Hi,
I have a rigid-flex pcb which has 10-layer bonded flex. The flex part's
length is 10 cm and its width is 1.02 mm. According to the IPC min. bend
radius for this type of flex is 20 x thickness = 20 x 1.02 mm=2.04 cm. (I
know, this type of design is not recommended...)
It is hard to bend the flex. I tried to heat it at 90 C, for 45 min. Now it
is better than before, but I do not know if I did anyting wrong. I have not
tested the lines if there is open yet.
Do you think it is a good idea to heat it? And in which conditions is it
safe if so?
Or do you have any commend?
Thanks in advance,
Regards

Sefika OZKAL 






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