1N4993US

Single Zener Diodes Overview

The Microchip Technology 1N4993US is a Zener diode voltage regulator designed for surface mount applications. It features a nominal Zener voltage of 300V and operates with a test current of 4mA. The device supports a maximum forward current of 0.3A and dissipates power within its specified thermal limits. Constructed in an SQ SMT package, it provides stable voltage regulation suitable for high-voltage circuit protection and reference applications requiring compact form factors.

Single Zener Diodes Feature Summary

• Surface mount construction for automated assembly integration
• High voltage regulation capability at 300V nominal level
• Hermetically sealed voidless-glass construction for reliability

Single Zener Diodes Applications

• High voltage circuit protection
• Voltage reference circuits
• Surge suppression systems

Single Zener Diodes Procurement Notes

Verify the specific suffix designation against official Microchip documentation to confirm exact electrical tolerances and qualification levels. Ensure the ordering part number matches the required package style and performance specifications for your design. Cross-reference datasheet parameters before finalizing procurement to avoid mismatches in voltage ratings or package dimensions.

Single Zener Diodes Selection Notes

Select this component when a 300V Zener regulator is required in a surface mount footprint. Evaluate the 4mA test current requirement against your biasing network capabilities. Confirm that the SQ package dimensions fit your PCB layout constraints. Consider the thermal dissipation characteristics relative to your expected operating conditions and ambient temperature range.

Single Zener Diodes Part Context

This device belongs to the industry-recognized 1N49xx series of Zener voltage regulators. It serves as the surface mount equivalent to axial leaded versions, maintaining similar electrical characteristics while enabling modern PCB mounting techniques. The series is widely used in industrial and commercial electronics for reliable voltage clamping and regulation tasks.

Single Zener Diodes Replacement Considerations

Check for direct equivalents such as JAN1N4993US/TR which shares the same core specifications but may differ in packaging format or qualification level. Verify pinout compatibility and physical dimensions before substituting any alternative part numbers from other manufacturers.