Effect of roughness on electrical contact performance of electronic components. (July 2017)

• Record Type: Journal Article
• Authors: Liu, Xin-long; Cai, Zhen-bing; Liu, Shan-bang; Peng, Jin-fang; Zhu, Min-hao
• Is Part Of: Microelectronics and reliability. Volume 74(2017)
• Page Start: 100
• Page End: 109
• Publication Date: 2017-07
• Subjects: Fretting -- Contact resistance -- Contact spot -- Roughness -- Electric contact; Electronic apparatus and appliances -- Reliability -- Periodicals; Miniature electronic equipment -- Periodicals; Appareils électroniques -- Fiabilité -- Périodiques; Équipement électronique miniaturisé -- Périodiques; Electronic apparatus and appliances -- Reliability; Miniature electronic equipment; Periodicals; 621.3815
• DOI: 10.1016/j.microrel.2017.05.024
• Languages: English
• ISSNs: 0026-2714

Abstract

Abstract: This study investigated the effects of electrical contact resistance (ECR) on pogo pins used in mobile phones, chargers, digital cameras, Bluetooth headsets, medical equipment, and other electronic products with different surface roughness. Experimental results revealed that metallic wear debris is generated by fretting motion and formation of a third body on rough surfaces without removal by fretting motion, thus increasing ECR. Wear debris does not easily form the third body at contact areas of smooth surfaces and causes formation of metal–metal contact pattern. Results showed low ECR with fretting motion. 3D and 2D profiles of contact area verified the definition of contacting high spots, further explaining increases in ECR. Highlights: Different roughness effect the contact resistance was studied. Relationship between wear mechanisms and contact resistance was analysed. Theoretical calculation carried out to evaluate contact resistance. Microscopic analysis methods to improve the quality of article.