PCB bent due to mechanical force

Subscribe to Thread

Can we bent a PCB using mechanical force ?Will the PCB come ... - May 15, 2019 by dhanish

If you are trying to remove/reduce warpage in the PCB (I am ... - May 15, 2019 by charliem

Look up the glass transition temperature (Tg) for the PCB ma... - May 15, 2019 by Stephen

This issue is seen at mechanical process.The pcb is thin 32 ... - May 15, 2019 by dhanish

You really need to define what you mean when you say "b... - May 31, 2019 by Steve Thomas

Thanks Steve.The bent we are seeing is at the location witho... - Jun 01, 2019 by dhanish

It would kill the component on the opposite side, be careful... - Sep 23, 2019 by sssamw

dhanish

#82574

PCB bent due to mechanical force | 15 May, 2019

Can we bent a PCB using mechanical force ?Will the PCB come back to original condition or it will be bent forever after the mechanical force is removed from the pcb?

reply »

charliem

#82575

PCB bent due to mechanical force | 15 May, 2019

If you are trying to remove/reduce warpage in the PCB (I am presuming) place in heated environment (170 F) for 24 hrs with weight on it to keep it flat. Has helped us in the past.

reply »

Stephen

#82576

PCB bent due to mechanical force | 15 May, 2019

Look up the glass transition temperature (Tg) for the PCB material. If you get the PCB above this temperature it will become quite soft. If it is a populated board remember to take any moisture sensitive devices on it into consideration.

reply »

dhanish

#82577

PCB bent due to mechanical force | 15 May, 2019

This issue is seen at mechanical process.The pcb is thin 32 mils.Can we bent it just by using mechanical force without the heat?or the pcb will break if the force is high instead of becoming bent at one corner..

reply »

Steve Thomas

#82678

PCB bent due to mechanical force | 31 May, 2019

You really need to define what you mean when you say "bend" and when you say "break".

You might have zero damage to a bare board but cracked solder joints and ceramic caps on an assembly, given the same amount of bending or stress. It all depends on how far you bend it, temperature, board design, how/where the stress is applied, etc..

reply »

dhanish

#82681

PCB bent due to mechanical force | 1 June, 2019

Thanks Steve.The bent we are seeing is at the location without any component .It is a small and long pcb,one side fully loaded with component .Thebother side got no component. We can manually bend the pcb at the side without the component. All the layers are filled with copper thieves at the location without component. Too much of copper make the pcb easily bent.

reply »

sssamw

#83450

PCB bent due to mechanical force | 23 September, 2019

It would kill the component on the opposite side, be careful to bent a PCB especially with component installed. Be sure the bent warpage is no higher than the component permitted or not high to cause de-lamination.

reply »