Electronics Forum | Fri May 15 12:01:34 EDT 1998 | Justin
| | We understand that testing for ionic contamination and surface insulation resistance measure different properties. We assemble printed circuit boards for other companies. We will not get combs on 90% of the boards that we assemble. | | We have
Electronics Forum | Wed Aug 08 21:24:52 EDT 2001 | davef
First, not that it�s bad, but SM-782, the land pattern standard is a pretty far distance from a DFM check list. Now, if you�d said D-275 er more properly 222X, ama be twitchin� less. Second, your process should include two distinct elements: 1 Data
Electronics Forum | Wed Aug 22 22:22:52 EDT 2001 | davef
First an administrative point, you can edit the postings that you make on SMTnet. Look for the yellowish-greenish EDIT button at the top of your posting. Second there are over 170 postings on intermetallic* on the fine SMTnet Production Forum Archi
Electronics Forum | Wed Oct 03 09:26:19 EDT 2001 | davef
Whether the customer is from a large or small corporation, military or commercial, the majority of our data comes in RS274X. In theory, ODB++ seems like a good idea. It may take some time for it to actually get into the mainstream where we are. It
Electronics Forum | Thu Oct 11 22:25:50 EDT 2001 | davef
Bruce I�m with yall. Designers and fabricators say �pins�. You say: * BGA pins are 1mm [0.039�] pitch. * BGA pads are 0.4mm [0.0157�] diameter. * BGA pins are 0.6 mm [0.024�] side-to-side. * Board thickness is ~0.4 mm [0.015�] First, as you can
Electronics Forum | Mon Oct 15 13:13:17 EDT 2001 | MikeF
Adding to Dave's comments, suppliers of selective soldering machines include Air Vac and Wenesco. I've used both, to solder and de-solder larger thru hole parts, such as connectors and large IC's. They are best suited to lower volume applications, an
Electronics Forum | Mon Oct 15 13:13:43 EDT 2001 | MikeF
Adding to Dave's comments, suppliers of selective soldering machines include Air Vac and Wenesco. I've used both, to solder and de-solder larger thru hole parts, such as connectors and large IC's. They are best suited to lower volume applications, an
Electronics Forum | Tue Dec 11 17:55:07 EST 2001 | davef
Ah, a desperate one. The kind we prey upon, mmm Several points are: * There are ample sources of information on the net that describe the fabrication of prototype boards. * Search the fine SMTnet archives for additional information. For instance:
Electronics Forum | Tue Dec 18 16:40:40 EST 2001 | davef
Mothball Ingredient Causes Cancer In Rats Naphthalene, the aromatic insecticide found in mothballs and public restroom deodorizers, causes cancer in rats, according to scientists at the U.S. National Toxicology Program (NTP). In the study, rats were
Electronics Forum | Thu Feb 14 20:24:07 EST 2002 | scott
My first reaction would be to run! FAST! Flex -- well, it... flexes... and isn't flat. While you assemble it, While you transport it, While it goes through the oven... SMT Connectors typically need to be held down during reflow. Fiducial types are
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