Surface appearance

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Dear all, Recently our lead-free samples being rejected d... - Feb 21, 2006 by

who rejected it? , sounds like an average leadfree solder jo... - Feb 22, 2006 by

Maybe you should reject the rejecter???? Is that a double ne... - Feb 22, 2006 by

Joseph

#39854

Surface appearance | 21 February, 2006

Dear all,

Recently our lead-free samples being rejected due to very dull and sometimes grainy and very porous surface on solder joints. This samples was flow thru' the lead-free wave soldering with SN100C alloy composition. Referring IPC-A-610 D, lead-free solder may produced dull, matte, gray and grainy apperaring that are normal and acceptable.

Can anyone comment why our samples were rejected ?

Best regards,

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slaine

#39858

Surface appearance | 22 February, 2006

who rejected it? , sounds like an average leadfree solder joint. you could section it to help prove its good.

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bobpan

#39859

Surface appearance | 22 February, 2006

Maybe you should reject the rejecter???? Is that a double negative???