Each supplier may have its own set of design rules and recommendations.
Flex circuit design rules.
Design guide for flex rigid pcbs.
Flexible circuits design guide.
Design rules for routing conductors on flexible circuits can be found in the ipc 2223 sectional design standard for flexible printed boards.
However because flex circuit is unique it is a good idea to use the same material in prototype that will eventually be used in volume production.
You can also refer to the standard.
Flex and rigid flex boards.
The most important design difference to keep in mind is the three dimensionality of a flex circuit.
For designers of flexible circuit boards we recommend the ipc 2223 guideline design guidelines for flexible circuit boards which is available from the ipc online store or in german from the fed website.
Figure 5 1 designing with a bias for copper improves the circuit s dimensional stability.
Pcb design and layout will also be affected by your planned circuit density and line spacing.
Hardboards designing a flex circuit is only one step away from designing a hardboard.
During testing you are trying to see how many cycles the flex circuit can withstand.
If you are not aware of this you will struggle with designing them.
Understand that flex and rigid flex design rules are different.
Using your circuit design software program position connector footprints in the proper locations and route conductors per schematic or net list.
Below is a general rule on a flex circuit bend radius.
Flex circuits follow different rules for being optimal than rigid circuits.
Designing flexible circuits is sponsored by all flex.
Flex designs require button plating.
It may not be practical for all applications.
Tolerance setting flex circuit designs proper application of tolerances of ex circuit design features is a matter that concerns both the ex circuit manufacturer and the ex circuit user.
The bend radius rule is just a general guideline.
Documents for manufacturing flex rigid circuit boards basically standards must be regarded such as ipc 2223 ipc 6013 the basic design guide from würth elektronik as well as variant specific design rules and our drying recommendations.
Design differences flex circuit vs.
Flex rigid design guide poster.
Creative bending and flexing can save space and layers.
Heterogeneous system rigid circuit board wiring harness flex soldered in or plugged detachable.
The course was written by john michael pierobon who has an advanced engineering degree from purdue university john michael has taught hundreds of technical courses throughout the world and speaks several languages fluently.
Applications which go beyond our standard design rules require technical clarification with our product management.
Also if you are using flex circuit design software that might not match up to the available guides for your flex circuits you will not have an easy time.
For flex annular rings need to be larger for flex rather than rigid.