Electronics Forum | Fri Nov 12 11:07:08 EST 2004 | valuems
Hello Terry We have found that the best angle for metal blades is 37 to 45 degrees. Metal blades won't enter the stencil opening, rubber does. Metal blades are with out question the best way to print. If you go over 45 degress the blades will leav
Electronics Forum | Fri Dec 10 08:42:37 EST 2004 | mattkehoe
We had some bad experiences trying to work with soldermask defined BGA pads. If the opening in the soldermask is right to the edge of the copper/pad without a space it can leave reside on the pad and nothing will stick to it. See http://www.sipad.com
Electronics Forum | Sat Dec 18 00:00:26 EST 2004 | vinitverma
Hi Rob, I did'nt want to reply, but Base did, and rightly so about the dates. But that's not we're discussing at this moment. We started discussing about what's best for Serge. Now that he has decided for the NXT, good luck to him! But serge, in ca
Electronics Forum | Mon Jan 03 16:34:10 EST 2005 | davef
The main advantage if ENIG over HASL is that ENIG is flat and HASL generally is not. The main disadvanages to ENIG over HASL are: * Cost of ENIG is 1.5 - 2X higher than HASL * Selflife is less than HASL * You solder to nickel, rather than copper * E
Electronics Forum | Mon Jan 24 13:14:17 EST 2005 | cyber_wolf
Greg, One thing about this site is the fact that it is an open forum. This means that anyone can pretty much say anything. Keep that in mind if you are representing a company that produces equipment that does not work as advertised, you may get �un-
Electronics Forum | Fri Feb 18 22:32:27 EST 2005 | pd not cruel
I�m surprised how un professional the so-called experts can be. After all we all had our start sometime and if you can never remember asking a un qualified question in your entire career then you probably have a bad memory. This is an open forum for
Electronics Forum | Wed Feb 23 14:17:21 EST 2005 | scombs
We also have 4796's and 4791's and have had the same issues with 0402 parts.. All the suggestions listed in the last post will help quite a bit. We found our biggest problem was the board supports due to the operators using the wrong type of pins ,
Electronics Forum | Tue Feb 22 17:57:32 EST 2005 | Austinj
Most solder paste has a shelf life of 1 week at room temperature after opened, if resealed at the end of the shift/day. Most shelf lives are 4-6 months at 40F (refridgerated) or 1 month at room temp (unopened/sealed). Recommended stencil life is appr
Electronics Forum | Tue Mar 15 12:20:47 EST 2005 | Material Man
The use of nitrogen in lead free wave solder operations is primarily used to reduce or even eliminate drossing of the solder, thus improving solder yield. The higher priced lead free solder makeup (Cu, Ag) make this a more economical proces than the
Electronics Forum | Thu Apr 07 14:07:11 EDT 2005 | Tater
Both methods are fine, but you should create or use a spec that fits your process needs. You should also consider if this warp will directly impact the performance of your final product once it's completely built. Then make sure your customer won't
