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for the new Flex and Rigid Flex Design Guideline:  Best Design Practices and Cost Trade-Off's

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The Typical PCB Stiffener:

Most PCB stiffeners are constructed with a rectangular bar with drilled and tapped holes.  Drilling and tapping holes in a bar is expensiveAssembling with screws is time consuming.


Compufab has reduced this assembly time with the design of an ingenious bar shape that will accept a rivet anywhere along its length.  Experience has shown that most existing PCB designs using stiffeners can adopt this new stiffener with no changes.

Other Advantages which may improve your design:

     *  Same bar will mount on PCB's with different hole locations.

     *  Eliminate close tolerances between mounting holes on PCB's.

     *  In most cases, the stiffener will occupy less precious real estate on the PCB

     *  Can be mounted over insulated spacers to clear copper traces or wire adds.

     *  Can be anodized different colors for coding.

     *  Ideal PCB label area, when used on read edge of PCB.

     *  Strong and light-weight.

     *  Clean, professional appearance.

     *  Rivet mounting reduces assembly time.

     *  Can also be used as a heat sink or power/ground bus.  (Use metal spacers and washers)


The Universal Printed Circuit Board Stiffener system has been operated and tested under severe vibration conditions.


Why use a PCB Stiffener?


  • Reduce warp and bow when handling a large PCB


  • Eliminate dangerous deflection due to vibration and bending


  • Assure good guidance of a PCB into its backplane connector


Omni PCB is pleased to be working with Compufab and their unique product, The Universal Stiffener™   This is an aluminum bar which can function as a mechanical PCB stiffener, a heat transfer device or an electrical bus bar.  The Universal Stiffener™ fastens to a PCB with machine screws or rivets anywhere along the length of the bar.  The Universal Stiffener™ is a lower cost alternative to machined fiberglass or machined metal PCB stiffening devices.


Contact us for a free sample.


Compufab developed a New Universal Stiffener which does all the things a PCB stiffener should do, with the added advantage of time saving rivet assembly.  The stiffeners are designed specifically to use Avdel Textron Inc. Briv® 1800 series rivets.


UniversalStiffener