Electronics Forum | Wed Aug 24 11:05:44 EDT 2005 | patrickbruneel
Javi, The reason you have an exemption for your product is because there are reliability concerns for lead free and it is impossible at this stage to guaranty backward compatibility. If a cell phone, TV or radio fails, no lives are at risk, you just
Electronics Forum | Wed Sep 07 10:34:52 EDT 2005 | PWH
Have experienced this on a few different cap. parts. Agree with other postings. Following are solutions to problems we have had: 1) Cracked cap too close to board edge per IPC spec. Designer replaced part with 3 caps in series to eleviate stress
Electronics Forum | Fri Oct 14 09:58:13 EDT 2005 | patrickbruneel
Here's what I believe is happening. The main difference between the HASL boards and the gold plated boards is that HASL boards are pre-soldered. HASL boards need very little flux activity to get good hole fill and the machine settings have a wide pro
Electronics Forum | Fri Oct 14 11:56:49 EDT 2005 | patrickbruneel
Mika, 1.) Is there a maximum board thickness where it would be almost impossible to get a decent hole fil? Answer: The thicker the board the further the solder has to travel and the more you depend on solderability of boards and components, machine
Electronics Forum | Wed Nov 16 18:44:54 EST 2005 | Mike F
A good board used soon after you receive it should not delam. If only a small percentage is doing that I urge you to do some more looking at the board quality while you do the baking. Do a search of the archives on baking boards, Dave F had some good
Electronics Forum | Tue Nov 08 05:00:23 EST 2005 | rlackey
Hi CW, Regarding orientation, yes, your diagram is right - see the following link for confirmation. http://search.murata.co.jp/Ceramy/image/img/A18X/C2EB3C.PDF Regarding information on bending strength you want to talk to your local Murata office
Electronics Forum | Wed Dec 14 12:48:21 EST 2005 | grantp
Hi, A second hand TP9-2U MYDATA could be picked up very low cost, however it will only load a single component at a time, which could be ok for your jobs. However if your running 0402, I am not sure if that model will do it accurately. Your machin
Electronics Forum | Mon Jan 09 13:11:07 EST 2006 | Joe
I assume you're using a no clean Pb/Sn paste, with a metal squeegee. Here are some generic procedures for good printing results for all pastes. Clean and dry the stencil well using alcohol and vigorously rubbing it with lint free towels, blow it off
Electronics Forum | Fri Jan 20 10:21:18 EST 2006 | adlsmt
The temp is not an issue with selective soldering as the SN100C can be used at the same temp we used for tin lead. 260C. Some are using a higher temp, we did not notice any difference in the results with a higher temp. Most people run thier waves a
Electronics Forum | Wed Feb 01 08:12:04 EST 2006 | Chunks
OK, this is easy. You say HIGH fall out, so I can assume 25 or 50%? If so, run 10 without the heat gun and 10 with. This should show you if the heat gun process is the cause or not. If the relay is a surface mount, hand solder them on. If it's a
