Electronics Forum: leaded (Page 261 of 790)

RoHS and stencils

Electronics Forum | Fri Mar 03 11:56:51 EST 2006 | Brad

We have a customer that is transitioning to RoHS compliant assemblies. Their layouts are not changing from the old boards to the compliant ones so the stencils will remain unchanged. They are going through a transition phase where both will be buil

Tin Lead BGAs in leadfree paste

Electronics Forum | Fri Mar 10 10:46:45 EST 2006 | Loco

You have 2 groups giving us 'evidence' here: 1. the research companies who will do anything to scare us, just to make sure more research will be done, if they said everting was fine they'ld be out of a job in a sec. Ex: look at that paper, a leaded

Flux Residues In Lead Free Wave Soldeing Process

Electronics Forum | Sat Mar 25 07:43:20 EST 2006 | smartasp

Hi You all We use no clean flux in our lead free wave soldering process and have unacceptable residues. The provile is spot on. If I reduce the flux amount the holes won't be filled and border on the IPC II specs. The customer does not accept partia

Gold Flash with QFN28 problem

Electronics Forum | Thu Mar 30 08:38:58 EST 2006 | Dan

We have this panel that is Gold Flash. Am I correct in assuming this is technically a lead-free panel then? We are running a WS paste, and the QFN28 has balls of solder instead of a fillet. My Max temp is 216, and the TAL was between 52-57 secs with

Seeking very low volume production reflow oven

Electronics Forum | Mon May 22 16:58:37 EDT 2006 | flipit

The best small reflow oven that I have ever used is the Sikama brand. Unfortunately they are not inexpensive and you will pay almost as much as you would for a full size reflow oven. Interestingly this is the oven I qualified for lead free and othe

IPC-A-610D Question

Electronics Forum | Tue May 02 14:56:57 EDT 2006 | Tim

8.2.5.5 Flat Ribbon, L, and Gull Wing Leads, Maximum Heel Fillet Height (E). For class 3 the heel fillet cannot touch the body of a plastic component, except for SOICs and SOTs. Why is my question? What type of failure will be the result of solder

Lead Free and ICT

Electronics Forum | Sat Jun 03 03:35:16 EDT 2006 | mika

Yes we do have a problem with this. We have by now investigate numerous lead/RoHS PCBA:s The RoHS boards are by far the most difficult one's to probe and test. Our people at the "test area" including Flying Probe and ICT they spend a lot of time to t

First documented case of tin whisker formation

Electronics Forum | Fri May 12 12:03:07 EDT 2006 | rlackey

Great, just what we need - Psuedo science. To paraphrase: We tried 99.5Sn/0.5Cu & it didn't work so we couldn't be bothered to try any other lead free alloy. So give us an exemption else we'll bury you up to the neck in the stuff. I have no probl

First documented case of tin whisker formation

Electronics Forum | Mon May 22 10:50:52 EDT 2006 | patrickbruneel

Hi Rob, I'm not sure if you're kidding or not Are you moving to Australia? Here's a link to the text John Burke used to write the EU commission for an exempt on lead in solders on environmental grounds. (Supporting documentation links on the bottom

Changing a wave over to lead free

Electronics Forum | Thu May 18 16:27:53 EDT 2006 | bman

I don't have any experinence with this, but my concern is that you are limiting the amount of contamination your pot can absorb before you ever run a board through. What I mean is that even if you are able to drain all but about a kg of the old sold


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