1N5073

Single Zener Diodes Overview

The Microchip Technology 1N5073 is a glass-encapsulated Zener diode designed for voltage regulation applications. It features an axial leaded package suitable for through-hole mounting. The device provides a nominal Zener voltage of 18 V with a tolerance of ±5%. It is rated for a maximum power dissipation of 3 W, allowing it to handle significant current levels in series regulator circuits. The component operates within a standard temperature range and utilizes a robust glass construction to ensure reliability under various electrical stress conditions.

Single Zener Diodes Feature Summary

• Glass encapsulation for enhanced durability and environmental resistance
• Axial lead configuration for reliable through-hole PCB integration
• Stable voltage regulation at 18 V nominal potential
• High power handling capability up to 3 W

Single Zener Diodes Applications

• Series voltage regulator circuits
• Overvoltage protection stages
• Reference voltage generation in analog systems

Single Zener Diodes Procurement Notes

Verify the manufacturer designation carefully, as historical production of this part number has involved multiple entities including Microsemi and Microchip Technology. Confirm the specific datasheet version and marking codes to ensure compatibility with existing designs. Check for RoHS compliance status if required by modern manufacturing standards, as older revisions may differ. Ensure the axial lead form factor matches the target printed circuit board layout requirements.

Single Zener Diodes Selection Notes

Select this component when a stable 18 V reference is required in high-power discrete applications. The 3 W rating allows for substantial current draw compared to smaller signal diodes. Consider the thermal management requirements associated with axial packages in enclosed spaces. Verify that the ±5% tolerance aligns with the precision needs of the target voltage regulation loop.

Single Zener Diodes Part Context

The 1N5073 belongs to the family of standard Zener diodes used for basic voltage clamping and regulation. Historically produced by Microsemi Corporation before its acquisition by Microchip Technology, the part retains its legacy numbering. It serves as a fundamental discrete semiconductor solution for power supplies where integrated regulators are unsuitable or cost-prohibitive.

Single Zener Diodes Replacement Considerations

Equivalent parts include other 18 V 3 W axial Zener diodes from manufacturers such as Vishay or ON Semiconductor. Verify pinout compatibility and thermal characteristics when substituting. Ensure the replacement maintains the same glass encapsulation type if environmental ruggedness is critical.