Electronics Forum | Wed Mar 16 20:12:12 EST 2005 | bkd
Does anyone knows any vendors that supplies jedec precondition tray that could stand up to 270�C peak reflow temperature.
Electronics Forum | Thu Dec 14 04:42:11 EST 2017 | jineshjpr
Can anybody suggest how can I achieve good solderability in convectional reflow oven If I reduced Convection Air Speed 80%. The whole purpose is to reduce 0402 LED tilting in the convectional reflow and the PCB having QFN with 60 to 120 sec soak, 30
Electronics Forum | Wed Jun 11 09:35:07 EDT 2008 | grics
Out of curiosity, what is your top side peak temp @ reflow? Have you inspected the boards prior to SMT (at your 5DX machine?) Also, have you tried to run the board through reflow with out any parts or bga placed and inspected? I how long are you in
Electronics Forum | Sun Nov 20 01:27:21 EST 2005 | C. Kolokoy
Try an experiment where you profile the assembly with 3 consecutive boards in the oven spaced just 1" apart versus just 6" apart and then 12" apart. You figure most ovens have about 12 - 16" heating zones, so for your typical 8"x8" PCB, you'd have w
Electronics Forum | Fri Mar 07 08:47:45 EST 2003 | msivigny
Hello Peter, In reflow, running a profile and collecting thermal data does not necessarily make it easy to calculate and determine machine capability. On the contrary to your desires of simplifying the process, determining machine capability on an ov
Electronics Forum | Wed Jan 21 22:35:01 EST 1998 | Scott
| Is there anyone who can tell me what is the maximum allowable soldering temperature when soldering a TQFP (Thin Quad Flat Pack) device in a reflow oven? We recently used a CY7C375i in a TQFP160 package and we experienced warping (bending) of this c
Electronics Forum | Fri Jan 28 19:24:15 EST 2011 | jlawson
Should contact Rehm Thermal they have a whitepaper on pros and cons of Vapor Phase vs Convection.... Vapor phase traditionally targeted heavy PCB, large mass products better then lighter ones, due to ramp rate control being harder to attain vs say a
Electronics Forum | Fri Jan 28 09:03:43 EST 2011 | ldavis
Shannon, We have been using VP for all of our lead free production since 2007. Here are the items I can think of off the top of my head. Pro's - small footprint, minimal profiling needed once machine is understood, oxygen free soldering process, s
Electronics Forum | Mon Jun 18 13:29:34 EDT 2001 | nifhail
What is the recommanded profile for board which consist of 0402 & 0201 comps. to reduce the effect of tomb-stone. Slow ramp rate ? how slow is considered as slow. Soak time 60 or 120 C,at which end should I stick to? what is the best time before reac
Electronics Forum | Sun Aug 08 20:59:55 EDT 1999 | Dreamsniper
| | | What oven temperature should be used to reflow solder (Sn63Pb37) on a PC board (0.075" to 0.100" thickness) in 5 to 10 minutes? | | | | Profiling - tedious but important. As said, start with the paste manufacturers recomendation which is usua
