Anti sulfurization surface mount resistors are widely used in fields such as automotive electronics, industrial equipment, medical instruments, etc. due to their excellent stability and corrosion resistance in sulfur-containing environments. The following is a summary of the main brand manufacturers and their technical characteristics in this field:
1、 Internationally renowned brand
ROHM (ROHM)
Product series: SFR series (such as SFR01, SFR03).
Technical features: The electrode adopts special protective materials and structural design, with sulfur resistance twice that of the previous generation product, suitable for harsh environments such as car cameras and headlights. The resistance range is 1 Ω to 10M Ω, with dimensions covering 1.0mm × 0.5mm to 1.6mm × 0.8mm
Application areas: Vehicle mounted equipment, industrial control, communication base stations.
National Giant (YAGEO)
Product series: AF series.
Technical features: resistant to high temperature and low temperature drift (± 100-200ppm/℃), supports customized parameters, and has passed ISO9001 certification. The resistance accuracy reaches ± 0.5%, and the power coverage ranges from 1/20W to 1W
Application areas: industrial control, automotive electronics, communication equipment.
Product series: SF series.
Technical features: Using special materials and processes, it can automatically release hydrogen sulfide gas, with a resistance range of 1 Ω~10M Ω and an accuracy of ± 5%.
Application areas: Industrial control systems, new energy equipment.
2、 Leading domestic brand
FengHua High Tech
Technical features: Small size, superior high-frequency characteristics, compliant with RoHS and halogen-free requirements. Supports reflow soldering and wave soldering, suitable for automated mounting.
Parameter range: Resistance accuracy ± 1%~5%, temperature coefficient 100-200ppm/℃, power 1/20W~1W.
Fujie Electronics (Anhui)
Product series: Anti sulfide metal thin film resistors (such as 1206 size).
Technical features: Passed AECQ200 certification, resistance range 0 Ω~10M Ω, accuracy ± 5%, temperature coefficient ± 100~200ppm/℃.
Application areas: automotive electronics, photovoltaics, microelectronics.
Meilong Electronics (Shenzhen)
Brand: SUPEROHM.
Technical features: Supports full size 0201~2512, resistance accuracy ± 0.5%~5%, rated power coverage 1/20W~1W, temperature drift coefficient 100~200ppm/℃.
4、 Technology Trends and Selection Suggestions
Material innovation: such as ROHM's electrode protective layer and Huaxin Technology's hydrogen sulfide release technology, both of which enhance their resistance to sulfurization through special processes.
Size and power balance: For small sizes (such as 0201), attention should be paid to heat dissipation and temperature rise issues. It is recommended to prioritize large sizes (such as 1206) to improve reliability.
Certification standards: In the automotive industry, attention should be paid to AECQ200 certification (such as Fujie Electronics), and industrial equipment should comply with RoHS and halogen-free requirements (such as Fenghua High tech).
For more detailed parameters or procurement information, please refer to the official websites or agency channels of various brands (such as Guoju AF series, ROHM SFR series, etc.).