Hello Technetters,

        Standard vapor phase reflow profiles suggest cooling rates of
between 1-4 degrees C/sec. Has anyone found it necessary to
drastically reduce the cooling rate, down to C/minute, for large
BGA's (45mm x 45mm)?

Thanks in advance,
Craig


Dr. Craig Hillman
CALCE Electronic Products and Systems Consortium
University of Maryland
College Park, MD  20742
(301)-405-5316
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