1N4955E3

Overview

The 1N4955E3 is a Zener diode manufactured by Microchip Technology, designed for voltage regulation applications. It features a nominal Zener voltage of 7.5 V with a 5% tolerance and operates at a test current of 175 mA. The device supports a maximum power dissipation of 5 W and maintains a low reverse leakage current of 100 uA. Its Zener impedance is specified at 1.5 Ohms. The component utilizes an axial leaded package suitable for through-hole mounting and functions within an extended temperature range from -65 C to +175 C.

Feature Summary

• Provides stable voltage regulation with a nominal 7.5 V output.
• Supports high power dissipation up to 5 W for robust performance.
• Operates reliably across an extended industrial temperature range.

Applications

• Voltage regulation circuits
• Overvoltage protection systems
• Reference voltage sources

Procurement Notes

Verify the specific suffix E3 confirms lead-free compliance when sourcing. Confirm the manufacturer designation matches Microchip Technology specifications. Ensure the axial package style aligns with your printed circuit board layout requirements. Validate that the 5 W power rating meets your thermal management design constraints before finalizing procurement.

Selection Notes

Select this component when a precise 7.5 V reference is required in through-hole designs. The 5 W power rating allows handling higher currents compared to standard small-signal variants. Verify that the 175 mA test current suits your biasing network. Consider the 1.5 Ohm impedance for stability needs in sensitive analog sections.

Part Context

This part belongs to the standard Zener diode family produced by Microchip Technology. It serves as a fundamental discrete semiconductor component for electronic circuits requiring reliable voltage clamping or regulation. The product line supports various industries including industrial and automotive sectors where durability is essential.

Replacement Considerations

Cross-reference with JAN1N4955 for military-grade equivalents. Check JANTX1N4955 for enhanced testing specifications. Ensure any substitute maintains the 7.5 V Zener voltage and 5 W power dissipation limits to preserve circuit functionality.