Hello, our customer received 1000 pieces P/N: SN74HC132N with Date Code 1816 from us, but claims the coloring of the leads and solderability:
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SaNu the pins are "tapped" (surface brown to black-brown).
The solderability according to IPC-A-610 EN Edition E-2010 Chapters 5.2.4 and 5.2.6 or IPC-T-50 is not given.
Test conditions Solderability:=> Soldering bath with 245C => Test / immersion time 3s=> flux Interflux 2005 => Also the examination by soldering iron method did not bring sufficient wetting (min 95%) according to J-STD-003 chapter 4.2.1.5.2 => The IC's cannot be used in this form.
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Can you possibly advise if the discoloring of the parts can be the reason for the solder problems? Per datasheet these parts are not MSL sensitive. Would they require any specific pre-treatment before soldering?
What additional details would be required to look into this issue?
Thank you.
