Electronics Forum | Fri Nov 25 05:16:44 EST 2016 | slavek
Hello, I want to ask on suitable temperature profile for PCBs with ENIG final surface finish. I know that it is complex question with many unknowns. When the PCB will be standard 1,5 mm 35/35 Cu and the amount of components will have any influence o
Electronics Forum | Wed Jan 17 07:28:29 EST 2007 | davef
Look here: http://www.smtinfo.net/Db/_Reflow%20Soldering.html
Electronics Forum | Wed Jul 13 14:50:29 EDT 2005 | rameshn
Dear Sir, We are manufacturing Computer Motherboards & Networking products (which are having 2 to 3 BGA Chips onboard) in our plant. we are having 2 nos of HELLER 1800W model Reflow Ovens. this model reflow oven is having 9 heating zones at both top
Electronics Forum | Mon Jul 18 02:47:27 EDT 2005 | grantp
Hi, It sounds like your a little new at profiling, and can be difficult to do well. We purchased a KIC profiler that has software that will take your profile data and tell you the best oven temperature settings and conveyer speed to use. You need
Electronics Forum | Thu Jan 27 14:16:14 EST 2000 | Tuan Bui
I've tried Indium NC-SMQ92(96.5Sn 3.5Ag) on these MCMs and achieved only marginal wetting on pads and parts. The good wetting is what I try to achieve, shiny is what my engineers want (Prototype environment). Does pre-cleaning the PWBs in ultrasonic
Electronics Forum | Thu Jan 27 14:49:53 EST 2000 | Glenn Robertson
Tuan - One of the reasons I suggested pre-tinning (aside from the negative effects of Gold on appearance and reliability) is the known slower wetting of Sn/Ag and Sn/Cu alloys as compared to Sn/Pb. If you don't have to be Lead-free, the high Lead
Electronics Forum | Fri Jun 06 04:52:21 EDT 2003 | kevyeoh
Hi all, I am just wondering is there any other Lead Free Standard Profile for IR reflow besides the standard provided by Jedec ? What if the profile that i use is different from the one provided by jedec ? Lets say the peak temperature for Jedec is
Electronics Forum | Fri Jun 06 22:10:11 EDT 2003 | MA/NY DDave
Hi John I believe gave a good answer with cautions. The .001 or .1% is the main criteria that internationally means you are Lead-free per JEITA, the EU and NEMI. They sat around at a table and decided is how they got the .1% John did note that yo
Electronics Forum | Tue Mar 13 12:54:58 EDT 2007 | hynergy
You required the process control equipments. 1) Paste Height Checker: To measure the solder paste thickness after printing. 2) Temperature Profiler: To measure the reflow oven temperature whether is within the control spec.
Electronics Forum | Wed Jun 11 17:16:12 EDT 2003 | MA/NY DDave
Hi I had to poke around awhile to see what you meant. I think you were at an advanced level where IF he knew the MSL ratings of his devices he should constrain his profile within the component mfgs tests for exposure to various profiles, or at leas
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