JANS1N4490US

Single Zener Diodes Overview

The JANS1N4490US is a hermetically sealed single Zener diode manufactured by Microchip Technology. It features a nominal Zener voltage of 110 V with a tight tolerance of 5%. The device operates in the Through-Hole D-5A-2 package and dissipates up to 1.5 W. Key electrical parameters include a Zener impedance of 300 Ohms, a test current of 2.3 mA, and a maximum reverse leakage current of 250 nA. It supports a forward current of 1 A and maintains functionality across an extended temperature range from -65°C to +175°C.

Single Zener Diodes Feature Summary

• Hermetically sealed construction designed for high-reliability environments
• Single configuration optimized for precision voltage regulation applications
• Extended thermal stability suitable for extreme operational conditions

Single Zener Diodes Applications

• Military aerospace electronic systems requiring radiation hardness
• Spacecraft power supply voltage reference circuits
• High-reliability defense instrumentation protection stages

Single Zener Diodes Procurement Notes

Verify component authenticity through authorized Microchip channels due to strict military specifications. Confirm specific lot traceability and screening levels required for your mission profile. Ensure packaging integrity remains uncompromised during handling to preserve hermetic seal performance. Validate compliance with applicable quality standards before integration into critical hardware assemblies.

Single Zener Diodes Selection Notes

Select this component when precise high-voltage regulation is required in harsh environments. The D-5A-2 package provides robust mechanical mounting for vibration-prone applications. Consider the 1.5 W power dissipation capability for thermal management planning. Verify that the 110 V breakdown voltage aligns with system requirements without exceeding safe operating limits.

Single Zener Diodes Part Context

This part belongs to the JAN series of hermetically sealed semiconductors intended for military and aerospace use. It shares functional similarities with commercial variants but offers superior environmental resistance. The US suffix typically denotes specific packaging or screening configurations within the manufacturer's catalog hierarchy.

Single Zener Diodes Replacement Considerations

Direct substitutes include JAN1N4490DUS and JAN1N4490CUS/TR for surface mount alternatives. Verify pin compatibility and thermal characteristics before substitution. Commercial equivalents lack hermetic sealing and may not meet rigorous environmental standards.