Electronics Forum | Thu Jul 01 16:43:52 EDT 1999 | Dave F
| | | Could somebody tell me what means Leaching, ie: "Leaching of terminal end face exposing the ceramic"? | | | | | Roberto: Leaching, according to the SMTnet Library of Terms: | | | | Leaching. Dissolution of a metal coating into liquid solder.
Electronics Forum | Wed Sep 01 08:27:38 EDT 2004 | davef
Zinc from the brass [Cu3Zn2] diffuses into the tin causing solderability problems. Just 0.001% of Zn in your solder can render it fit for the scrap heap. So, you need a barrier plate between the brass and the tin. Copper or nickel-plating is commonl
Electronics Forum | Tue Aug 10 09:26:49 EDT 2004 | davef
You should be able to solder to brass - check with you flux supplier to get their recommendations. The flux you are using may not have enough activation to breakdown the oxides on the brass surface. A word of caution - brass (copper and zinc alloy)
Electronics Forum | Tue Jan 10 12:17:17 EST 2006 | Rob
Hi, The ROHS compliant parts are usually Matte Tin on the outer terminal plating. There are also 2 further types of metal on the average chip cap - the undercoat metal of the outer electrode & the inner electrode. These are usually the same & are
Electronics Forum | Tue Jan 30 12:58:49 EST 2007 | barryg
We are seeing problems with platinum over silver plated part also. Our main problem is solder splatter under these devices, and voiding at the terminations on parts off the reels.I am curious if you have removed any of these parts and noticed any spl
Electronics Forum | Fri Mar 12 11:59:50 EST 1999 | Ray Morford
AVX and a few other companies make these chip transient voltage suppressors (TVS) parts that are a real *PAIN* to use. According to AVX: "Due to the semiconducting nature of the doped Zinc Oxide (ZnO) ceramic material, SMT TransGuards are no
Electronics Forum | Thu Jul 01 16:57:14 EDT 1999 | JohnW
| | | | Could somebody tell me what means Leaching, ie: "Leaching of terminal end face exposing the ceramic"? | | | | | | | Roberto: Leaching, according to the SMTnet Library of Terms: | | | | | | Leaching. Dissolution of a metal coating into liqu
Electronics Forum | Thu Jul 01 20:56:57 EDT 1999 | Dave F
| | | | | Could somebody tell me what means Leaching, ie: "Leaching of terminal end face exposing the ceramic"? | | | | | | | | | Roberto: Leaching, according to the SMTnet Library of Terms: | | | | | | | | Leaching. Dissolution of a metal coating
Electronics Forum | Wed Jun 30 11:09:24 EDT 1999 | John Thorup
| | | Could somebody tell me what means Leaching, ie: "Leaching of terminal end face exposing the ceramic"? | | | | | Roberto: Leaching, according to the SMTnet Library of Terms: | | | | Leaching. Dissolution of a metal coating into liquid solder.
Electronics Forum | Thu Sep 16 18:07:16 EDT 1999 | Earl Moon
| We have some SMT components with gold plated leads. They're actually LCC led packages. A good solder alloy to use would be Indium / Lead to reduce tin dissolution into the gold and avoid the resultant brittle intermetallic compound. However, a reco
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