Electronics Forum | Fri Aug 08 11:44:44 EDT 2003 | Henry
I am fairly new to wave soldering and production processes, but I have been tasked with coming up with a calculation involving the shear strength of some through-hole leads. The leads are tinned copper and I suspect that tinning reduces the shear st
Electronics Forum | Mon Sep 20 19:46:16 EDT 2004 | pabloquintana
We use Envibar UV 1244 to coat our PCBs after wave soldering. We clean them with alcohol, and then we coate them manually with a brush. Then they are passed through a UV Oven. We have adhesion problems, and we started by looking at the Envibar, but
Electronics Forum | Tue Jun 20 21:55:42 EDT 2006 | davef
Questions are: * What is your concern about this capacitor? * Are you running a leadfree process? * Is the component leadfree? Generally, we are ecstatic when compoents are on tape and not in plastic bags. And if they solder, well, we're dancing in
Electronics Forum | Thu Nov 30 09:51:53 EST 2006 | Loco
Thanks for the replies, it is getting clearer now. We called a PCB supplier and acted if we didnt know what was what, he actually told us its all the same, chemical, flash, immersion, all the same... It is now getting clearer why we are sometimes ge
Electronics Forum | Thu Aug 05 11:02:18 EDT 2010 | davef
Corrosion of soldering equipment!!! That would be the least of our concerns. Propyl Bromide has a flash point of 21*C [70*F]. It's not real stable. It's flammable. It's ready to go at room temperature. Have someone else operate those machines an
Electronics Forum | Fri Aug 19 01:56:53 EDT 2011 | ppcbs
I've been seeing a lot of product come in with what appears to be black pad lately. I've sent stuff out to labs to be told there is no contamination. Contamination or not solder won't wet to it. Regardless of what it is we have a method to remove
Electronics Forum | Fri Jun 07 09:39:06 EDT 2019 | cristian_amlima
I totally agree with you when whe talk about a lead-free process. In my early comment I thought we were talking about a tin-lead process with the pcb pb-free, when the solder paste limits should be respected. That is the motive the temperatures I sa
Electronics Forum | Tue Jan 13 16:01:06 EST 2004 | russ
I believe that solder paste will need to be applied to this part. I have re-balled these in the past in a low volume situation and here is what I did and there appears to be no adverse effects to the component. Get a stencil (I use 8 mil for .032"
Electronics Forum | Tue Mar 09 07:51:12 EST 2004 | Bryan
Hello everyone: 1.I use Kester R244 63/37 solder paste. 2.Stencil thickness 6 mil. 3.Springdale Chipset. 4.PCB finish:HASL 5.Profile:Peak temp.:210~220C,time above 183C:60~90 seconds,time between 150~183C 60~90 seconds. 6.Reflow oven:Heller 1800 Voi
Electronics Forum | Mon May 24 10:45:04 EDT 1999 | John Thorup
| Can anyone help me with the correct baking cycle for removing moisture for PWB's. These are 10 layer double sided SMT. | | Thank You R. J. Klein Wassink in Soldering in Electronics states - 16 hours @ 105C or 40 hours @ 80C in a ventilated oven
