Electronics Forum | Wed Mar 26 17:09:52 EST 2003 | Jos�
For the Resistor Network Array SMT 0402- 8 pads I'm using a Stencil 5 mils Th. with the next appertures : Corners-biggers pads: 24 x 12 mils Center pads : 9 x 24 mils This Appertures are working excelent for the RN's that his appertures are parallel
Electronics Forum | Thu Mar 27 11:49:18 EST 2003 | kenlchin
In printing,the thickness of solder paste perpendicular to the Squegge direction is always lower 1 mil than that parallel to the Squegge direction,so Insufficient Solder may occur.I think you may slow printing speed or widen appertures to resolve it.
Electronics Forum | Wed Mar 26 19:11:52 EST 2003 | russ
Tell us more about your printer. squegge blade type ,speed, snap-off distance etc... You shouldn't have to change apertures for any component based upon its rotation. the parts that are coming out good could they withstand a higher volume print? You
Electronics Forum | Thu Oct 30 22:29:58 EDT 2008 | davef
For most applications, a nice square [or rectangle] pad works just fine. Assemblers ship boat loads of boards with these every day. It's reasonable for tight decoupling capacitor requirement applications to use round or radiused pads for components
Electronics Forum | Thu Apr 12 00:43:38 EDT 2001 | zam_bri
Can anybody gimme some input on the problem I faced currently on 0402 Chip Resistor. At pre-reflow the component are placed nicely but at post reflow, we found the Resistor stands sideway ( both termination, the pad and componant are in contact, fun
Electronics Forum | Thu Apr 12 02:30:18 EDT 2001 | zam_bri
Thanx for your valuable feedback,Eric. Do you mind sharing with me the pad size change that you have made. I mean from what size to what size. I'm measuring mine now...cheers
Electronics Forum | Sun Apr 15 23:12:00 EDT 2001 | Eric Chua
The size i had changed from 55 x 20 mils to 42 x 20 mils. The component size i have is 40 x 20 mils ( 1mm x 0.5mm ).
Electronics Forum | Thu Apr 12 01:23:04 EDT 2001 | Eric C
Check the pad size. I had this issue before due to the pad size too wide. R&D had change the size of the pad and is solve the issue. Before the pad size change, I had rebuild another stencil with the pad opening close to the component size. It won't
Electronics Forum | Fri Oct 01 06:45:36 EDT 1999 | JAX
| Hi, | | We are running 0402 component on the TCM1000 and we find that teher will be missalignment on 0402 Capositor. We have identified that the missalignment is caused by the wrong information from the vision system while doing vision centering.
Electronics Forum | Fri Oct 01 07:25:05 EDT 1999 | Wolfgang Busko
| | Hi, | | | | We are running 0402 component on the TCM1000 and we find that teher will be missalignment on 0402 Capositor. We have identified that the missalignment is caused by the wrong information from the vision system while doing vision cente
