1N5339B

Single Zener Diodes Overview

The Littelfuse Inc. 1N5339B is a single Zener diode designed as a termination device for submersible pump applications. It provides a 5 W ground-check termination between the ground-check wire and ground. The component features a silicon unidirectional voltage regulator structure with a nominal Zener voltage of 5.6 V. It utilizes a Surmetic 40 package, offering a robust and compact form factor suitable for demanding environments. The device includes wire leads to simplify installation processes.

Single Zener Diodes Feature Summary

• Provides 5 W ground-check termination functionality
• Robust and compact design for submersible pumps
• Wire lead construction simplifies installation

Single Zener Diodes Applications

• Submersible pump ground-check circuits
• Ground-check wire termination assemblies
• Voltage regulation in pump control systems

Single Zener Diodes Procurement Notes

Verify manufacturer source carefully as multiple entities list this part. Confirm RoHS compliance status as some records indicate non-compliance. Check current availability since onsemi lists it as obsolete with direct substitutes available. Ensure the specific Littelfuse datasheet matches the required electrical characteristics for your application.

Single Zener Diodes Selection Notes

Select this component specifically for its integrated ground-check termination capability in submersible pump systems. The 5.6 V rating and 5 W power dissipation define its operational limits. Consider the Surmetic 40 package dimensions for PCB or terminal board layout. Verify that the wire lead configuration meets your assembly requirements compared to surface-mount alternatives.

Single Zener Diodes Part Context

This part belongs to the Littelfuse termination assemblies series, distinct from standard discrete Zener diodes. While similar part numbers exist across manufacturers like Microsemi and NTE, the Littelfuse version is specifically engineered as a termination device rather than a general-purpose regulator. It serves as a replacement for older models like the 1N4553B in specific industrial contexts.

Single Zener Diodes Replacement Considerations

Direct substitute: 1N5339BG by onsemi. Verify pinout and thermal characteristics match before substitution.