1N4954USE3/TR

Overview

The 1N4954USE3/TR is a Zener diode manufactured by Microchip Technology, designed for surface-mount applications. It features a nominal Zener voltage of 6.8 V and a maximum power dissipation of 5 W. The device operates with a test current of 175 mA and maintains a Zener impedance of 40 Ohms. It utilizes the SQ SMT package configuration and supports an extended operating temperature range from -65 °C to +175 °C.

Feature Summary

• Provides stable voltage regulation at a nominal 6.8 V potential
• Capable of handling high power dissipation up to 5 W
• Engineered for reliable operation across extreme temperature environments

Applications

• Voltage reference circuits requiring high stability
• Overvoltage protection in industrial systems
• Power supply regulation modules

Procurement Notes

Verify component authenticity through authorized Microchip distributors or certified suppliers. Confirm that the part matches the specific SQ SMT package and lead-free specifications. Request official datasheets and compliance documentation to ensure alignment with project requirements before finalizing acquisition.

Selection Notes

Select this component when a robust 5 W Zener diode is required for surface-mount assembly. Ensure the circuit design accommodates the 175 mA test current and 40 Ohm impedance characteristics. Verify that the operating environment falls within the specified -65 °C to +175 °C thermal limits for optimal performance.

Part Context

This component belongs to the 1N4954 series of high-power Zener diodes produced by Microchip Technology. It represents the surface-mount variant (USE3) of the traditional axial-lead 1N4954, offering equivalent electrical performance in a compact form factor suitable for modern automated PCB assembly processes.

Replacement Considerations

Direct substitutes include other 1N4954 series variants such as JAN1N4954 or JANTXV1N4954US, provided they match the required package type and voltage tolerance specifications.