1N4954USE3

Overview

The 1N4954USE3 is a Zener diode manufactured by Microchip Technology, designed for surface-mount applications. It features a nominal Zener voltage of 6.8 V and operates at a test current of 175 mA. The device supports a maximum power dissipation of 5 W and maintains a voltage tolerance of 5%. It functions within an extended temperature range from -65 °C to +175 °C. The component utilizes an axial leaded package configuration despite the 'USE' suffix typically indicating surface mount variants in other contexts, specifically housed in a bulk packaging format.

Feature Summary

• Provides stable voltage regulation with a nominal 6.8 V output under specified test conditions.
• Capable of handling high power dissipation up to 5 W for robust circuit protection.
• Engineered for reliable operation across extreme industrial temperature ranges.

Applications

• Voltage reference circuits requiring precise potential levels.
• Overvoltage protection stages in sensitive electronic systems.
• Clamping applications in signal processing paths.

Procurement Notes

Verify the specific package type and marking against official Microchip documentation prior to integration, as suffix variations can indicate different physical form factors or compliance standards. Confirm availability through authorized distributors, noting that certain variants may have restricted distribution channels or longer production cycles. Ensure the selected revision matches the required thermal and electrical specifications for the target environment.

Selection Notes

Select this component when a 6.8 V Zener reference is needed with high power handling capabilities. Consider the axial package constraints for PCB layout if space is limited. Evaluate the 5% tolerance against circuit requirements for precision applications. Compare against similar series parts like the 1N4955 if a slightly higher voltage reference is acceptable for the design.

Part Context

This part belongs to the standard Zener diode family produced by Microchip Technology, historically associated with Microsemi. These components are widely used in general-purpose electronics for voltage regulation and protection. The 1N4954USE3 represents a specific variant within this lineage, offering defined electrical characteristics suitable for both commercial and potentially harsher environments depending on the exact qualification level.

Replacement Considerations

Direct substitutes include other 6.8 V Zener diodes with comparable power ratings and package styles. Verify pinout compatibility and thermal resistance values when considering alternatives from different manufacturers to ensure equivalent performance in the final assembly.