Electronics Forum | Thu Nov 08 10:52:22 EST 2012 | Bryan Ng
I am considering using high-temp ball Sn10Pb90 + eutectic solder paste for MLC reflow (no underfill). You can see that there is no Intermetallic bond for the paste and the balls. Under high stress/shock condition, the solder joints develop micro c
Electronics Forum | Mon Nov 12 15:21:09 EST 2012 | davef
High-temp ball Sn10Pb90 + eutectic solder paste is common place for MLC reflow. Temperatures necessary to alloy the high-temp ball Sn10Pb90 and eutectic solder would be high enough to compromise interposer, board and many components. What are your:
Electronics Forum | Wed Nov 20 10:50:49 EST 2002 | dphilbrick
Kester has a special alloy for high temp soldering. Alloy 123. I would think that if you coocked 63/37 to 360c you would have a pot of dross in no time! Doug
Electronics Forum | Wed Nov 20 07:50:00 EST 2002 | aerineng
Hi, I'm an SMT refugee working in component manufacture - hey, times are hard! I've been asked by a customer to test some of my parts at high temperature on the wave - up to 360 deg Celsius. I've checked my wave and it's only capable of getting up
Electronics Forum | Wed Feb 25 21:37:12 EST 2015 | dinhhuunam
Hi Bartel , 1.1 Profile Solution to Cold Soldering Cause for Cold soldering The peak temp of reflow is too low. The preheating temp is too high and it takes too long Solution Lower the preheating temp and increase the peak temp in the reflow zone
Electronics Forum | Fri Sep 22 12:37:18 EDT 2000 | jonyoder
I am having problems with SMT electrolytic capacitors expanding and changing values after going through our reflow. The reflow profile we use includes temperatures of 200 deg C for 60 seconds and 230 deg C for 30 seconds. We need to use this profil
Electronics Forum | Wed Aug 30 07:18:27 EDT 2000 | russells
Can you use 96s solder wire on a pcb that has been plated with standard 60/40? if so what are the effects on the proerties of the 96s? If you cannot mix the two solders is there a more effective way than braid of removing the 60/40 from the plating?
Electronics Forum | Wed Aug 30 16:00:42 EDT 2000 | Dave F
Russells: You can mix the two solders you mentioned, assuming by "96s" you meant "96Sn / 4Pb". If you heat the two tin / lead alloys to a liquid state, you�ll form a tin / lead solution with properties different from either of the two solders. The
Electronics Forum | Mon Dec 11 15:12:20 EST 2000 | accuspec
we are using alphametals no clean 95sn/5ag CL775 paste. After reflow there are solder balls on the board. mainly are around the cap. We are using a conceptronic concept 60 air. There are 4 zones with 8 chambers. We are not sure what the profile
Electronics Forum | Tue Mar 09 23:34:35 EST 1999 | Clarissa Ortner
We are starting up an SMT line with a printer and convection oven.... The area we are considering for the printer is totally uncontrolled for humidity, temperature and even cleanliness. We are working on the filters to keep particulates down, but I
