The Anatomy of a Flex Circuit Cutline

July 10, 2017

In a previous article we discussed the various methods of creating the cutline of a flexible circuit.  With the various tooling options the methods, process steps, tooling and technology are different. These differences affect the actual “physics” of cutting, and create slight variations on the circuit material. In most cases...

Trends in the Electronics Medical Industry

June 30, 2017

The US medical electronics has been one of the fastest growing industries over the past decade. Similar to the rest of the electronics world, growth has been accompanied by the adoption of significant new product technology and innovation.  The need for a high level of control, reliability, and confidentiality has...

ITAR Registration

June 23, 2017

Like many vendors that build product for the defense industry, All Flex is ITAR registered.  ITAR stands for International Traffic in Arms Regulations and is a program run by the US government to control the export of defense related technology to foreign countries. ITAR regulations require information related to defense...

Successful Flexcircuit Assembly

June 15, 2017

There are a key differences between flexible pcbs and rigid pcbs requiring alternative design rules and handling methods.  One general area that is often a particular concern occurs when flexible circuits require component assembly.  Many contract manufacturers are reluctant to mix rigid and flexible circuits on the same assembly line...

Button Plating on a flexible circuit

May 18, 2017

Button plating describes a fabrication process widely used in the flexcircuit industry to selectively electroplate copper to the vias and onto the pads capturing the vias. The rest of the copper traces do not have plating.  Another industry term used to describe this feature is “Pads Only Plating”. Producing a...

Back bared flexible circuits

May 6, 2017

Back bared pad flexible circuits are a distinctive type of single sided flexible circuit providing some advantages over more “standard” circuits.  In the printed circuit industry, back bared pad circuit designs are also referred to as “dual access” or “reversed bared”.  As their name suggests, these circuits have insulation openings...

Origami Interconnection

April 14, 2017

Origami is the art of folding paper, it was believed to have originated in Japan, but historical evidence exists that suggests it existed in several parts of the world during the same time period.   One starts with a flat sheet of paper and by making a series of folds and...

Etchback on type 3 and type 4 flexible circuits

April 9, 2017

Thru hole etchback is a requirement that is sometimes specified on medical, military and aerospace procurement documents for multilayer flexible circuits and combination multilayer/rigid board circuits.  It specifically relates to the copper plated through-holes and the relative dimensions between the dielectric layers and copper layers. How is Etchback created? Etchback...

Vias and through-holes in a flexible circuit

March 30, 2017

I heard one of our Applications Engineers describe our product as “making sandwiches”. It is a pretty good metaphor as it helps visualize a cross section of a printed circuit with several layers of dissimilar materials.  Most flexible circuits and PCB’s have multiple conductive layers and are designed to have...

Maximizing Circuit Flexibility

March 16, 2017

One of the key design advantages of using a flexible circuit is that it can be bent, folded or twisted in just about any way imaginable.  As part of a Marketing initiative, All Flex built several origami figures using flexible circuits to demonstrate this characteristic. The ability to flex creates...

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