1N3994

Single Zener Diodes Overview

The Microchip Technology 1N3994 is a small signal switching diode designed for general-purpose applications. It utilizes a DO-35-2 through-hole package and operates within a temperature range of -65°C to +175°C. Key electrical specifications include a maximum repetitive peak reverse voltage of 75 V, a forward current rating of 200 mA, and a maximum surge current capacity of 500 mA. The device features a low maximum reverse leakage current of 10 nA and a typical forward voltage drop of 1 V at the rated current.

Single Zener Diodes Feature Summary

• Capable of handling high surge currents for transient protection in switching circuits
• Operates reliably across an extended industrial temperature range up to 175°C
• Provides fast switching performance with minimal reverse leakage current

Single Zener Diodes Applications

• General purpose rectification in electronic circuits
• Signal clamping and protection stages
• Computer logic interface circuits

Single Zener Diodes Procurement Notes

Verify the specific manufacturing date code and lot traceability upon order confirmation. Confirm that the delivered units match the exact Microchip Technology part number 1N3994. Ensure compliance with relevant environmental regulations applicable to your region before final integration into the design.

Single Zener Diodes Selection Notes

Select this component when a robust silicon switching diode is required for through-hole assembly. It serves as a direct replacement for legacy designs requiring a 75 V rating. Consider its thermal characteristics if operating near the upper temperature limits.

Single Zener Diodes Part Context

This component belongs to the standard MIL-spec derived small signal diode family produced by Microchip Technology. It is widely used in industrial and commercial electronics where reliable switching and moderate power handling are necessary. The DO-35 package ensures compatibility with standard automated insertion equipment.

Single Zener Diodes Replacement Considerations

Cross-reference with other manufacturers' 1N3994 equivalents such as those from ON Semiconductor or Vishay. Verify pinout compatibility and ensure that alternative parts meet the same 75 V reverse voltage and 200 mA forward current requirements.