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San Francisco Circuits Publishes the Importance of PCB Trace Widths in PCB Design

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San Francisco Circuits is pleased to publish the important factors that drive trace width, length, and style during the PCB design process.

San Francisco Circuits Publishes the Importance of PCB Trace Widths in PCB Design - RF CafeAugust 5, 2020 - San Francisco Circuits (SFC) shares in a recently published article entitled, "The Importance of PCB Trace Widths in PCB Design," that there are a variety of applications that demand specific trace layout characteristics and how or when to incorporate them into PCB designs. A specific PCB application will determine trace widths and trace types in a PCB design and a balance should be maintained between PCB fabrication cost, board density/size, and performance.

The purpose of a PCB trace is to connect any kind of electrical signal - analog, digital, or power - from one junction to another. And if a PCB has specific design requirements such as speed optimization, noise or coupling mitigation, or high current/voltage, the trace widths and types might be more important than optimizing for manufacturing cost of the bare PCB or overall board size.

There are a number of trace-related specifications in PCB fabrication. The following trace-related specifications begin to drive up bare PCB fabrication costs. The costs become considerably higher due to tighter PCB tolerances and higher end equipment needed to both manufacture and inspect or test the PCBs:

  • Trace widths narrower than 5 mils (0.005")
  • Trace spacing closer than 5 mils
  • Via holes with a diameter smaller than 8 mils
  • Trace thickness thinner or thicker than 1 ounce (which equates to 1.4 mils)
  • Differential pairs and controlled lengths or trace impedance


About San Francisco Circuits

San Francisco Circuits is a provider of PCB fabrication and assembly, has a dedicated team specializing in simple and complex PCB fabrication and assembly technologies. They can produce elaborate and high-quality PCBs in a number of custom and common layouts. From basic to intricate PCBs–their engineers will meet your PCB fabrication & assembly needs. The company provides a rare balance between technical expertise and competitive pricing. And they not only provide high-quality products but also high-quality customer service at the same time. San Francisco Circuits has been voted by National Television as the "world’s greatest in PCBs" and has demonstrated experience as a power player in PCB fabrication and assembly.

If you are looking to discuss PCB projects of any size or scope, feel free to reach out to them via our website (see below).



Alex Danovich
San Francisco Circuits, Inc.
Phone:  1-8001732-5143
Web:  www.sfcircuits.com



Posted August 7, 2020

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