Electronics Forum | Wed Apr 21 00:35:31 EDT 1999 | Scott Cook
| Netters, | | When I reflow a PCB there is a discoloration of silkscreen and mask. It appears if Profile is too hot! But I dont think so, maybe I'm wrong? | | 1. Kester 293 no clean | 2. 2.1 C/s for 30s to 150 C | 3. .5 - .7 C/s for 60s to 185
Electronics Forum | Wed Dec 15 16:38:42 EST 2004 | patrickbruneel
Here's my 10 cents Studies done in the 1980's concluded that pure tin was prone to whisker generation. A tin content lower then 70% became exempt from this phenomenon. I have never seen or done any studies on the impact lead had in reducing the pote
Electronics Forum | Tue Apr 09 21:40:26 EDT 2002 | ianchan
We are a local enterprise with limited resources, just like you described, so hope this experience sharing helps : we place a production Visual Mechanical Inspection (VMI) inspector at the end of each Reflow Oven area, complete with magnify scope 30
Electronics Forum | Fri Jul 16 03:11:23 EDT 1999 | SPEZZAFERRI Luca
| | | Hi, | | | | | | I need some urgent informations on stencil design guidelines on how to perform epoxy printing on 0603 and 0402 components. Could anyone help? ( Reflow process is not possible because of some other constriants) | | | | | | Sec
Electronics Forum | Mon Dec 11 20:44:37 EST 2006 | davef
Title : LEAD-FREE WAVE SOLDER FLUX EVALUATION Author : Michael Havener Author Company : Benchmark Electronics, Inc Date : 09/25/2005 Conference : SMTA International Abstract : The European Union�s deadline to ban lead in electronic pr
Electronics Forum | Tue Nov 14 22:01:07 EST 2000 | Dave F
I'd love to get to the point that I could discuss the impact of flux on dross formation. Until then, I fight with proper solder pot temperature, maintaining enough pump speed, and solder contaminants.
Electronics Forum | Fri Oct 05 11:14:14 EDT 2007 | Frank
Yeah, but when the operator drops regular solder bars into your lead-free pot, does that mean I should paint my bars, too?
Electronics Forum | Fri Jul 16 05:24:40 EDT 1999 | Chris May
| I'm looking into vision inspection equipment to automatically inspect SMD placement and solder joint quality. Does anyone have any recommendations or know of any commonly used equipment? Do other manufacturers use vision systems at their inspecti
Electronics Forum | Tue Sep 30 20:55:14 EDT 2008 | davef
Residues from different no-clean fluxes produce different levels of variation in RF circuits. Some no-clean fluxes work fine. Following this, a no-clean flux can produce different levels of variation in RF circuits depending on the process setup.
Electronics Forum | Tue Oct 03 18:41:16 EDT 2006 | C.K. Flip
With recent implementation of VOC-Free flux in our shop, we've experienced little solder fines/balls on the above combo of VOC-Free, Water Based, and glossy to semi-glossy mask finish on PCB's. The solder balls show up on close conductor spacings, ~
