JANTX1N4991CUS/TR

Single Zener Diodes Overview

The JANTX1N4991CUS/TR is a Zener diode manufactured by Microchip Technology, designed for surface-mount applications. It features a nominal Zener voltage of 240V with a test current of 5mA and a maximum power dissipation of 0.4W. The device utilizes an SQ-MELF package and supports an operating temperature range from -65°C to +175°C. This component is classified as a voltage regulator diode suitable for high-reliability environments.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation at high potential levels
• Engineered for operation in extreme thermal conditions
• Constructed in a compact surface-mount MELF form factor

Single Zener Diodes Applications

• High-voltage reference circuits
• Overvoltage protection systems
• Military-grade electronic assemblies

Single Zener Diodes Procurement Notes

Verify the specific suffix requirements against your design specifications before ordering. Confirm that the SQ-MELF footprint matches your PCB layout constraints. Ensure that the procurement channel provides traceability documentation required for qualified components. Check current availability status as supply may be restricted.

Single Zener Diodes Selection Notes

Select this component when a precise 240V regulation point is required in a ruggedized environment. Consider the 0.4W power limit and thermal management needs during circuit design. Evaluate the -65°C to +175°C range against your operational extremes. Compare impedance characteristics if tight voltage stability under varying currents is critical.

Single Zener Diodes Part Context

This part belongs to the JANTX series of Zener diodes, which are characterized by enhanced reliability standards compared to commercial grades. The series is widely utilized in aerospace and defense electronics where consistent performance under stress is mandatory. The SQ-MELF packaging allows for automated assembly while maintaining robust physical integrity.

Single Zener Diodes Replacement Considerations

Direct substitutes include other JANTX series variants with matching voltage ratings. Verify pinout compatibility and thermal resistance values when considering alternative manufacturers. Ensure any replacement meets the same environmental qualification standards.