Sulfuration of Resistors
The News
KOA’s special anti-sulfuration resistors are intended to be used under harsh environment with a high level of sulfur contamination. A high reliable material with extremely high sulfuration-proof characteristics is used in the inner top electrodes.Thanks to technical know-how of sulfuration-proof material, KOA has been able to achieve an extremely high level of sulfuration-proof performance.
If it’s intended to use products under harsh environment (under high density of sulphur), KOA recommends using the “Anti-Sulfuration Flat Chip Resistors” as a perfect measure.
KOA’s Anti-Sulfur Resistors Line-up
Product Features
- Excellent anti-sulfuration characteristic due to using high-sulfuration-proof inner top electrode material
- Available for several standard product series (like RK73, SG73, CN)
- Intended for use under harsh environment
Examples of Critical Environment
- Oil or grease for machine tools and gears sometimes includes sulfur substances
- Oil with high amount of impurities and exhaust gas after combusting the oil contains sulfur gas
- Rubber products or areas near rubber manufacturing plants
- Where fossil fuels are handled or used
- In case a PCB is molded by rubber sealing which includes sulfur
- In case components which generate sulfur are mounted in the surrounding
- (e.g. molded coatings which includes sulfur)
- Areas where volcanic gases are emitted
- Areas of biological gas cracking plants
- Near waste dumps / waste disposal sites
Application Examples
- Industrial control systems
- Automotive
- Electric instrumentation
- Power meter / conditioner
- Solar / wind inverter circuits
- Avionics
For more information, please go to: https://www.koaglobal.com/en/product/smd-resistor.aspx#CategoryTitle2
