Electronics Forum | Tue Jan 14 07:33:16 EST 2014 | leardkattiya
Hi I have solder paste that suppose to be stored to 0 - 10 degree celsius. However due to broken fridge, we decided to stored on -40 degree celsius freezer. Does the solder paste still good to be use? Please help.
Electronics Forum | Wed Jan 15 03:07:47 EST 2014 | aflex
If the supplier has prescribed the storage temperature between 0 - 10 degree celsius, then it means that it work effectively if stored in that temperature range.
Electronics Forum | Wed Jan 15 08:47:49 EST 2014 | leardkattiya
Just completed doing the evaluation. The reflow looks good. No unreflow observed. Meaning to say the solder pastecan be use right. Thanks.
Electronics Forum | Tue Jan 14 13:21:17 EST 2014 | emeto
This is according to Kester What happens if the paste gets too cold? At temperatures below -15oC (5oF), one or more components of the solder paste may crystallize, producing a non-homogeneous appearance to the solder paste. Such non-homogeneity may
Electronics Forum | Tue Jan 14 13:26:28 EST 2014 | emeto
You can also see this: http://www.efd-inc.com/NR/rdonlyres/7C8592BD-70D0-4A0A-91C4-2A2743EB6710/0/EFDFrequentlyAskedQuestions.pdf
Electronics Forum | Tue Jan 14 08:48:09 EST 2014 | davef
I don't know. What does your paste supplier say? You can run tests * That you used to qualify this paste in the first place. * According to IPC J-STD-005A Requirements for Soldering Pastes * Using your toughest stencil to print this paste on a bare c
Electronics Forum | Fri Jan 09 23:53:48 EST 2004 | Dean
How high are we talking? 1000 Celsius? KIC Thermal Profiling double sided aluminum profiling tape. I have used at an extreme application of 240 to 300 degrees celsius for 18 minutes. With up to 30 passes with no visible degree of deterioration.
Electronics Forum | Wed Mar 12 15:26:46 EDT 2014 | dan_ems
Hello, in my SMT process I have some problems with the solderability (look like dewetting) on a PCB with finish HASL Lead Free with a composition that is melt at 230 degree Celsius. My oven is with vapor phase and the peak temperature is 230 degre
Electronics Forum | Tue Jan 25 20:15:04 EST 2000 | H.J. Kim
Is anyone out there using "single profile" on high mix production? Or would you recommand suitable reflow oven for that? Some oven manufacturers would announce for that. We have tested four different b'ds on their oven. Results(delta t) were 20 to 2
Electronics Forum | Fri Jul 12 10:33:02 EDT 2002 | Gary Bremer
Does anyone have experience using Sn43Pb43Bi14 solder on high performance circuit boards that are subjected to temperatures from -55� Celsius to +85� Celsius and vibration requirments at 6g? What companies/industries do you know that are using this s
