Blog

All Flex continues to build its capabilities of fast-turn fabrication technology and innovate upon existing capabilities to bring you the highest quality flexible circuits at the fastest turnaround times possible. Read our blog below to learn more about what we’ve been up to.

LDI for Flexible Circuit Etch Resist

This article is the third and final part of methods for imaging etches resist. The first part discussed screen printing; the second part discussed traditional photo exposing. The third part discusses laser direct imaging (LDI).The basic process sequence for LDI is...

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Flexible PCBs and Connectors

While a well-designed flexible circuit will eliminate many connectors, ultimately most flexible circuits need to connect to something. Probably the most common entity that a flex circuit connects to is a rigid printed circuit board, but cable harnesses, polyester...

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Plating Process Options for Flexible Circuits

Plating copper through holes or vias is a requirement for double sided and multilayer circuits. In a previous blog we discussed the plating process; specifically copper seed coating using electroless copper and shadow® plating, which is then followed with an electro...

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Copper Thickness Requirements for Flex Circuits

There are many reasons an end user will specify the copper thickness of a printed circuit. The most obvious reason would be for current carrying capacity, but copper thickness also directly impacts thermal performance and impedance. All these are vital properties...

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Vias and Through-Holes in a Flexible Circuit

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...

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Cost and Price of a Flexible Circuit

In the right application, flexible circuits can reduce wires, eliminate connectors and rigid circuits. They might also simplify component assembly and reduce wiring errors. But competitive products such as rigid circuits, wires and connectors also have their place in...

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Flexible Circuits vs. Printed Circuit Board

It is common for many designers and engineers to think of a flexible circuit as a printed circuit board (PCB) that can bend. While it is true that a flex circuit and PCB perform the same electrical function, the structural and mechanical differences are significant,...

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Button Plating on a Flexible Circuit

Button plating describes a fabrication process widely used in the flex circuit 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...

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Soldering Flexible Circuits

The most common methods for component attachment on flexible circuits and rigid printed circuit boards involve soldering. The basic principles for soldering are the same for both flex and hard board, but soldering components to flexible circuits involves certain...

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