Precision resistors, as the fundamental components of electronic systems, have a direct impact on the overall performance of the equipment due to their accuracy, temperature drift, and long-term stability. The current global pattern of precision resistor brands can be divided into three categories based on regional technical characteristics:
1、 International leading brands (mainly American and Japanese brands)
Vishay (USA): One of the world's largest manufacturers of discrete semiconductors and passive components, thin film resistors, chip resistors, and network resistors are known for their high reliability and wide temperature adaptability, particularly in automotive electronics such as ADAS systems and electronic control units, which hold a core share.
KOA (Japan): Specializes in metal film resistors, with ultra-low noise and long-term stability, suitable for ultra precision scenarios such as medical equipment (such as electrocardiogram monitors) and aerospace equipment.
Susumu (Japan): Known for high-precision wire wound resistors, suitable for high-power demand fields such as power management and industrial automation, with a tolerance accuracy of ± 0.01%.
Bourns (USA): Provides automotive grade precision resistors that comply with AECQ200 standards and are widely used in safety systems such as airbag controllers.
Panasonic (Japan): The product line covers thin film to thick film resistors, suitable for consumer electronics and industrial equipment, emphasizing cost-effectiveness and miniaturized packaging.
2、 Leading Taiwanese enterprise (focusing on alloy and current detection)
Viking: Leading the world in thin film technology, achieving a tolerance of ± 0.01% and a temperature drift of ± 2 ppm/℃. Its CS series automotive current detection resistors have passed AECQ200 certification and are used in battery management systems (BMS).
Yageo (Guoju): Global leader in surface mount resistors, PE/PA series automotive grade alloy resistors support wide temperature operation from 55 ℃ to 170 ℃, suitable for motor drive and charging station circuits.
Walsin: A representative of medical grade precision resistors, the MS series chip splitter has an accuracy of 0.02% and is used in monitors and imaging equipment.
Ralec: Specialized in metal alloy current detection resistors, LR/LRS series four terminal structure reduces inductance, suitable for frequency converters and servo drives.
3、 Representative manufacturers in Chinese Mainland (technology catch-up and scene adaptation)
Junwei Electronics (Huade): a leading domestic current detection resistor with a global market share of 7.86% in 2023. Its laminated bonding technology enhances the resistance to sulfurization and enters the supply chains of BYD and NIO.
FH (Fenghua High Tech): MF/MS alloy resistors cover 0201~2512 packages, AMF series has been certified by automotive regulations and is used for in car navigation and ECU.
Shengleicheng (Jiangxi): Unique uranium film technology with UPR resistance accuracy of ± 0.01% and temperature drift of ± 1 ppm/℃, adopted by Fluke and SANWA multimeters.
High end field: Japanese and American companies (Vishay, KOA) dominate ultra precision scenarios (± 0.01% accuracy, 5ppm temperature drift);
Vehicle regulations and industry: Taiwan manufacturers (Viking, Yageo) have outstanding cost-effectiveness in alloy resistors;
Domestic substitution: Junwei and Fenghua focus on current detection, while Shenglei City breaks through the metal uranium film process and gradually enters the high-end instrument chain.
The current industry trend is towards high voltage resistance (such as electric vehicle 800V platform), miniaturization (01005 packaging), and intelligent (embedded sensing) resistors, and the technological barriers are continuously increasing.