The following is a comprehensive introduction to Vishay's resistor products, covering its core technology, product line layout, typical applications, and industry status:
1、 Core Technologies and Product Lines
Weishi resistor products are known for their diverse technical routes and high reliability, covering a wide range of needs from traditional wire wound resistors to high-frequency thin film resistors:
Thin film resistor
High frequency performance: The CHA series thin-film chip resistors have passed AECQ200 certification and are packaged in a compact 02016 package (size only 0.2mm × 0.1mm), supporting high-frequency applications up to 70 GHz. The Z/R curve is close to the ideal resistance characteristics, making them suitable for automotive ADAS, LiDAR, and satellite communication systems.
High precision: The PEP series thin film patch resistors provide a tolerance of ± 0.05%, with a noise figure below 35 dB and a working temperature range of 55 ℃ to+155 ℃. They are suitable for precision instruments and defense avionics systems.
Wire wound resistor
Anti pulse capability: The AC series axial cement winding resistor has added SMD pin bending options (such as AC05 WSZ), supporting a pulse load of 5 kW within 1 μ s, with a resistance range of 0.10 Ω to 10 k Ω, suitable for scenarios such as automotive pre charging and industrial surge suppression.
High temperature resistant design: The silicone cement coating can withstand extreme temperatures from 55 ℃ to+250 ℃ and has passed UL 94 V0 flame retardant certification.
Thick film power resistor
High energy processing: The ISOA200 series thick film resistors are packaged in SOT227 and support 200W power dissipation and 140J/0.1s pulse energy. They can be optionally equipped with NTC thermistors and phase change heat dissipation materials (PCTIM) to simplify the thermal management design of automotive and industrial systems.
Enhanced pulse protection: The LTO 150H thick film resistor has a pulse absorption capacity of 75J/0.1s, and is packaged in TO247 with a low thermal resistance of 0.87 ℃/W. It is suitable for electric vehicle chargers and industrial motor drives.
Other technologies
Metal foil resistor: Bulk Metal ® Coil technology achieves ultra-high precision of ± 0.001%, with TCR as low as ± 0.2 ppm/° C (such as VHP100 series), suitable for high-precision scenarios such as metrology calibration.
Varistors and Thermistors: Provide overvoltage protection and temperature monitoring functions, covering automotive, industrial, and consumer electronics needs.
2、 Core application areas
Weishi resistors, with their performance advantages, are widely used in the following fields:
Automotive Electronics
Current detection resistor for power battery management (BMS) (such as 0.5m Ω high-precision device);
Pre charging and discharging resistors for car chargers and 48V grid (such as LTO 150H).
Industry and Energy
Braking resistor of frequency converter, current limiting resistor of welding machine (such as aluminum shell packaging model);
Voltage division and filtering circuits for photovoltaic inverters and energy storage systems.
Communication and National Defense
5G base station RF matching resistor (such as CHA series);
Anti radiation reinforced resistors for satellite communication equipment and navigation systems.
Consumer Electronics
Surge suppression of power adapters (such as cement resistors);
Power management module for smart home appliances.
3、 Technical advantages and certification
High reliability and certification
Multiple series of products have passed AECQ200 (automotive specification) and MILPRF55342G (military) certifications, meeting the requirements of harsh environments.
Compliant with RoHS and halogen-free standards, and certified by quality management systems such as ISO 9001 and IATF 16949.
Innovation in heat dissipation and packaging
Adopting designs such as bare aluminum substrate and clip on TO247 packaging to optimize heat dissipation efficiency (such as ISOA200, LTO 150H).
Surface mount pin bending technology (WSZ option) simplifies the PCB assembly process and reduces costs.
Customized services
Provide customized options for resistance, packaging, and heat dissipation solutions (such as integrated NTC thermistors) to meet specific application requirements.
4、 Market position and industry contribution
Global leader: Weishi is the world's largest manufacturer of wire wound resistors and thin-film surface mount resistors, with products covering core markets such as automotive, industrial, aerospace, etc.
Technical benchmark: Participated in the development of multiple international standards (such as MILPRF55342G) and continuously promoted innovation in high-frequency, high-power, and miniaturization technologies.
Sustainable Manufacturing: Practicing green production, passing ISO 14064 environmental management system certification, promoting lead-free processes and circular economy.
Weishi Resistance focuses on technological innovation and has become a benchmark in the field of electronic circuit protection and energy management through a diversified product line (thin film, wire winding, thick film, etc.) and strict quality control system. Its products have shown particularly outstanding performance in emerging fields such as automotive electrification, industrial automation, and 5G communication. For specific model parameters or procurement information, please refer to their official website or agent page.
