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As power electronics continue to move toward higher integration and smaller form factors, accurate current sensing on printed circuit boards has become increasingly important. Traditional current transformers are often too bulky or difficult to integrate into compact designs. This is where the LWX Miniature Current Transformer stands out.

Designed specifically for board-level applications, the LWX series provides reliable current measurement while maintaining a compact footprint, making it a practical choice for modern power monitoring systems.

Challenges of PCB-Mounted Current Sensing

PCB-mounted power monitoring presents several challenges:

• Limited board space
• Strict height and footprint requirements
• Sensitivity to electromagnetic interference
• The need for stable performance over long-term operation

Many conventional current transformers were originally designed for panel mounting or larger enclosures. When forced onto a PCB, they may introduce layout difficulties, inconsistent performance, or unnecessary mechanical stress.

Compact Design Optimized for PCB Integration

One of the key advantages of the LWX Miniature Current Transformer is its compact and low-profile structure. The reduced size allows engineers to place the transformer close to other sensing or control components without compromising board layout.

The LWX series is well suited for:

• Dense PCB layouts
• Multi-layer board designs
• Compact power modules and embedded systems

By minimizing occupied space, designers gain more flexibility when routing traces and arranging surrounding components.

Stable Electrical Performance in Board-Level Applications

In PCB-mounted environments, consistency matters. Variations in transformer performance can directly affect measurement accuracy and system reliability.

The LWX Miniature Current Transformer is designed to deliver:

• Stable transformation ratios
• Low phase error
• Repeatable performance across batches

Manufactured by Hall Magnetics, the LWX series benefits from controlled core processing and winding techniques that help ensure uniform electrical characteristics—an important factor for large-scale production and long-term operation.

Reduced Interference and Improved Signal Quality

PCB-based power monitoring systems often operate in electrically noisy environments. Switching power supplies, inverters, and motor drives can introduce significant electromagnetic interference.

Thanks to its optimized magnetic structure, the LWX Miniature Current Transformer helps maintain clean signal output, making it suitable for:

• Power meters
• Energy monitoring modules
• Industrial control boards
• Smart power devices

This contributes to more reliable data acquisition and simplifies downstream signal conditioning.

Easy Assembly and Manufacturing Compatibility

Another benefit of the LWX series is its compatibility with standard PCB assembly processes. Its mechanical design supports stable mounting and consistent alignment, reducing the risk of damage during soldering or system assembly.

For manufacturers, this means:

• Easier integration into existing designs
• Lower assembly complexity
• Improved production efficiency

These practical advantages are especially valuable in high-volume electronics manufacturing.

Typical Applications of LWX Miniature Current Transformers

The LWX Miniature Current Transformer is commonly used in:

• PCB-mounted power monitoring systems
• Smart meters and energy management devices
• Industrial automation and control equipment
• Power supplies and converters
• Embedded power electronics

As power systems continue to shrink in size while increasing in complexity, miniature current transformers like the LWX series are becoming a preferred solution.

Conclusion

For engineers and system designers working with PCB-mounted power monitoring, selecting the right current transformer is critical. The LWX Miniature Current Transformer offers a balanced combination of compact size, stable electrical performance, and practical manufacturability.

Developed by Hall Magnetics to meet the demands of modern electronics, the LWX series provides a reliable current sensing solution for applications where space, accuracy, and consistency all matter.