The Superconducting Circuit Board

    Why Omni Circuit Boards Ltd was the First Printed Circuit Board Manufacturer to Produce an Aluminum-Trace (very low temperature, superconductive, cryogenic) PCB

    Tue, Aug 27, 2019 @ 02:03 PM Omni Team Aluminum Trace PCB - Superconductive PCB

    Today's computing technology is rapidly outpacing the capabilities of standard, mass-produced printed circuit boards. 

    omni aluminium 4 400x400


    That's why it was no surprise when the engineers at British Columbia based D-Wave Systems came to us looking for a unique product.

    With quantum processing units (QPUs) that operate in a cryogenic environment, they needed something more than an "off-the-shelf" Copper PCB and could reliably withstand those low temperature operations.

    The resulting product, developed through many months of collaborative research, design, and testing, was an Aluminum-Trace PCB constituted by aluminum-on-aluminum wire-bond pads and solder-on-aluminum joints which renders it superconductive and capable of operation at cryogenic temperatures.

    The entire electrical path of the first Aluminum-Trace PCBs was superconducting below 500 milliKelvin temperature, and tolerates repeated cryogenic temperature cycling without breaking wirebonds.

    The superconductive aluminum PCB itself represents a true breakthrough for advanced computing platforms. Although aluminum had been used in PCB production in the past, ours is the first known example of a true aluminum mono-metal wirebond connection model, rather than one that simply uses the aluminum to diffuse heat from copper within printed boards.

    It's a product and solution that didn't and couldn't exist just a few years ago, and we are proud to have been on the leading edge and to have met the rigorous needs of a client that's using advanced technology to change the processing world.

    Beyond being a monumental achievement, we feel the Aluminum-Trace PCB highlights three unique strengths within Omni Printed Circuit Boards:

    • The strength of our products and technical capabilities. The fact aluminum trace PCBs had been unsuccessfully attempted in the past, speaks volumes about our technical capabilities. Regardless of the specific product needs and tolerances, we feel confident in our ability to deliver the right solution, for example, despite the initially untested nature of the aluminum-on-aluminum board, current breakage rates are less than 0.1%. 
    • The determination and creativity of the Omni research staff. During their initial search for a versatile PCB solution, the team at D-Wave Systems wasn’t just unable to find the printed circuit board they needed, but also, another PCB manufacturer that was willing to take on the challenge, since the standard approach from most PCB designers and manufacturers has been to produce "stock" PCB boards at low margins, rather than attempting to break new ground in the industry.
    Aluminum Material Thickness
    • Our commitment to custom, individualized PCB solutions. Researchers and engineers turn to us because they want the best in PCB design and prototyping for R&D, along with quick and efficient service, not because they're looking for the same kinds of boards they can get anywhere else.

    As proud as we are of this achievement, and all it means for our team and company, we look forward to working with new products to further test the possibilities of printed circuit board technology.

    Contact Omni today to see why technology leaders turn to us for answers and learn exactly what we can do for you.

    To learn more about our superconductive Aluminum-Trace PCBs, and possible applications of this technology, take a moment to download our design and development case study. Or our Aluminum-Trace designers Toolkit.

    Omni Team

    Written by Omni Team