference the datasheet revision to confirm current electrical characteristics before finalizing procurement specifications.

Single Zener Diodes Selection Notes

Select this component when a surface-mount equivalent to the axial 1N4956 series is required for space-constrained designs. The 2% tolerance offers tighter voltage accuracy than standard 5% versions. Consider the 1.5W power dissipation capability and thermal resistance values for heat management. Verify compatibility with the D-5A MELF footprint during PCB layout.

Single Zener Diodes Part Context

This part belongs to the 1N4460US through 1N4496US series of 1.5-watt glass Zener diodes. It serves as the surface-mount counterpart to traditional axial-lead JEDEC registered series. The product line includes various voltage selections from 3.3V to 200V, catering to diverse regulation needs in harsh environments.

Single Zener Diodes Replacement Considerations

Direct parameter-equivalent replacements include the commercial grade 1N4956CUS/TR or the JAN1N4956CUS without the tape and reel suffix. For axial lead requirements, the 1N4956 series is the functional equivalent. Verify pinout and package dimensions match the D-5A MELF form factor.