Fretting characteristics and environmental reliability of contacts with gold-plated PCB sample and different metal probe. (June 2020)

• Record Type: Journal Article
• Authors: Lin, Xueyan; Hao, Haitao; Xie, Min
• Is Part Of: Microelectronics and reliability. Volume 109(2020)
• Publication Date: 2020-06
• Subjects: Fretting -- Contact resistance -- Temperature and humidity cycle experiment -- Salt spray experiment; 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.2020.113653
• Languages: English
• ISSNs: 0026-2714

Abstract

Abstract: Based on the fretting test system, the contact resistance of contact pairs with gold-plated PCB sample and different metal probe, under the different fretting conditions are investigated to evaluate the fretting characteristics. The environmental reliability assessment of the contact pairs after fretting is carried out through the thermal humidity experiment and salt spray experiment. The influence of environment on contacts reliability is evaluated by measuring and comparing the static contact resistance in the fretting region before and after the accelerated environmental experiment. It is found that the contact pair of silver-plated probe with thickness 4μm mating with gold-plated PCB sample has the best fretting characteristics and environmental reliability. Highlights: Based on the fretting test system, the contact resistance of contact pairs with gold-plated PCB sample and different metal probe, under the different fretting conditions are investigated to evaluate the fretting characteristics. The influence of environment on contacts reliability is evaluated by measuring and comparing the static contact resistance in the fretting region before and after the accelerated environmental experiment. It is found that the contact pair of silver-plated probe with thickness 4μm mating with gold-plated PCB sample has the best fretting characteristics and environmental reliability.