Electronics Forum | Fri Jul 09 19:35:05 EDT 1999 | Earl Moon
| Hi Carol- | What you are asking for can be done. Variables you must account for include the paste viscosity, dispensing head speed, dispenser height relative to board surface, and needle size. You can use most any semi-automated system such as Ca
Electronics Forum | Wed Jul 07 14:14:03 EDT 1999 | Dave F
| Is anyone aware of some guidelines regarding through-hole in SMT pads? One of our designers wants to add through-hole leads in some SMT pads for an inductor. The size of the hole is 0.032 inches and takes-up approximately 25% of the pad area. Th
Electronics Forum | Thu Jul 08 12:33:52 EDT 1999 | Mike Demos
Thank you all for your replies. Thanks to your replies and backup from the IPC-SM-782A (section 3.6.3.2) and James Blankenhorn's "SMT Design Rules & Standards," the designer has agreed to provide adequate clearance between the via and the pad. I wi
Electronics Forum | Tue Jul 06 12:45:28 EDT 1999 | JohnW
| I've heard that use of VOC free flux with wavesolder fixtures can be challenging due to entrapment of water in the fixture. | | Is anyone out there successfully running VOC free with wave fixtures & did you experience problems? If so, how did you
Electronics Forum | Tue Jul 06 13:02:41 EDT 1999 | John Thorup
| | I've heard that use of VOC free flux with wavesolder fixtures can be challenging due to entrapment of water in the fixture. | | | | Is anyone out there successfully running VOC free with wave fixtures & did you experience problems? If so, how d
Electronics Forum | Mon Jul 05 18:40:24 EDT 1999 | JohnW
| Dear All, | | We are a medium sized Electronic manufacturing company manufacturing computer motherboards and Telecommunication products. We have a big debate going on within our company regarding the defect rate measurement technique. | | At p
Electronics Forum | Sat Jul 03 13:49:36 EDT 1999 | JohnW
50% reduction in time. One draw back, the availability of feeders... You need 280 feeders max to change over a max capacity of 140 feeder machine (or a variance of a product mix vs. part numbers); then there's 8mm, 12mm, 16mm, sticks feeders that c
Electronics Forum | Mon Jun 21 16:11:41 EDT 1999 | John Thorup
| | I am finding that some of our IC's are coming from the supplier with the humidity gauge in the bag reading 10-20%. Has anybody done any tests to determine what humidty level in a package will cause problems during reflow? | Usually a proper m
Electronics Forum | Sun Jun 20 16:45:48 EDT 1999 | Chrys Shea
I dug through my big box of office crap and found the disk with my technical papers. I posted the one on process control in the SMTNet library. It covers a lot of ground on what causes defects in the wave (too much or too little of something), and
Electronics Forum | Mon Jun 21 12:08:17 EDT 1999 | C.K.
| I dug through my big box of office crap and found the disk with my technical papers. I posted the one on process control in the SMTNet library. It covers a lot of ground on what causes defects in the wave (too much or too little of something), an
