Fabrication of 50.0 μm Ultra-Fine Pure Rhodium Wire, Using a Multi-Pass Wire Drawing Process, for Probe Card Pins

• Published in: Materials Vol. 12; no. 13; p. 2194
• Main Authors: Lee, Sang-Kon, Lee, In-Kyu, Lee, Sung-Yun, Hwang, Sun-Kwang
• Format: Journal Article
• Language: English
• Published: Switzerland MDPI AG 08.07.2019; MDPI
• Subjects: Design; Electrical properties; Electronic components; Energy consumption; Experiments; Finite element method; Lubricants & lubrication; Mechanical properties; multi-pass wire drawing process; probe card pin; process design; Rhodium; Schedules; Semiconductors; Strain hardening; Test systems; ultra-fine pure rhodium wire; Wire drawing; Yield stress; ultra-fine pure rhodium wire; probe card pin; multi-pass wire drawing process; process design
• ISSN: 1996-1944; 1996-1944
• DOI: 10.3390/ma12132194

Rhodium is a rare material that is widely used in electrical and electronic components due to its excellent mechanical and electrical properties. Ultra-fine rhodium wires in particular are widely used in electronic components. In this study, a multi-pass wire drawing process was designed to fabricate ultra-fine pure rhodium wire with a diameter of 50.0 µm from an initial diameter of 80.0 µm, which is used as probe card pins. An elastic-plastic finite element (FE) analysis was performed to validate the pass schedule that was designed for this study. A fine wire drawing experiment was also carried out to verify the effectiveness of the designed process. As a result, the ultra-fine rhodium wire was fabricated using the design process without wire breaks and the diameter of the final drawn wire was 47.80 µm.