High-performance choice: HoFL3T shunt, upgraded current sensing version

author: Milliohm Electronics

2025-12-15

I. Application Principles: The Core of Precise Detection

The HoFL3T series shunts operate based on Ohm's law. When current flows through the shunt, a voltage drop proportional to the current is generated across its terminals. By measuring this voltage drop and combining it with the known resistance of the shunt itself, the magnitude of the detected current can be accurately calculated.

II. Superior performance forms the foundation of reliability.

① The HoFL3T shunt uses a precision alloy material, which endows it with extremely high stability, maintaining stable performance under various complex operating conditions and providing a solid guarantee for the accuracy of current detection.
② The HoFL3T shunt employs the most advanced electron beam welding technology currently available. Compared to the high-frequency welding process of the FL2 series shunts, electron beam welding provides a more precise connection between the electrodes and the resistor body (shunt), effectively optimizing the heat dissipation problem between the electrodes and the resistor body.
③ The HoFL3T series shunts are highly accurate, reliable, have high overload capacity, high stability, a wide operating temperature range, and a non-inductive design, accurately and stably reflecting current changes. Furthermore, it features low thermoelectric potential and low inductance, effectively reducing interference factors in the current detection process and further improving detection accuracy.

III. Diverse specifications to meet diverse needs

The HoFL3T shunt offers a wide range of sizes and supports custom design based on provided drawings, meeting the installation and usage needs of various scenarios. Whether equipped with 2-M5 or 2-M3 crimp nuts, or with integrated PCBA nuts, its design flexibility and ease of assembly are evident.

Furthermore, the standard HoFL3T shunt series is compatible with the FL2 series package size, allowing it to completely replace the FL2 series and significantly improving heat dissipation.

IV. Wide application, empowering multi-domain development

The HoFL3T shunt, with its superior performance and diverse specifications, has a wide range of applications, suitable for various equipment and systems requiring precise current detection. It provides strong support for the normal operation of equipment in multiple fields such as industrial control, new energy, and power electronics.

① Industrial Automation Production Lines: The FL3T shunt can be installed in the motor drive circuit to monitor the motor current in real time. Once abnormal current fluctuations occur, the control system can respond promptly, preventing motor damage due to overload or other current problems, ensuring the continuity and efficiency of the production line. For example, in automotive manufacturing production lines, monitoring the current of robotic arm motors using the FL3T shunt can promptly detect potential faults, enabling early maintenance and reducing downtime.
② New Energy Vehicle Manufacturing and Testing: In the battery management system of new energy vehicles, the FL3T shunt can accurately measure the current changes during battery charging and discharging, feeding the data back to the battery management system for precise control and protection of the battery. This prevents overcharging and over-discharging, improving battery safety and lifespan.
③ Power System Monitoring: In substations, distribution cabinets, and other equipment within power systems, the FL3T shunt is used to monitor the current in transmission lines and equipment. Its high-precision current detection performance provides reliable data for power dispatching and equipment operation status assessment. By monitoring bus current, the load condition of the power system can be determined, power resources can be allocated rationally, ensuring stable power supply and improving power quality.
④ Power Electronics: In power electronic equipment such as inverters, charging piles, and rectifiers, it can accurately detect current changes, providing crucial information for equipment control and protection, ensuring safe and efficient equipment operation.

V. Conclusion

Shenzhen Milliohm Electronics Co., Ltd. has passed numerous international authoritative certifications, including IATF16949 and ISO9001 quality management system certifications, as well as RoHS and REACH environmental certifications, fully demonstrating its strength in quality and environmental protection, giving users greater peace of mind. The HoFL3T shunt, with its reliable manufacturing process, wide range of applications, superior performance, and clearly defined technical specifications, has become a leader in the current sensing field.

If you are currently designing circuits or are already using the FL2 series shunts, consider choosing Haoou Electronics' FL3T series shunts. They will bring better temperature rise performance and more stable performance to your system, helping your more reliable and high-end products stand out in the market.

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