Electronics Forum | Tue Feb 19 12:28:26 EST 2019 | slthomas
Presumably you're talking about lead free, but you don't say. Heller can probably provide you with a starting point, as rob has already pointed out, but you do need to develop the capability to perform profiling yourself. That oven should have ECD
Electronics Forum | Mon Aug 25 22:14:34 EDT 2003 | davef
You need a nylon with a heat deflection temperature [heat distortion temperature] - 0.45MPa ( C ) similar to your reflow peak. The HDT of the nylon in your connector is probably ~200*C. For more, look here http://www.tycoelectronics.com/environment
Electronics Forum | Fri Mar 29 11:02:04 EDT 2019 | robl
Not sure it's always a great route as the smaller ovens are going to struggle to get a perfect profile for a consistent result, especially on bigger boards with higher layer counts and mixed technology. You may want to take a quick look at a batch va
Electronics Forum | Tue Jun 21 07:39:23 EDT 2005 | davef
There's a fair amount of material on cooling rates for lead free on the web. Look here: * http://www.speedlinetech.com/docs/Cooling-Slopes-Lead-Free-Reflow.pdf * http://www.findarticles.com/p/articles/mi_qa3776/is_200412/ai_n9473486 * http://www.m
Electronics Forum | Wed Aug 09 01:58:51 EDT 2006 | tk380514
OK i have a question: I have a prototype BOM and i suggested the customer that we use Paste-in-hole for the 1 connector that they want to use, but its quite high component and not very wide: http://www.molex.com/pdm_docs/sd/022272051_sd.pdf If i u
Electronics Forum | Wed Jan 04 13:59:14 EST 2006 | chunks
Ask your customer why they need this? Show them your process. Then bury them in their own unknowledgeable requests. It is pretty scary how many papers are also written about how easy it is to reflow a lead-free BGA with regular leaded paste. ht
Electronics Forum | Fri Nov 22 13:41:55 EST 2002 | cristiano
We are experiencing problems with a smartmedia connector during the reflow solder process. The connectors stay a little bended after the oven. In this case the middle leads are not solded, because they stay with no contact on the board. The conector
Electronics Forum | Mon Sep 11 14:58:16 EDT 2006 | cuculi54986@yahoo.com
Steve, Let me guess, you were using this one: http://www.panasonic.com/industrial/components/pdf/abd0000ce10.pdf That part sucks. They have a newer part number that is supposedly "reflow-friendly". Unfortunately, I can't convince our quality de
Electronics Forum | Wed Jul 03 15:40:17 EDT 2013 | davef
Shear tests are [in my opinion] senseless. The shear stress you measure depends more on the shear rate and on the point where the force is applied than on the grain structure. When shearing a component, you not only apply shear stress, but also roll
Electronics Forum | Wed May 19 08:18:59 EDT 2004 | davef
Here�s our thinking on the subject: http://www.smtnet.com/forums/Index.cfm?CFApp=1&Message_ID=27586 For further discussion on the "being hosed by the physics": http://www.cooksonsemi.com/tech_art/pdfs/Controlling%20Warpage.pdf
