What are the KOA resistor series?

KOA Resistance Series Full Analysis: Innovative Solutions from High Precision to High Voltage Applications
 
As a key foundational component in the field of electronic components, the performance of resistors directly determines the stability and reliability of circuits. Japan KOA Corporation, with its profound technological accumulation, has launched a series of innovative resistor products for different industrial scenarios, covering a wide range of needs from automotive electronics to aerospace, from precision instruments to high-voltage power supplies. The following provides a comprehensive analysis of the technical characteristics and application scenarios of KOA's core resistor series:
 
1、 High precision and stability series: escorting critical circuits
 
1. RN73R high-precision thin film resistor
RN73R represents a comprehensive upgrade of the RN73 series, utilizing high-precision thin film technology to significantly enhance its resistance to electrolytic corrosion and long-term stability. In medical instruments and precision measuring equipment, the almost negligible temperature drift (TCR) ensures the accuracy of signal acquisition.
 
 
2. RN73H resistance to harsh environments
 
Specially designed for automotive engine control units and aerospace equipment, this series adds multiple layers of internal protection structure on the basis of ultra-thin film, enabling it to maintain extremely high precision and excellent moisture resistance in high temperature and high humidity environments, avoiding circuit failure caused by environmental changes.
 
3. RS73 thick film precision resistor
 
Based on thick film technology, this series exhibits outstanding long-term stability and is particularly suitable for scenarios such as automotive sensors and industrial PLC voltage detection modules that require anti-static (ESD) protection, ensuring that equipment parameters do not drift even after years of use.
 
2、 High power and pulse resistant series: breaking through the bottleneck of miniaturization design
1. SG73P pulse resistant power resistor
Under the same 1206 package size, the pulse withstand capability of SG73P is 7 times that of ordinary resistors, and the power density is improved through special fine-tuning processes. This feature makes it an ideal choice for power surge protection and motor drive circuits, as designers can improve system reliability without changing the PCB layout.
 
 
2. WK73R wide terminal thick film resistor
The innovative 0612 chip design combined with a wide terminal structure provides up to 6 times higher power density than conventional 1206 resistors. Its advantages lie in:
 
Enhance heat dissipation efficiency and reduce the demand for circuit board heat dissipation area
Strengthen the mechanical strength of the terminal to prevent vibration fracture
Relieve thermal expansion stress, suitable for high-density in vehicle electronic systems.
 
 
3、 High Voltage and Special Applications Series: Addressing Industry Pain Points
 
1. HV73 (V) high voltage resistor
For high-voltage scenarios such as power modules and medical X-ray equipment, this series uses special coating and insulation fine-tuning technology to withstand up to 3kV voltage (2512 package), with an upper working temperature limit of+155 ° C, ensuring safe isolation in key equipment such as CT scanner high-voltage generators.