Flex circuit manufacture – the essentials

FCBs are the heart of several modern, compact, lightweight, and efficient electronic devices.

However, like the variety of the use of flex circuits, a successful flex circuit manufacturing process is driven by a number of essential components. Following are two such points that touch to the process of manufacture of flex circuits.

Materials used

Selection of the right plastic substrates plays a very important role in a flex circuit manufacturing process.

The range includes substrates like polyimide (PI), polyethylene naphthalene (PEN), polyester (PET), gold, constantan, beryllium copper, and stainless steel - all with a varied degree of flexural strength.

Since, these substrates work as the base for the entire board architecture, they should be selected in perfect accordance to the final application of the circuit board.

Design essentials

A flex circuit can be single-sided, single access double-sided, multi-access double-sided, or rigid-flex multilayered. A flex circuit manufacturing process depends largely on these design differences too.