Printed Circuit Board Assembly & PCB Design SMT Electronics Assembly Manufacturing Forum

Printed Circuit Board Assembly & PCB Design Forum

SMT electronics assembly manufacturing forum.


removing glued chips

#34748

removing glued chips | 5 June, 2005

We find it impossible to remove the glued micro-BGA chips like the CPU and the UEM ICs used in Mobile Phones. They are both surface mount devices and glued with some chemicals we think. Any help is most needed in this matter.

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Rob

#34756

removing glues chips | 6 June, 2005

It's not underfill is it?

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PCI

#34759

removing glues chips | 6 June, 2005

> We find it impossible to remove the glued chips
> like the CPU and the UEm ICs in Nokia Mobile
> Phones. They are both surface mount devices and
> glued with some chemicals we think. Any help is
> most needed in this matter.

May we know what process presently you are following for the removal of the IC.

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#44948

removing glued chips | 8 November, 2006

> It's not underfill is it?

Sorry, but i don't know what is underfill, if you mean BGA, yes it is BGA !also sorry for very very late reply

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#44949

removing glued chips | 8 November, 2006

at present we try to do it with hot-air gun adding flux below the chip while heating. but in most cases the PCB gets damaged while doing this. sorry again for late reply.

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