Approx cost increase for flex rigid option

[MEturnedEE]

Hi all, I'm looking into a flex rigid PCB configuration for our next design. We currently have a 4 layer PCB about 40mm x 60mm, and looking to split it into 2 rigid PCBs with a flex between. The current PCB + assembly costs about $2 at volume. Anyone have any experience what I could expect to be the cost increase, if all other things (component number, type, etc) are kept equal? Are we talking 20%, 50%, 100% range numbers? Thanks in advance!

 

[MacGyverS2000]

How many units? What goes across the flex... 500 tiny I/O signals or 2 fat power traces? How many layers? Is it flex-once for assembly purposes, or flex-many for usability? Do you need any stiffeners (middle, ends, or both)? Willl this be Chinese manufacturing or local?

Not nearly enough info to even ballpark it.

Dan - Owner

http://www.Hi-TecDesigns.com

 

[MEturnedEE]

Thanks for response!

Est annual production will be 10k-20k
We are looking at approx 10 signals - 8 would be communications/audio such as I2C or I2S and 2 would be power at 3.7V.
Both rigid boards are 4 layers.
Flex-once or many: whichever is more effective - but it only needs one flex at assembly.
No stiffeners needed.
China production

 

[MacGyverS2000]

I would expect <<$0.50 increase, probably closer to $0.20-0.25, with an expected increase in assembly cost due to doubling the number of boards (even if they are now half of the size) and extra assembly with the flex.

Dan - Owner

http://www.Hi-TecDesigns.com