Electronics Forum | Sun Jun 30 20:46:20 EDT 2013 | kumar_antom
HI there, I am having problem on the solderability for the fine pitch lead on SD card holder on this pcb.Have tried different kind of temperature settings on the reflow but the problem still occurred.Pls refer to the attached pictures.And when i jus
Electronics Forum | Mon Jul 01 08:33:55 EDT 2013 | markhoch
A couple things to look at.. Are you using Pb-Free solder? What are the leads of the SD Connector tinned with? Do you have a thermal profiler to use to verify your oven profile? (If not, you may be able to ask a Sales Rep to come in and assist y
Electronics Forum | Mon Jul 01 11:29:02 EDT 2013 | hegemon
I am guessing a lead free process. From the pictures, I don't neccessarily see any issues, perhaps the leads have wicked up a little too much solder, making the joint look a little starved. But I think I see nice toe and side fillets. In the worst c
Electronics Forum | Mon Jul 01 19:57:01 EDT 2013 | kumar_antom
And this process is using a kind of ceramic jigs..... Does this jig absorb much heat that does not dissipate enough heat to the SD card pins ? Thanks
Electronics Forum | Tue Jul 02 03:40:32 EDT 2013 | eniac
kumar, can you explain why in zones 5, 6 and 7 you use different temperature on upper and lower heaters? Do you use a Nitrogen in your reflow oven?
Electronics Forum | Tue Jul 02 21:18:23 EDT 2013 | kumar_antom
HI, She's running on air mode Since its a 7 zone japanese reflow,these were the best settings i could get via profiling Thank you
Electronics Forum | Wed Jul 10 23:29:14 EDT 2013 | kumar_antom
HI guys, Problem solved.....reason is the SD card's location in on the fixed side of the reflow oven,i believe there is not much convection heat blown towards the component.... Pleased to hear if any rgds
Electronics Forum | Mon Jul 01 19:43:44 EDT 2013 | kumar_antom
Hi there, Its a lead free process and the paste that we're using is with this alloy composition : Sn,Ag,Cu,Bi,In.... Pls refer to the attached temp.profile.... This is a mirror Pcb....Same components on both A and B side.... A side doesn't have t
Electronics Forum | Thu Nov 01 17:33:23 EST 2001 | davef
We buy clips and spring tensioners from wave solder pallet manufacturers [ie, EMC Global, Garland, MB, etc]. Search the fine SMTnet Archives for contacts.
Electronics Forum | Thu May 08 09:56:09 EDT 2008 | mjz289
I agree with dlm. We have been using Hakko irons for our lesd free soldering for about 6 months now. They work great and the tips are relatively inexpensive - $9 to $15, plus they last a very long time compared to our previous brand that we used. The
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