Electronics Forum | Sat Jul 02 10:27:19 EDT 2022 | madisreivik
Hello ! I got exp only with leadfree HASL, but maybe the same problems apply. Also, the leaded HASL has probably lower process temperature. This could be copper, which has settled to the tank bottom. With leadfree, the copper is removed from molten
Electronics Forum | Fri Feb 23 09:35:36 EST 2024 | emanuel
We have the standard profile as a template made according to the solder paste specs. For some boards we measure the result at 2 points, on the board itself and on top of a sensitive SOT263 module and adjust accordingly. The solder paste is well kept,
Electronics Forum | Thu Mar 23 21:35:43 EST 2006 | Wave Master Larry
Eutectic is were the deltas of the oven melt the paste. At least that what the maintenence guy tells me but hes alway gooped up on some goop, so who really nows. No lead is simple. With all the cell phones you guys by nowadays, the gabage heaps ar
Electronics Forum | Fri Nov 02 09:09:56 EDT 2012 | davef
Sure you can use it it with leaded HASL. Recognize that ... * Your Sn42/Bi58 will no linger be Sn42/Bi58 * Your leaded HASL will no longer be the same leaded HASL that walked in the door to your plant * Lead from HASL coatings can diffuse through the
Electronics Forum | Tue Aug 31 17:36:36 EDT 2004 | davef
NO-LEAD COMPONENTS WITH LEAD SOLDER ISSUE: We agree with Russ. We've dicussed this several times on SMTnet. For instance, look here http://www.smtnet.com/forums/Index.cfm?CFApp=1&Message_ID=25394 LEAD COMPONENTS WITH NO-LEAD SOLDER ISSUE: We disa
Electronics Forum | Tue Aug 22 16:02:07 EDT 2000 | Dr. Ning-Cheng Lee
If the thermal mass of the products is small, a tent-shaped profile is recommended, with peak temperature around 240C. The hottest spot on board should be less than 250C. However, if the thermal mass of the product is large, such as a large server PC
Electronics Forum | Mon Apr 12 19:22:54 EDT 2004 | russ
So if I get this right, your customer wants you to run this product as pb free even though it is not. In order to run this as pb free you need to run pb free paste. If you use 63/37 paste at the higher temps I believe that in addition to the compon
Electronics Forum | Tue May 03 09:47:03 EDT 2005 | denismeloche
We sell rework stations for all kind of components and boards. The systems are designed to fit a particular size board and it's very difficult to design a one size fits all system. I personally have a lot of experience reworking high mass, high hea
Electronics Forum | Fri May 12 07:53:40 EDT 2006 | egrice1
Sheldon, Tip life is directly related to temperature, IRON plating thickness on the tip, Alloy composition used and operator technique. High tin contents in lead free alloys attach the tips. Poor wetting and higher melting temperatures cause us
Electronics Forum | Wed Mar 12 13:16:42 EDT 2008 | ipdisplays
Hi All, I know some of this has been covered - but nothing recent that I could find - so please bear with me... Seems like the used/refurb market is kind of fluid so would like some current thoughts.... I'm looking to setup an inexpensive prototype
