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 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 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 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 | Wed Oct 31 12:24:21 EST 2001 | Stephen Zhou
We are designing the SM fixture for small PCB, does anybody know where we can get the spring holder which can hold the PCB to the fixture? Who is the manufacture for this part? Thanks in advance. Stephen
Electronics Forum | Wed Oct 31 14:27:38 EST 2001 | raton
Yup, And they work VERY well. But they don't sell them, they only put them in product that they make. Summit Precision Inc 5825 South 25th Street Phoenix AZ 85040 Contact Mr Dennis Miller (602) 268-3550 Boca
