Electronics Forum | Thu Dec 08 18:59:04 EST 2005 | KEN
Is this a wire dip tinning process? If yes, then your flux is probably trapped under the insulator, causing corrosion. BAD BAD BAD (hopefully you don't make wire harnesses for air planes or passenger trains). More info please.
Electronics Forum | Tue Jan 03 07:12:22 EST 2006 | Slaine
on church copper roofs they call the green stuff verdigree (dont know if ive spelt it right)
Electronics Forum | Sat Dec 10 14:20:32 EST 2005 | adlsmt
I have seen a similar problem once about 15 yrs ago. Someone decided to try a water wash flux for tinning wires. Bad idea! The wires were dipped in the flux, then in a solder pot. As the lead tin's it forces the flux in the strands to move up the wir
Electronics Forum | Thu Dec 08 22:25:23 EST 2005 | davef
Grant Copper Oxide [Cu2O]: Color is red to a deep red that can appear almost black. Luster is adamantine or submetallic to dull or earthy if massive. Transparency: Crystals are transparent to translucent. Look here: http://mineral.galleries.com/min
Electronics Forum | Wed Apr 10 11:45:08 EDT 2002 | mwoodall
We measure the thickness of solder paste printed onto PCBs as a control of the printing process. Generally 6 thou stencils are used and give between 6.2 and 6.8 thou. What thicknesses do other users get? Cheers! Mark
Electronics Forum | Wed Apr 10 22:46:04 EDT 2002 | davef
On SMTnet, we've discussed the the frailties of controlling paste height, when volume is a more telling measure. Sometimes if you seperate too quickly, the paste tries to stay attached to the aperture walls. This creates a 'U' shaped deposit with r
Electronics Forum | Thu Apr 11 04:03:28 EDT 2002 | mwoodall
The Alpha metals Hi Check 500 is used to measure paste deposit thickness. The paste height is found from a micrometer reading determined by focussing a beam of light on a track adjacent to a paste deposit and then onto the solder paste. I've measure
Electronics Forum | Fri Jun 16 11:37:15 EDT 2006 | docker
I�m working in Solder paste manufacturing industry and my customer has complained the void issue on BGA pad. I�m internally conducting the void test on BGA pad in my Lab. I used OSP furnish board with Sn/Pb and /or lead free component using Lead free
Electronics Forum | Fri Apr 04 08:49:45 EDT 2008 | ck_the_flip
Define "expired" though... 1 week? 6 weeks? 1 month? 6 months? Unrefrigerated life is generally 30 days. If paste has been stored refrigerated at manufacturer recommended temperatures, what would you guys do, like say, if you owned your own shop
Electronics Forum | Thu Apr 28 09:01:38 EDT 2022 | saberbouras
I have a solder paste fridge; my question is what is the type of this connector so I can use it to attach a warning light. And is it a power source or is it a dry contact relay output?
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