A telecom equipment manufacturer located in a coastal area encountered an unexpected reliability issue in its base station power modules. Several 0603 chip resistors showed a significant increase in contact resistance, causing intermittent circuit failures and reduced system stability.
JEC’s Analysis
Failure analysis revealed that sulfur-containing gases in the environment had penetrated microscopic gaps in the resistor protective layer. The sulfur reacted with the silver electrodes, forming high-resistance silver sulfide and eventually causing conduction failure.
JEC’s Solution
To improve long-term reliability, the customer switched to anti-sulfur chip resistors featuring:
Silver-free copper-nickel alloy electrodes, eliminating silver-sulfur reactions
High-density glass protective coating to reduce corrosive gas penetration
Optional nano-coating enhancement technology for applications exposed to severe sulfur contamination
The Result
After upgrading to anti-sulfur resistors, the customer achieved the following effects:
Improved resistance stability
Reduced field failures
Extended equipment service life
Lower maintenance costs and higher system reliability
For telecom infrastructure, industrial electronics, automotive electronics, and outdoor power equipment, selecting anti-sulfur resistors is an effective way to improve reliability in harsh environments.
At JEC (Dongguan Zhixu Electronics), we provide reliable passive component solutions for demanding applications.
Looking for components that can withstand corrosive environments? Contact us for technical support and free samples.
Post time: Jun-18-2026