Insulated Bonding Wire for Semiconductor Technology

    Electronic circuits rely heavily on semiconductors. A semiconductor, as its name suggests, is a substance that conducts electricity only partially. A semiconductor’s conductivity lies halfway between that of an insulator (almost no conductivity) and that of a conductor (nearly complete conductivity). The majority of semiconductors are crystals formed of certain materials, the most common of which is silicon.

    Where does Industrial Use come in?

    Semiconductors’ physical and chemical qualities enable them to create modern marvels such as microchips, transistors, LEDs, and solar cells, among several other things.

    Transistors and other regulating devices composed of semiconductor materials form the microprocessor that controls the functioning of space vehicles, railroads, robots, and other systems.

    Importance of Semiconductors

    Semiconductors have a number of characteristics that make them extremely useful in a variety of applications.

    • Because of their tiny size, they are extremely portable.
    • They have a lower input power need.
    • Devices made using semiconductors are shockproof.
    • They live for a longer period of time.
    • They don’t make any noise when they’re working.

    All You Should Know About Wire Bonding!

    During semiconductor device manufacture, wire bonding is the procedure of creating interconnections between an IC (integrated circuit) or other semiconductor device and their packaging. Wire bonding can be used to link an IC to other electronics or to connect one printed circuit board (PCB) to another, although it is less popular. Wire bonding is the most cost-effective and versatile connectivity method, and it’s how the great majority of semiconductor packages are put together. Wire bonding is a technique that can be employed at frequencies higher than 100 GHz.

    wire bonding

    Image Source- Google

    Wire bonding using copper or insulated wire has a lot of benefits, but it also has a lot of drawbacks. Many new discoveries and answers have resulted from rigorous research across the world.  Wire bonding using copper wire or insulated wire has a number of advantages and disadvantages, including wire open and short tail faults, poor bondability for stitch/wedge bonds, Cu wire oxidation, and stiff wire on weak support structures.

    Insulated cables aren’t a new invention. They’ve been utilized in a number of applications for a long time, including motor coils, electronics circuits, and transformers in a wide range of autos, electrical gadgets, and machinery. Wire bonding with insulated wire has been around for over 10 years. Insulated wire bonding was not popular due to high production costs and a lack of market demand.

    Processes of Wire Bonding

    Gold ball bonding and aluminum wedge bonding are the two most frequent methods.

    Thermosonic bonding is used to connect gold wires. This entails melting the wire’s end to create a gold ball, often known as a free-air ball. Whereas, Bringing a clamped aluminum wire into touch with the aluminum bond pad is the process of aluminum wedge wire bonding. Because gold ball bonding is non-directional, it is substantially quicker than aluminum wedge bonding, resulting in its widespread application in plastic packaging. Due to the high sealing temperatures used in hermetic packages, gold ball bonding on aluminum bond pads cannot be employed, as these temperatures dramatically accelerate the development of gold-metal intermetallics, which can lead to early life failures. Gold ball bonding on gold bond pads, on the other hand, maybe used in hermetic containers.

    The wire bonding business has recently witnessed a preference for copper over gold for use in the wire bonding process, owing to the growing cost of gold. Despite worries that copper is less dependable due to its hardness and susceptibility to corrosion, the copper wire may be utilized at lower diameters while functioning similarly to gold, saving money.

    Insulated wire is in high demand now and in the future because it can avoid wire shorting, which is becoming a new concern as BPPs and wire widths continue to shrink. However, there were issues that needed to be addressed before insulated wires could be extensively employed in sophisticated microelectronics packaging wire bonding. A typical issue was non-sticking on lead. Several groups of scholars and engineers have presented various solutions to the difficulties. Although there are few current relevant journal publications, with more sophisticated microelectronics devices predicted to be packed by wire bonding employing insulated wires in the near future, additional articles describing novel methods, reduced prices, better outcomes, and inventive applications are expected.

    The New Challenges of Wire Bonding

    Economic improvement in the microelectronics packaging sector is measured in fractions of cents, and ultimately cost dominates. A production manager must think about expenses as well as package performance. Because of its economic efficiency and flexibility, wire bonding controls more than 90% of the packaging business. It has built up a sizable stockpile of supplies, equipment, and labor. As the industry represents an emerging era, new challenges in wire bonding for advanced microelectronics packaging emerge, such as wire size reduction, cost reduction, and bond pad pitch (BPP) reduction, the emergence of alloyed gold wires, copper wires, and advanced packages, increase in I/O numbers, and enhanced manufacturability of capillaries for wire bonding of ultra-fine-pitch low-k devices.

    challenge of wire bonding

    Image Source- Google

    Where do we come in the picture?

    Oricus is made up of a global network of experts that are dedicated to and enthusiastic about their work. The organization is managed and run professionally, with the values of honesty, equality, and respect at its core. We are dedicated, goal-oriented, and committed to achieving our objectives. We are proud of our principles, professionalism, enthusiasm, and tenacity, as well as our unwavering commitment to providing value to our consumers.

    We specialize in developing one-of-a-kind masterpieces that combine one-of-a-kind workmanship with cutting-edge manufacturing technology to generate micro precise tools. From High-Temperature Resistant Tools for Power Devices to Tools with Complex Geometries for 3D Advanced Packaging, Oricus can Design and Manufacture one-offs or high-volume orders to your exact requirements.

    To Conclude, Oricus believes and strongly suggests that making challenging decisions between economic and technological aspects are required when choosing packaging technology. Infrastructure integration costs are frequently the determining element in the adoption of newer technologies. The insulated bonding wire is a technology on the horizon that has the potential to reduce integration costs while delivering the required results. To allow the insulated wire to be employed on current package assembly lines, new process windows, as detailed in this article, must be designed.


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