Metal Alloy Shunt Resistors are designed for high-current measurement with resistance from 25 μΩ to 5 mΩ. Using electron beam welding of copper and alloy strips, they deliver excellent heat dissipation, low thermal EMF, and stable continuous performance. Common uses include BMS, energy storage, automotive powertrains, and industrial equipment requiring accuracy and durability.
| Model | Package | Series | TCR (ppm/℃) | Resistance Value (mΩ) | Power Rating (W or A) | Tolerance(%) | Automotive | |
|---|---|---|---|---|---|---|---|---|
| APSRP25 | 2512 | PSRP | ±175 | 0.3 | 6W | ±0.5,±1,±2,±5 | Yes | |
| APSRP25 | 2512 | APSRP-S | ±25 | 1.5, 2.5 | 6W | ±0.5,±1,±2,±5 | Yes | |
| APSRP25 | 2512 | APSRP25 | ±225 | 0.4 | 6W | ±0.5,±1,±2,±5 | Yes | |
| PSRP27 | 2726 | PSRP-T | ±50 | 5 | 3W | ±0.5,±1,±2,±5 | No | |
| PSRP27 | 2726 | PSRP-T | ±50 | 4 | 4W | ±0.5,±1,±2,±5 | No | |
| PSRP27 | 2726 | PSRP-T | ±50 | 3 | 5W | ±0.5,±1,±2,±5 | No | |
| PSRP27 | 2726 | PSRP-T | ±50 | 2 | 6W | ±0.5,±1,±2,±5 | No | |
| PSRP27 | 2726 | PSRP-T | ±75 | 1 | 7W | ±0.5,±1,±2,±5 | No | |
| PSRP27 | 2726 | PSRP-T | ±75 | 0.7 | 8W | ±0.5,±1,±2,±5 | No | |
| PSRP27 | 2726 | PSRP-T | ±75 | 0.5 | 9W | ±0.5,±1,±2,±5 | No | |
| PSRP27 | 2726 | PSRP-T | ±75 | 0.3 | 11W | ±0.5,±1,±2,±5 | No | |
| PSRP27 | 2726 | PSRP-T | ±75 | 0.2 | 12W | ±0.5,±1,±2,±5 | No | |
| APSRP27 | 2726 | APSRP-T | ±50 | 5 | 3W | ±0.5,±1,±2,±5 | Yes | |
| APSRP27 | 2726 | APSRP-T | ±50 | 4 | 4W | ±0.5,±1,±2,±5 | Yes | |
| APSRP27 | 2726 | APSRP-T | ±50 | 3 | 5W | ±0.5,±1,±2,±5 | Yes | |
| APSRP27 | 2726 | APSRP-T | ±50 | 2 | 6W | ±0.5,±1,±2,±5 | Yes | |
| APSRP27 | 2726 | APSRP-T | ±75 | 1 | 7W | ±0.5,±1,±2,±5 | Yes | |
| APSRP27 | 2726 | APSRP-T | ±75 | 0.7 | 8W | ±0.5,±1,±2,±5 | Yes |
The design of the sampling column achieves precise current sampling by carefully planning the structure and position to ensure measurement accuracy. Electromagnetic interference is reduced by using shielding structures or materials, which enhances signal quality. Standardized interfaces are used for easy installation and connection, improving system integration and reliability. Heat dissipation is effectively managed through the use of thermal conductive materials or special heat dissipation structures, thus improving the long-term stability and service life of the shunt.
The precision alloy current sensing shunt resistors achieve stable operation under complex conditions with high reliability, reducing maintenance costs and increasing user trust. With their high overload capacity, they can withstand large current surges, enhancing system flexibility and extending equipment life. Thanks to their high precision, they enable accurate measurement and control, meeting stringent industry standards. As a result, they demonstrate significant advantages in ensuring efficient and stable system operation, reducing overall costs, and enhancing market competitiveness.
The precision alloy current shunt resistors feature a wide temperature range, ensuring stable performance in complex environments such as high and low temperatures. This not only reduces the limitations of application scenarios but also minimizes measurement errors and extends service life. Additionally, the non-inductive design, with inductance less than 3 nanohenries, effectively reduces electromagnetic interference, improves electronic system compatibility, and ensures measurement accuracy in high-frequency circuits, thereby expanding the scope of applications.
The precision metal alloy current sense shunt resistors have a low thermoelectric potential (< 0.5μV/°C), which not only significantly reduces measurement errors caused by temperature changes in fields such as scientific research experiments and high-end electronic equipment manufacturing, ensuring measurement accuracy, but also provides stable signal output during temperature fluctuations or device heating, reducing the risk of system failures. At the same time, their low sensitivity to temperature changes expands the range of applications and enhances the adaptability and versatility of the equipment in various environments.
For example: Electrode Fully Nickel-Tin Plated. The precision alloy current sensing resistors (shunts) feature electrodes fully nickel-tin plated, which reduces contact resistance and minimizes energy loss, enhancing overall performance. The dense protective coating improves corrosion resistance and extends service life. With excellent solderability, it ensures welding quality and improves the reliability of circuit connections. It also enhances the appearance of the electrode, elevating the product's quality perception.
The precision alloy current sensing DC shunt resistors use NTC temperature sensors to monitor temperature in real time. This not only corrects measurement results and reduces errors caused by temperature fluctuations to improve measurement accuracy, providing reliable data for high-precision applications such as scientific instruments, but also enhances output stability through compensation mechanisms, reducing the risk of system failures. Additionally, it expands the environmental adaptability, broadens application scenarios, and optimizes the collaborative effect with other components, thereby improving overall system efficiency and competitiveness.
Prosemi Technology, as a leading company in the field of precision current sensing components, is dedicated to providing customers with high-performance and high-reliability solutions. Our precision alloy current-sensing resistors, including SMD current sense chip resistors and shunt resistors, are designed for a variety of applications, helping your products achieve accurate current detection and efficient energy management.
Order your Ultra-thin Current Sense Resistors today and benefit from compact design, high accuracy, fast delivery, and expert support.
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