Electronics Forum | Mon Mar 12 09:25:16 EDT 2007 | rgraves
Our internal designers are employing SMT connectors that utilize a �PCB positioning boss� in conjunction with normal gull wing leads. The use of these devices is based on the advertised ability of the boss to prevent �mis-insertions� and assist in �
Electronics Forum | Sat Apr 21 20:40:23 EDT 2007 | mika
Thanks Darby, I got the point of what you are saying. Never the less, I still don't like when a pcb manufactor change the leads/threads on the pcb whitout mention this to us. In such a critical case! There should always be a close relationship betwee
Electronics Forum | Thu Apr 19 23:53:32 EDT 2007 | Haris
NOTE: VIOS format takes less memory than XML format. VIOS to XML on YV100Xg Click EDITOR button. VIOS data appears, click your desired file name then click PCB DATA in the menu and click SAVE PCB DATA OF XML AS, give name with the extension .xml MY
Electronics Forum | Tue Jun 05 12:12:19 EDT 2007 | SWAG
We do not recommend array sizes. PCB houses take a single board and turn it into a step/repeat that is best fit for their process = cheaper boards I suppose. We then approve this array and build programs and tooling to match. On occasion, we recei
Electronics Forum | Thu Jul 12 10:15:12 EDT 2007 | swag
I've got a proto build (3 boards) that has a Xilinx FG456 fine-pitch BGA on it. Every BGA pad on the PCB has an unmasked via attached. Between the via and the pad is a thin soldermask strip, maybe .005" wide at best. I am very confident it will br
Electronics Forum | Fri Jul 13 08:54:18 EDT 2007 | rgduval
Has your board house reviewed the PCB layer stack? Make sure that the layers are balanced in copper weight, etc? Have you tried pre-baking the boards? We just had an issue with some boards warping that have never warped before for us. It happened
Electronics Forum | Mon Aug 06 14:05:02 EDT 2007 | slthomas
BEC hardware would be on the machine as a sensor underneath the placement table, to the left of the C&C, and an emitter attached to a bracket to the left of the insert head. The two line up with each other and the sensor uses a quadrant layout to det
Electronics Forum | Wed Aug 08 17:50:22 EDT 2007 | flipit
X7R >Z5U,Y5V Greater means less likely to crack or in other words NP0 is better than X7R for crack resistance. Don't think that there is a set formula. There isn't! I cracked ceramic resonators at 0.050" from the board edge with CAB M2 and M3 dep
Electronics Forum | Tue Sep 18 07:52:29 EDT 2007 | davef
Does the change from supplier to supplier as a result of: * Board definition? * Differences in processing at fabs? 3 Specification Fir Tree General Technical Specification 3a Design/Layout: * IPC-2221 * IPC-2222 3b PCB Fab: * IPC-6011 * IPC-6012 * I
Electronics Forum | Fri Sep 21 13:04:58 EDT 2007 | jmelson
Hello, Is anyone using an SMT pick&place machine to insert single contacts into PC boards? I have some boards that have 32 female contacts for 1mm pins, and 16 contacts for 0.5mm pins. I have been using Mill-Max for these contacts, getting the sma
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