IPC A 600 E is silent on the acceptibility criteria for solder coating
on SMD pads done by Vertical HASL machines.
Since these rectangular SMD pads are placed along 'X' and 'Y' axis both
on the same card perfect uniformity is never possible. IPC Technical
talent pool should be able to throw some light on it.
P. V. Khan
Chief Quality Manager
Linaks Microelectronics Limited
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