The electronics and semiconductor sectors rely heavily on advanced materials to ensure the efficiency, reliability, and longevity of components. Among these, gold-plated fine wires are highly sought after due to their exceptional electrical conductivity, corrosion resistance, and durability. While other materials such as silver, copper, and palladium are occasionally employed for specific purposes, gold remains the material of choice for high-performance applications. LUMA is a trusted supplier of a wide range of fine wires designed to meet the exacting demands of this sector, offering solutions that combine precision engineering with advanced material science.
Gold plating on wires provides a conductive and corrosion-resistant surface layer, making these wires ideal for electrical connectors, printed circuit boards (PCBs), and other critical components. In addition to improving solderability and weldability, the gold coating ensures long-term reliability, particularly in environments prone to oxidation or harsh conditions.
When copper is used as the core material, there is a risk of copper atoms diffusing through the gold coating, leading to tarnishing and the formation of oxides or sulfides. To address this, LUMA provides nickel-gold plated wires, where a nickel strike layer acts as a diffusion barrier, enhancing wear resistance and preserving surface integrity.
“Fuzz buttons” are discrete signal contacts fabricated from fine wires, typically gold-plated molybdenum or beryllium copper. These contacts are formed into dense cylindrical structures and are valued for their high conductivity, mechanical strength, and oxidation resistance.
Fuzz buttons are widely used in applications requiring reliable performance under extreme conditions, including aerospace, military systems, and commercial electronics. Their excellent resistance to vibration, shock, and temperature variations makes them indispensable in satellite and space technology. For instance, gold-plated tungsten wires are preferred in environments subjected to high currents or extreme thermal fluctuations due to their superior structural stability.
Elastomeric connectors are versatile components designed for shock absorption, vibration resistance, and high-reliability connections in challenging environments. These connectors consist of alternating layers of insulating material and conductive wires, often gold-plated copper, to ensure consistent performance.
Gold plating is further optimized by adding a nickel strike layer to the core wire before the gold coating, enhancing durability and resistance to corrosion. Elastomeric connectors are commonly found in mobile phones, radar systems, memory cards, and display technologies. Their small size and high reliability align with the growing trend toward miniaturization in microelectronics.
Wire bonding is a critical interconnect technology used to create electrical pathways for power and signal transmission. Traditionally, solid gold wires dominated this field, but due to the rising cost of gold, gold-plated copper wires have emerged as a viable alternative.
The gold layer protects the copper core from corrosion while maintaining excellent conductivity. In some cases, silver wires are employed as the base material, with a nickel strike layer added to improve gold adhesion. LUMA’s expertise in producing high-quality gold-plated wires supports advancements in this essential technology, which is integral to semiconductor packaging and microelectronic devices.
Integrated circuit testing involves using probe needles or pins to evaluate the connections on assembled circuit boards. Tungsten and tungsten-rhenium wires, either gold-plated or uncoated, are ideal for this application due to their strength, conductivity, and resistance to oxidation.
These wires are used to fabricate probe needles for wafer sort testing, LCD and LED probe applications, and nanotechnology, as well as medical electrodes and other industrial uses. LUMA ensures the wires used in probes meet stringent quality standards, offering clean or polished surfaces, multi-layer coatings, and enhanced straightness to minimize material flaws.
The accuracy and longevity of probe needles are critical; their sharp tips must maintain precision without deforming or cracking under repeated use. Tungsten-based probe needles are renowned for their low and stable contact resistance, non-oxidizing properties, and minimal pad damage, making them an essential tool in modern electronics testing
LUMA’s extensive expertise in producing fine wires for the electronics and semiconductor industries is rooted in decades of innovation and a commitment to quality. By leveraging advanced plating techniques, precision manufacturing, and a deep understanding of material science, LUMA continues to support technological advancements across a broad spectrum of applications.
From fuzz buttons and elastomeric connectors to wire bonding and integrated circuit testing, LUMA fine wires remain at the forefront of modern electronics, enabling high performance, reliability, and durability in increasingly demanding environments.
Luma Wire Tech AB
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