Electronics Forum | Mon Apr 25 12:19:21 EDT 2005 | siverts
Hi all, We produced a RoHS (lead-free) prototype order recently, and there was some components that we needed to replace on a couple of PCBA's. We found it very hard to do this even with the new solder iron. The components was just small RoHS SOIC's
Electronics Forum | Thu Dec 01 00:34:15 EST 2005 | pyramus
Guy's another question, how about any recommendation what type of adhesive to use as underfill for BGA during lead free process? Currently, we are only using Loctite 3609 & 3515 as adhesive we use 3515 as BGA underfill during normal leaded process s
Electronics Forum | Wed Nov 07 15:01:18 EST 2012 | nikyta
Thanks Dave , my question is about Spopov want to try "Lead Free" SnBi (but uses it on Leaded finishes), but is worry about its low melting point (at this point, no longer 138 degrees as he wrote, but rather in an unknown and unpredictable range bet
Electronics Forum | Tue Jul 24 03:26:45 EDT 2001 | winnifred
Dr. Lee, For lead-free wave soldering, we are recommended to use SnCu0.7, why not 0.8 or more ?? Since SnCu0.7 has eutectic melting point at 227 deg C, does it mean with more Cu or less Cu, the melting point will be higher ?? Also, in lead solderin
Electronics Forum | Thu Aug 17 09:38:28 EDT 2006 | pjc
Having the last two zones at the reflow temp (spike) is typically done on long ovens (10 zone) running at high conveyor speeds. This enables you to achieve peak temp and TAL as per the solderpaste specs at high production rates. Concerning reverse sp
Electronics Forum | Mon Aug 05 11:26:03 EDT 2019 | pace_worldwide
Concerning your desoldering equipment, we have made major improvements to prevent solder clogging on PACE Solder Extractor handpieces. Replacing the venerable SX-80, the new SX-100 (and SX-90) Solder Extractor has been improved so that is does not cl
Electronics Forum | Tue Apr 27 15:50:46 EDT 1999 | Justin Medernach
| Another basic soldering question. I notice that lead-free solders have become required for plumbing applications due to legislation. In a local hardware store, I noticed the existence of lead-free solders (based upon tin-copper I think) with a me
Electronics Forum | Thu Aug 20 18:11:53 EDT 2009 | smt_guy
Hi davef, thanks again for that enlightenment. I'm just curious about what's happening with the solder joint of the said process. Again to add to my unending queries for now: So on top of that copper is a thin layer of lead-free solder composition
Electronics Forum | Fri Oct 08 08:26:03 EDT 1999 | Carol Zhang
| | | I have a board, 4 spacers needed to be soldered on the board | | | first with the normal 62Sn37Pb alloy. Then, capacitors are manually soldered on the boards. The density of the board is quite high. If we wave soldered capacitors first, ther
Electronics Forum | Thu Mar 13 14:12:31 EDT 2014 | davef
You're creating a new alloy on the surface of your board. The alloy will have a melting point determined by the constituent metals of the alloy. Your alloy consists of: * Lead-free HASL solderability protection on the board * Lead-free solder paste *
