55659

Overview

The Bourns Inc. 55659 is a board-mount current transformer designed for single-phase applications. It features a split-core construction with a rectangular window, facilitating installation on existing busbars or cables without circuit interruption. The component provides electrical isolation between the primary conductor and secondary measurement circuits. Key specifications include an inductance (LI) of 67 H with a tolerance of +/-40%. This design supports accurate current sensing in compact electronic assemblies.

Feature Summary

• Split-core architecture enables non-intrusive mounting on conductors
• Provides galvanic isolation for safe secondary signal processing
• Rectangular window geometry accommodates standard busbar dimensions

Applications

• Current monitoring in power supply units
• Energy metering systems
• Industrial control equipment feedback loops

Procurement Notes

Verify the specific datasheet version to confirm mechanical dimensions and winding configuration match your PCB layout requirements. Ensure that the LI tolerance aligns with your system's accuracy needs. Confirm RoHS compliance status through official manufacturer documentation before finalizing procurement orders.

Selection Notes

Select this component when non-invasive current sensing is required on fixed busbars. Evaluate the window size against the physical diameter of the primary conductor. Consider the inductance value relative to the burden resistor and operating frequency to ensure adequate signal fidelity for downstream analog-to-digital conversion stages.

Part Context

This part belongs to Bourns' series of board-mount current transformers. These components are engineered for integration into printed circuit boards where space efficiency and reliable magnetic coupling are critical. The product line typically serves industries requiring precise current feedback for protection and regulation purposes.

Replacement Considerations

Consult official Bourns substitution guides for verified alternatives. Generic replacements may differ in core material, window shape, or inductance characteristics, potentially affecting circuit performance. Do not assume interchangeability without validating electrical parameters against the original design specifications.