Electronics Forum: rebel and no and clean (Page 1 of 1)

Gold plated board, with csp's and 0603 with no clean apetures

Electronics Forum | Wed Oct 02 15:20:55 EDT 2002 | Eric

Is there a steadfast rule of thumb for a good solder joint on an Enig Gold board. I come across this number 217C when discussing BGA profiles. Is this a published number? I sure could use a reference. Anybody feedback is appreciated.

Gold plated board, with csp's and 0603 with no clean apetures

Electronics Forum | Wed Oct 02 16:13:05 EDT 2002 | babe

Have you had your solder pot tested? I find that levels of contaminants can rend a solder joint that dull look.

Gold plated board, with csp's and 0603 with no clean apetures

Electronics Forum | Thu Sep 26 14:43:43 EDT 2002 | Jim M.

unsure of what solder spec. your working to?.IPC/EIA J-STD-001C, Section 9.2.4 clearly states dull, matte, gray or grainy appearing solders are accpetable depending on your process and if the acceptability of the neaxt paragraph is met.IPC 610 and J-

Gold plated board, with csp's and 0603 with no clean apetures

Electronics Forum | Wed Oct 02 18:18:58 EDT 2002 | davef

The steadfast rule of thumb is: In order to get reliable reflow, you need to be at or higher than [liquidus + 20�C] for about 5 to 10 seconds, rather than those old "60 seconds above 183�C" guideline. This provides for setting your peak based on the

Gold plated board, with csp's and 0603 with no clean apetures

Electronics Forum | Thu Sep 26 11:44:23 EDT 2002 | abelardo

Hello everyone out there in the SMT world. I have a dilema I'm currently running a board that has 3 csp's with a .75 mm. ball pitch and .3mm ball size. And 2 qfp's-160. The stencil is 4 mils thick and I'm using a 63/37 solder paste. My reflow prof

Gold plated board, with csp's and 0603 with no clean apetures

Electronics Forum | Thu Sep 26 20:43:51 EDT 2002 | davef

"OK. If the connection doesn't look like I expect it to look, how do I know that the metallurgy is correct?" Comments are: * There are no pictures that will get you though this. * You should expect that gold that is dissolved in Pb/Sn solder to make

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