In precision circuit design, a small resistor often determines the performance and reliability of the entire system.
In the field of electronic components, Walter resistors, as experts in current sensing precision resistors, have won the favor of many well-known enterprises in the fiercely competitive market with their excellent product performance and reliability.
After years of accumulation and precipitation, the Huade electronic brands "Huade" and "Walter" have gained a good reputation among Chinese and overseas customers and have strong market influence.
Since its establishment in Taiwan in 1968, Huade Electronics has gradually developed into a professional supplier in the field of global circuit protection components.
In 2014, Junwei Factory was established in Jiangmen, Guangdong, marking the further expansion of Huade Electronics' production capacity.
Junwei Electronics, as the parent company of the Huade brand, was established in 2014 and is engaged in the design, research and development, manufacturing, and sales of precision resistors and fuses for current sensing.
Nowadays, Huade Resistors, with its strong research and development capabilities and technological accumulation, has become the core supplier of A Company's current sensing precision resistor products, and has entered the supply chain system of dozens of well-known domestic and foreign enterprises including:
- Samsung
- Xiaomi
- Lenovo
- Gree
- BYD
The Huade current sensing precision resistor series is the company's core product, characterized by low resistance, high precision, and low temperature coefficient.
These resistors typically have resistance values in the milliohm range, effectively reducing power losses in high current circuits and improving circuit efficiency.
Its accuracy can reach 1%, 0.5% or even higher, providing precise resistance values for circuits and meeting the extremely high requirements for measurement and control accuracy in application scenarios.
The Huade alloy resistor series includes multiple models, such as STE0603MW50R040F (0603 package, 0.5W, 1%, 40mR) and STE0805MW75R024F (0805 package, 0.75W, 1%, 24mR).
These alloy resistors use manganese copper alloy (MnCu) as the resistance material and are attached to ceramic substrates through special processes, exhibiting significant characteristics of low resistance, high power, and low temperature coefficient.
Taking the alloy resistor packaged in 0805 as an example, its power rating usually reaches 0.75W (3/4W), which is much higher than the 0.125W of ordinary thick film resistors of the same size.
The Huade aluminum shell resistor adopts an aluminum alloy shell design, which has good heat dissipation performance and mechanical strength.
The power level of this series of resistors ranges from 1 watt to several tens of watts, with common specifications including 1W, 3W, 5W, 10W, 20W, etc. The resistance range covers from a few ohms to several megaohms.
Aluminum casing not only effectively reduces the operating temperature of resistors, but also enhances their impact and corrosion resistance, making them suitable for use in harsh environments.
Huade low resistance thick film surface mount resistors provide a resistance range as low as 0.0005 Ω (0.5m Ω) to 0.5 Ω, with accuracy coverage of 0.5%, 1%, and 5% levels.
Its MSH series pure metal process resistors can achieve full resistance coverage (0.5m Ω~0.5 Ω), with an accuracy of ± 0.01%, suitable for high-precision scenarios such as medical equipment and precision measuring instruments.
The temperature coefficient (TCR) of these resistors is usually ± 50ppm/℃, and some products can even be as low as ± 10ppm/℃, ensuring stable resistance over a wide temperature range of 55 ℃ to+155 ℃.
Huade resistor products have multiple outstanding technical features, which enable them to maintain a leading position in market competition.
The low temperature coefficient is a major highlight of the Huade resistor. The TCR values are generally 25ppm/℃, 50ppm/℃, 75ppm/℃, 100ppm/℃, etc. Under different temperature environments, the resistance value changes very little, ensuring that the circuit performance remains stable and reliable in working environments with large temperature fluctuations.
Huade resistors also adopt special structural design to enhance product performance. For example, the wide electrode design of its thick film chip resistor enhances mechanical strength and weldability, reducing the risk of cracking caused by bending deformation.
The three-layer protective layer design (first protective layer+second protective layer+third protective layer) effectively improves heat dissipation performance and extends service life.
For the trend of miniaturization, Huade has launched the MSTJ 0201 series current detection resistor, with a size of only 0.6mm × 0.3mm and a resistance range covering 8m Ω to 40m Ω, with an accuracy of ± 1%, meeting the dual requirements of space and performance for portable devices.
Huade resistors have been widely used in multiple important fields due to their excellent performance:
In the field of automotive electronics, Huade resistors are an indispensable component of automotive electronic systems, widely used in engine control units, battery management systems, airbag systems, and electric power steering (EPS) systems.
In the battery management system of new energy vehicles, precise current monitoring of Huade resistors is crucial for battery charging and discharging control.
Its low resistance and high-precision characteristics enable precise sampling of battery current, ensuring the safety and lifespan of battery use.
At present, Huade resistor products have entered the supply chain systems of:
- Hyundai Mobis
- Leapmotor
- BYD
- CRRC
- NIO
and have achieved mass shipment.
In the field of industrial automation, Huade resistors are commonly used in industrial frequency converters, servo drives, and other equipment.
Industrial production requires extremely high precision for motor speed regulation and system control. The Huade resistor in the current sampling and feedback control process can ensure accurate equipment operation, improve production efficiency and product quality, and reduce defect rates.
In the field of consumer electronics, Huade resistors play an important role in the power management circuits of chargers for mobile phones, tablets, laptops, as well as power tools, drones, and other devices.
In the context of the popularization of fast charging technology for mobile phones, Huade alloy resistors can monitor the charging current in real time, prevent damage to equipment caused by overcurrent charging, and extend the service life of equipment.
In the field of photovoltaic energy storage, Huade Electronic products have entered the supply chain system of:
- Sunac Power
- Chint Electric
- Paineng Technology
- Zhongheng Electric
In the field of handheld gimbal and ADAS, Huade Electronic products have entered:
- DJI's supply chain system.
Huade resistor products comply with multiple international and domestic standards, such as IEC, UL certification, etc., ensuring that the products meet high standards in terms of safety and environmental protection.
In the field of automotive electronics, Huade resistors have obtained the IATF16949 quality management system certification for the automotive industry, and some products comply with the AECQ200 standard, suitable for the automotive electronics front-end market.
Huade Company strictly implements the quality management system and conducts multiple tests, including temperature resistance, moisture resistance, vibration resistance, etc., to ensure the reliability of every product.
Huade also pays attention to environmental protection. Its Junwei factory has obtained ISO 14001 certification and fully produces ROHS products to meet global market access requirements.
Huade resistors have demonstrated multiple advantages in market competition, including diversified product combinations, independent production lines, automated equipment for production lines, and high cost-effectiveness of products.
Through continuous innovation, Huade Electronics launched patch fuses and precision resistors for current detection in 2007, and the world's first plastic patch fuse in 2016, maintaining a leading position in technology.
Huade Electronics has established deep cooperative relationships with global leading communication and automotive chip companies Qualcomm and Nvidia, and has achieved bulk supply.
This indicates that Huade resistors have gained recognition from top companies in the industry for their technical capabilities and product quality.
With the increasingly strict energy efficiency requirements for electronic devices, the application prospects of low resistance and high-power alloy resistors will be even broader.
Huade resistors, with their profound accumulation in this field, are expected to play a more important role in future high-end electronic devices.
The success of Huade resistors stems from their continuous investment in technological innovation. From fast charging of smartphones, to battery management of new energy vehicles, to precise control of industrial automation, Huade resistors silently play a key role in many fields.
With the continuous development of electronic devices towards high efficiency and miniaturization, precision components with low resistance and high power such as Huade resistors will undoubtedly become an important support for the advancement of electronic technology in the future.
