The Superconductive Circuit Board

    Understanding PCB Manufacturing: Electrical Testing

    PCB manufacturing facilities routinely perform Electrical Testing with “Flying Probe” testers which are well suited to smaller production runs.

    For short runs, the flexibility of quick set-up ensures cost effective Flying Probe tests outperform the lead-time, cost and fixed designs of dedicated test beds. With Flying Probe tests, no fixtures need to be prepared, only data files.

    Flying Probe tests are able to reveal not only shorts and opens produced by the manufacturing process but have also been known to expose design errors.

    Understanding PCB Manufacturing: Multilayer Assembly

    One of the more interesting activities routinely associated with PCB manufacturing is the process of assembling multilayer circuit boards.

    At any given time 40% of our PCB manufacturing at Omni is producing multilayer circuit boards, so understanding the process is important. Layers of copper foil, prepreg and core material are sandwiched together under high temperature and pressure to produce multilayer assemblies. Pressure is needed to squeeze out air while heat is required to melt and cure the thermosetting “prepreg” adhesive which holds the multilayer PCB together.

    How to Implement Metrics and Measurements in a Circuit Board Shop

    Tell someone in a manufacturing facility you are going to be measuring their performance and you will most likely get a sour reaction. Often, it’s because they know they’ll be held accountable for metrics they may be able to influence but have little or no control over. Forcing people into the metric spotlight under these conditions is the perfect recipe for stress.

    If you are one of those people who like to inject stress directly into your organization, I have a few good examples for you:

    Understanding PCB Manufacturing: CNC Drilling

    One of the key processes in a PCB manufacturing facility is the CNC Drilling Department.

    Holes are drilled in PCBs for two main reasons:

    Customer requirements.- component mounting and to promote conductivity between Cu layers (vias)

    Manufacturing requirements.- to ensure precise registration and to help the operator ensure each drill has successfully completed the tool path. 

    Printed Circuit Board Design Techniques and Best Practices

    Using a few simple techniques can help ensure a more robust printed circuit board design which can also help you save money.

    Quantum Computer Developer Chooses Omni for Precision Manufacturing

    The technical expertise needed to build the world's first commercial quantum computer is immense, which is why D-Wave Systems Inc. turned to Omni Circuit Boards to help them take up the challenge.

    PCB Finishes - White Tin, Immersion Tin, Immersion White Tin and Whiskers

    Mention Immersion White Tin around sales people from PCB shops and Tin Whiskers will inevitably be part of the topic.

    They may not feel comfortable down mouthing the competition in public but a process? Well that’s fair game. What the salespeople don’t know or won’t tell you is the Immersion Tin used as a finish for circuit boards completely dissolves in the solder used in the circuit board assembly process.

    4 Tips for Saving on Circuit Board Prototyping Costs

    1) Thermal and antipad (solder mask) clearances

    Considering thermals and antipad (solder mask)clearances on the power &/or ground plane layers of multilayer boards - if layer to layer registration, tolerances for hole size, location, film expansion and registration have not been taken into account then manufacturing will experience high reject rates and increased costs.

    4 Circuit Board Design Mistakes to Avoid

    Avoid these four circuit board design mistakes