1N4490

Single Zener Diodes Overview

The Microchip Technology 1N4490 is a single Zener diode designed for through-hole mounting in the D-5A-2 package. It features a nominal Zener voltage of 110 V with a 5% tolerance and a maximum power dissipation of 1.5 W. The device exhibits a Zener impedance of 300 Ohms at a test current of 2.3 mA, with a reverse leakage current of 250 nA. It supports a forward current of 1 A and maintains an operating temperature range from -65°C to +175°C.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation at high potential levels suitable for precision reference applications.
• Engineered for robust performance across extreme thermal environments extending to 175°C.
• Constructed for reliable through-hole integration into printed circuit board assemblies.

Single Zener Diodes Applications

• High-voltage reference circuits requiring stable DC potentials
• Overvoltage protection stages in industrial control systems
• Precision voltage regulation within harsh environmental conditions

Single Zener Diodes Procurement Notes

Verify component authenticity by cross-referencing the manufacturer part number with official Microchip Technology documentation. Confirm that the specific package style matches the required through-hole footprint. Ensure operational parameters align with system voltage and thermal constraints before finalizing procurement decisions.

Single Zener Diodes Selection Notes

Select this component when a stable 110 V reference is required in high-temperature environments. The 1.5 W power rating allows for significant current handling compared to lower-power variants. Verify that the 300 Ohm impedance meets the noise and stability requirements of the target application circuit design.

Single Zener Diodes Part Context

This component belongs to the standard Zener diode category manufactured by Microchip Technology. It utilizes axial lead construction housed in a glass passivated case. The device serves as a fundamental discrete semiconductor element for voltage clamping and regulation tasks in electronic systems.

Single Zener Diodes Replacement Considerations

Consult official Microchip Technology substitution guides for verified equivalent part numbers. Ensure any replacement maintains identical voltage ratings, power dissipation limits, and package dimensions to guarantee mechanical and electrical compatibility.