Electronics Forum | Mon Dec 11 08:49:03 EST 2006 | billyd
All: Good morning. I'm writing this morning trying to find out what, right now, is the most used solder alloy out there, industry wide, for lead free applications. I'm talking strictly for reflow, not wave. I have to assume SAC305 is by fa
Electronics Forum | Thu Dec 21 21:37:19 EST 2006 | Jack
Hi Pavel, Real Chunks, Thanks for your valuable inputs..Selecting the correct location for board profiling is critical in determining the solder joint quality. Am I right to say TC wire attachment locations priority should be as below: (1) Thermal
Electronics Forum | Mon Mar 05 16:16:08 EST 2007 | Mark
Hello, We are having issue with one of the customer board. This is 10 layer PCB FR4 with black solder mask. Coating Ni/Au. Soldering leadfree. We are using 7 zones air reflow oven (zones top&bottom). We have bed solder flowing for this boards. T
Electronics Forum | Tue Mar 13 08:04:28 EDT 2007 | Cmiller
We have used thousands of them with no problems. They will not aid in "connector retention" unless you have a shear force at exactly the right angle. This is an advertising joke. They will help with alignment of the connector. Open your holes up so t
Electronics Forum | Thu Mar 29 08:46:23 EDT 2007 | realchunks
Well I DO KNOW! Hi aj, 100% on the lead pads and 50% reduction on the center pad if you do not use thermal vias. If you do use thermal vias, you may need to increase the amount of paste needed, but not by much. 50% will be a good start. After re
Electronics Forum | Wed Aug 29 11:07:39 EDT 2007 | mikecollier
I am being asked to perform the same evaluation now with a Au/Pd termination varistor. We currently use a Pb/Sn process with an RMA flux. The manufacturer of the device recommends going to a 2% silver paste. What is the intended advantage with 2%
Electronics Forum | Wed Apr 18 16:41:43 EDT 2007 | patrickbruneel
Look at page 8 paragraph 22 This exempt was approved by the TAC June 22, 2006 http://www.emsnow.com/cnt/files/white%20papers/Status_of_EU_RoHS_Exemptions.pdf The exempt was granted by request from both Swatch and Sony for tin whisker formation on
Electronics Forum | Wed May 16 11:40:11 EDT 2007 | stepheniii
I test pdb-boards on the mat it ain't work! Wrong > mount of bolts being outputted. is have something > to do witfh the rohas soulder on them? I will take a stab at translating. I test PCBs on a static mat but the test does not work. The output
Electronics Forum | Fri Jul 13 11:33:54 EDT 2007 | realchunks
Just starting and already responsible for product quality and machine adjustment? Wow, you poor bastard. Ok, I will assume this problem happens on the bottom side of the board with a thru-hole IC. The short occurs on the side that doesn't have the
Electronics Forum | Mon Jul 23 12:31:03 EDT 2007 | gmoritz
Have you tried running it in step mode? Yes, and more. The installer asked me to run a few tests: 1> Intentionally make the machine miss insert a part then put a part in manually to see how the leads align to the cutter head. 2> Push the re
