Interpretation for IPC 600H for Clause 3.3.2 (Lifted Land - Cross Sectioned)

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We found repeated pad lifted after different SMT Reflow temp... - Apr 28, 2014 by JOSEPH

Your customer is correct. Your supplier has clamped some sor... - Apr 28, 2014 by davef

I hope Dave is saying that your supplier is pulling the wool... - Apr 29, 2014 by Hegemon

JOSEPH

#72009

Interpretation for IPC 600H for Clause 3.3.2 (Lifted Land - Cross Sectioned) | 28 April, 2014

We found repeated pad lifted after different SMT Reflow temperature (eg: 243 deg C and 233 deg C) at an isolated slot. The PCB Supplier had claimed that such condition is acceptable as per IPC 600H Clause 3.3.2 (Cross Sections) - eg: Acceptable - Class 1,2,3 = After thermal stress testing or rework simulation - Lifted lands are allowed.

Upon consultation with our Customer, such pad lifted cannot be concessed (rejected). Appreciate advise if such interpretation of Clause 3.3.2 by the Supplier is correct.

Attachments:

PAD LIFTED.pdf

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davef

#72021

Interpretation for IPC 600H for Clause 3.3.2 (Lifted Land - Cross Sectioned) | 28 April, 2014

Your customer is correct. Your supplier has clamped some sort of machine to your butt and has plugged it in the wall outlet.

Honest mistake: * IPC-A-600H, 3.3.2 Lifted Lands - (Cross Sections) ... pertains to boards that were cross sectioned after thermal stress testing or rework simulation * IPC-A-600H, 2.5.5 Lifted Lands – (Visual) ... pertains to production boards

The picture that you attached doesn't show a cross section of a board.

BR ... davef

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Hegemon

#72030

Interpretation for IPC 600H for Clause 3.3.2 (Lifted Land - Cross Sectioned) | 29 April, 2014

I hope Dave is saying that your supplier is pulling the wool over your eyes, and not describing the actual event.

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