Anti surge patch resistor is a key protective component widely used in scenarios that require resistance to transient voltage surges. The following are the main brand manufacturers, their technical characteristics, and application areas compiled from comprehensive search results:
1、 International brand
Japanese Rohm
Product features: Mainly composed of high-power thick film surface mount resistors and metal film resistors, with excellent high temperature resistance and reliability, suitable for industrial control, automotive electronics and other fields.
Typical applications: power management, automotive power systems, high-frequency amplifiers.
Vishay, USA
Product features: Covering multiple packaging sizes (0603~2512) and power ranges (1/8W~1.5W), with outstanding surge resistance and compliance with RoHS standards.
Typical applications: medical instruments, power supplies, automotive control boards.
Japan Advanced Industries (SUSUMU)
Product series: MRG series metal film surge resistor, using high-quality metal film material, compact size, suitable for compact space design.
Advantages: High surge resistance and fast response characteristics, suitable for overvoltage protection circuits.
2、 Taiwanese manufacturers
National Giant (YAGEO)
Technical advantages: SR series anti surge resistors comply with AECQ200 standards, with low tolerance (± 0.5%), high power bearing capacity, and excellent temperature characteristics.
Application areas: automotive electronics (headlights, power systems), servo control, power supply.
Hikari (VIKING)
Product series: SWR series anti surge resistor, with a resistance range of 1 Ω~20M Ω, package size covering 0603~2512, power of 1W~5W, suitable for high-frequency scenarios.
Features: Made of metal oxide materials, low temperature rise, fast response, widely used in medical equipment and communication networks.
EVER OHMS
Product features: CRH series high-power thick film resistors have strong temperature resistance and a wide range of resistance values, suitable for drones, smart home appliances, and industrial equipment.
3、 Domestic brands
Fenghua High Tech (FH)
Product advantages: Surge resistant thick film resistor (such as 1206 package 1 Ω± 1% model), power 1/3W, compliant with RoHS and halogen-free requirements, with high stability and mechanical strength.
Application scenarios: power systems, communication equipment, automotive electronics.
Walsin Technology
Technical features: anti sulfurization, anti surge resistance, suitable for harsh environments, optimized packaging technology, meeting the needs of the automotive industry.
Heketai (HKT)
Product positioning: High precision surge resistant thick film resistor, improved reliability through optimized heat dissipation design, mainly used in the field of industrial automation.
4、 Selection suggestions
Power and packaging: Under the same power, the volume of surge resistant resistors is usually 12 sizes larger than ordinary resistors (such as 0805 replacing 0603, which needs to be rearranged).
High frequency applications: Pay attention to the impact of parasitic inductance (35nH) on high-frequency circuits. If the operating frequency exceeds 100MHz, the impedance characteristics need to be re evaluated.
Certification standard: It is recommended to choose products that comply with the AECQ200 standard (such as the Guoju SR series) for automotive electronics.
The core brands of anti surge surface mount resistors include Guoju, Guangjie, ROHM, Weishi, Fenghua High tech, etc. When selecting, it is necessary to consider power requirements, packaging limitations, and specific scenarios (such as high reliability for automotive electronics and low drift for medical equipment). For more brand and parameter details, please refer to the manufacturer's official website or information provided by agents such as Shunhai Technology and Jiebixin Technology.