Rigid-Flex Layer Preference

Manufacturing Flex and rigid-flex
1

For a 2-layer rigid-flex with a single-layer flex limb, do you have a fabrication preference for whether the flex copper continues from the top or bottom rigid layer, or is either acceptable?

1 Like
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Hey Phil,

Thanks for posting. So our senior design engineer Greg Albers says, “There is no such thing as a rigid-flex 2-layer board.” He’s asking if he can call you to discuss. you can send me your number at lucyi@protoexpress.com.

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Hi Lucy,

Thanks for the follow-up. I think there’s a terminology misunderstanding. I’m referring to a rigid-flex construction where the rigid section is 2-layer, with a single copper layer continuing into the flex limb.
My question is simply whether, from your fabrication process point of view, you have a preference for that flex layer to originate from the top or bottom rigid copper layer.

Thanks,

Phil

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Hi Phil,

I’m currently on vacation but our team is looking at your reply.