Electronics Forum | Tue Jan 30 21:14:26 EST 2001 | davef
Suggestions are: * Limit pad width to 0.008" [0.2mm] * Use IPC-7525 Stencil Design Guidelines * Avoid Type 4 pastes, if you can * Slow down your print head to 0.63"/sec [16 mm/sec] * Consider the suggestions on printing by rpereira in the past
Electronics Forum | Wed Nov 17 12:12:30 EST 1999 | Wendy Casker
Well, I was using a quad QSV-1 for boards this size. Not the fastest, but it was able to handle the large boards in a pass through machine. Keep in mind the board thickness, as well. Anything over 0.2" will not fit in the clamps of the conveyors.
Electronics Forum | Wed Jun 11 10:24:23 EDT 2003 | kris
Hi, The percentage of lead (0.1% or otherwise) is still being debated in the EU where the legislation is in place. The industry is pushing for a 0.2% limit,(if lead-free has to be) as it is considered a limit where solder can be recycled economical
Electronics Forum | Tue Feb 08 19:10:09 EST 2005 | DasonC
Lead free is not define as NO lead and "a maximum concentration value of 0.1% by weight in homogeneous materials for lead shall be tolerated." Check below link. So replaced your solder from the pot when exceed 0.1%. http://www.leadfree.org/files
Electronics Forum | Wed Apr 13 21:04:39 EDT 2005 | pdeuel
We have a controlled pressure facility. When the pressure is set at 0.2 lbs above outside our security doors that open outward do not close by themselvs causing alarms. Our facility remains dusty under and on equipment because of conditions listed on
Electronics Forum | Wed Feb 22 16:55:04 EST 2006 | mark
Hi, We are not using vaccum caps. The support pins for both printers is the same ande cover all board (components only on Top side of the PCB). I will check snap-off (right know setting 0.2-04. mm/s). I also suspected poor gasketing but clamps are o
Electronics Forum | Fri Mar 24 09:33:26 EST 2006 | Rob
Hi Samir, That's cos it's already an offence to sell such an item in the EU. If you even paint a childs toy with a coating of more than 0.2% lead you can face 2 years in prison (admittedly with 3 nice meals a day, internet access, gym etc - I think
Electronics Forum | Wed Jun 20 08:14:36 EDT 2007 | pavel_murtishev
Good afternoon, You should use overprint technique if you have any problems with paste volume (PIH technology and mixed designs, for instance). Otherwise, it is useless. Overprint has to be made in such way so that paste would have an ability to flo
Electronics Forum | Mon Jul 07 13:33:40 EDT 2008 | realchunks
Most QFP 128s have a 0.16mm wide lead. Might have to modify your pads if you'r buying some odd ball part. But generally 0.2mm should be OK for this part. You may never get good toe wetting. Most QFPs are cut apart after plating, thus the toes are
Electronics Forum | Tue Oct 02 10:30:10 EDT 2012 | eniac
Difference in pick height from paper and embossed reel (typically) is 0.2 mm. Try to change your pick height and place height (different type of capacitors have a different height: for 100 nF 0603 and for 4.7 uF 0603 it's a big difference!). Can you
