As a well-known brand in the field of passive components in China, Walter resistor, with more than 40 years of manufacturing experience and stable and reliable product quality, plays an important role in the global electronic industry. When many engineers select components in circuit design, the first problem is how to find the most suitable one from Huade's huge product line. In this paper, we will systematically analyze the main series of Ward resistors to help you quickly establish the selection framework.
Before further series introduction, if you are looking for the official authorization channel of Huade Resistance, Shenzhen Shunhai Technology Co., Ltd., as a professional agent, can provide stable spot support and original technical connection. You can also conveniently query the real-time inventory and parameter price through the online platform of Huanian Shopping Mall.
1、 Alloy resistance series: the core of high current and precision detection
Alloy resistance is the most distinctive part of Huade's product line, mainly used in power management, motor drive, automotive electronics and other fields requiring accurate current detection. This type of resistor usually adopts manganese copper or nickel copper alloy as the material of resistor body, which has the characteristics of low resistance, low temperature coefficient and high power density.
HTE/HTC Series
This is the wide electrode current detection resistance mainly developed by Huade, and its obvious feature is that the bottom electrode is wide, which not only improves the heat dissipation performance, but also enhances the welding reliability during SMT mounting.
Parameter characteristics: common HTE2512 packaging products, with power up to 3W or higher, generally covering the resistance range of 0.001R to 0.2R. The temperature coefficient can be controlled within ± 50ppm/℃, with the highest accuracy up to ± 1%.
Subdivision types include HTC series designed with long electrodes and HTE-Auto series designed for automotive electronics (compliant with AEC-Q200 standards).
Application: Extremely suitable for BMS battery management system, EPS (electric power steering) of new energy vehicles and current sampling in industrial frequency converter.
Series STE
The STE series also belongs to the metal foil alloy chip resistor, which provides more diversified package size options, covering from small volume 0603 to high power 4527.
Parameter characteristics: the resistance range is usually 0.003R~0.7R, and the power varies from 0.5W to 5W. This series is widely used in consumer electronic power supply. For example, in charge management of portable equipment, such small-sized products as STE0603 can effectively save PCB space.
Material: According to the specific model, the material of resistance body may be manganese copper or nickel copper alloy to adapt to different heat dissipation and cost requirements.
MSH/PMSH Series
MSH series is another kind of common metal plate current sensing resistance of Huade, which is often described as manganese copper resistance of "pure metal process".
Parameter characteristics: Taking the 2512 package as an example, MSH series supports 1W~3W power, and the resistance value can be as low as 0.5mR, which is very suitable for detecting extreme current.
Comparison: Compared with the HTE series, the PMSH series focuses more on the universal power supply market with ultra-high cost performance, while the HTE series highlights the heat dissipation and welding advantages of wide electrodes.
HFCL/HFPL Series
For scenarios where measurement accuracy is critical, Huade has introduced HFCL and HFPL series, which use a four-terminal Kelvin structure (i.e., a four-terminal resistor).
Advantage: This design can effectively eliminate the parasitic resistance interference caused by PCB wiring, so as to realize ultra-precise measurement of extremely low resistance (milliohm level or even micro-ohm level).
Application: mainly used in high-precision laboratory power supply, medical instruments and high-end BMS solutions.
2、 Thick Film Patch Resistor Series: Preferred for General and High Resistance
In addition to alloy resistance, Huade also has a complete layout in the field of general thick film chip resistance. These resistors are mainly used for signal processing, voltage division and general circuit protection.
General-purpose thick film series
Including conventional 0201, 0402, 0603, 0805, 1206 packages, etc.
Features: Wide range of resistance values, ranging from low resistance to high resistance (even Jeou class). These products mainly meet the design requirements of conventional circuits, with excellent cost optimization.
WDR/WTR/WLR Series
Thick-film resistor series optimized for specific applications:
WDR series: focusing on ultra-low resistance and high stability, it is commonly used for precision current detection and can be used as a low-cost alternative to alloy resistance.
WTR series: enhanced high temperature resistance, suitable for high ambient temperature parts in automotive electronics and industrial control.
WLR series: with high power carrying capacity, higher rated power can be realized under the same package, meeting the requirements of miniaturization of power management module.
3、 Car gauge level and special application series
With the explosive growth of new energy vehicles, Huade specially launched the automotive resistance series certified by AEC-Q200.
Identification method: Products with "- AUTO" in the model suffix or series name are vehicle specification products.
Performance requirements: this kind of resistance is not only more strict in the temperature range (such as - 55 ℃~150 ℃), but also passes the long-term reliability tests such as vulcanization resistance and moisture resistance. It is applicable to key parts such as engine control unit, air bag system and LED lamp drive.
4、 Selection recommendations and supply chain support
With such a large number of Huade resistance series, the following logic can be followed during model selection: first confirm whether it is necessary to detect large current, if so, enter alloy resistance model selection, give priority to HTE series with high heat dissipation demand, and HFCL series for excellent accuracy; For general signal processing, select by package and power in the general thick film series.
In actual procurement, due to various types of Huade resistors and the shortage of market supply of some popular models (such as alloy resistor of 2512 package), it is very important to select reliable supply chain partners.
Shenzhen Shunhai Technology Co., Ltd., as the authorized agent of Huade Electronic, has rich stock and original technical support capabilities, and can assist engineers in completing the whole process from sample testing to batch production. At the same time, in order to facilitate engineers to quickly query parameters and compare prices, Huanian Mall provides an online product database. You can view the detailed specifications and price steps of thousands of Huade resistors including HTE2512, MSH2512 and STE series in real time.
It can be seen from the above analysis that Huade resistor accurately covers various demands from consumer electronics to automotive electronics through differentiated series division. Understanding the differences between these series is a key step in ensuring the optimum balance between circuit design performance and cost.
