Andy and Sue Critcher have been the lead designers at Total Board Solutions Limited, a UK-based design bureau, since its founding in 1998. I asked Andy to share his opinion about the friction between some PCB designers and their engineers, and what can be done to improve communications between these groups.
Andy Shaughnessy: Andy, tell us a little bit about your company and how you operate.
Andy Critcher: Total Board Solutions Limited (TBS) is a design services bureau based in the UK. We fit into our customer’s design process, providing whatever is not a core competency. This means that for some customers we perform just the layout portion of their design while for others we enter the schematic, libraries, create the layout and even get the boards fabricated and assembled—no two customers are exactly the same. When working with startups we provide the link between the concept, or idea, and product realization; providing knowledge of design process, fabricators capabilities and our experience when discussing the inevitable tradeoffs between the requirement and what is possible.
Shaughnessy: A recent survey of our PCB designer readers found that there’s often friction between PCB designers and engineers. Some designers say, only half-jokingly, that their EEs are their biggest challenge. Why do you think there’s such disconnect?
Critcher: Looking solely from the PCB side, I think that the disconnect mainly arises from the lack of understanding of what a PCB designer actually does, it is perceived as a simple task of dot joining and that anyone can do it. I know that this is a bit of a cliché but it does seem to hold true. As an example, in a number of the companies that I have worked with, PCB progress meetings are held and the PCB designer is never asked to attend; their input can be easily be determined by the engineering team/project manager.
This perception is backed up by the lack of formal qualification for PCB designers—for my generation, we generally started off as mechanical draughtsman in the traditional drawing office and then moved to the PCB section.
This perception means that the status of the PCB designer is quite low, so when they advise the engineer that something is not possible this can be met with a certain amount of derision. The engineer possibly thinks that the PCB designer is just being obstructive, while conversely, the PCB designer thinks that the engineer is very dismissive of his knowledge, capabilities, opinion, etc.
Let’s look at the issue from the engineer’s perspective. By providing design consultancy, we are fortunate enough to be a lot more involved in the engineer’s world, including some of the problems that they have to deal with as part of the overall product development. One engineer explained that the design part was relatively straightforward, but the need to meet cost, functionality, component sourcing, obsolescence, test plans, as well as reading through 150+ pages of documentation on a device’s timing “makes life interesting.” As PCB designers, we tend to have a lot of questions, especially about the newer technology, so we can bombard the engineer with a number of questions concerning unfamiliar topics expecting immediate answers, and normally at this point the pressure to get it finished is already building.
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