Electronics Forum | Mon Apr 23 07:19:23 EDT 2001 | dahsr
Can I have solder bridging two SM rectangular chip components due to misalignment? The bridging occurs at one end and is on a common trace between the two pads. The components are larger than the pad (side overhang) and are aligned rather perfectly w
Electronics Forum | Tue Apr 13 23:27:34 EDT 1999 | Mike Flori
I need to cure conformal coat on a 19" x 15" board. The material needs 7 - 10 minutes at 100deg C, but I have limited floorspace so I'm looking for an oven with about 36 inches heated length and 18 or more inch wide belt. The material we are consider
Electronics Forum | Wed Apr 14 17:13:08 EDT 1999 | Stephen Oltmann
| I need to cure conformal coat on a 19" x 15" board. The material needs 7 - 10 minutes at 100deg C, but I have limited floorspace so I'm looking for an oven with about 36 inches heated length and 18 or more inch wide belt. The material we are consid
Electronics Forum | Wed Apr 14 17:14:49 EDT 1999 | Stephen Oltmann
Check with BTU. They have dryers in the length you need. Good luck! | | I need to cure conformal coat on a 19" x 15" board. The material needs 7 - 10 minutes at 100deg C, but I have limited floorspace so I'm looking for an oven with about 36 inches
Electronics Forum | Wed Jun 10 17:30:44 EDT 1998 | FAC
When creating part data�s for BGA or QFP style components, the line scan camera will be utilized (Camera No. 4). Using a Single nozzle type placing head, a nozzle capable of sufficient vacuum, and front lighting the part can achieve placement of a 74
Electronics Forum | Sat Feb 02 09:48:27 EST 2002 | davef
We've talked about assembling on flex previously. Search the fine SMTnet Archives for background. Issues that come to mind [which is very risky, given that this Saturday morning and last night was at Jimbo's] are: * Use carriers that can flow thoug
Electronics Forum | Tue May 21 08:26:14 EDT 2002 | stefwitt
without knowing your machine, I guess the axis does not find the zero pulse. You may have to re-place the incremental or linear encoder for the X-axis. Some vendors use proximity switches for a zero pulse which could be defective. If the axis stops i
Electronics Forum | Mon Feb 03 05:02:49 EST 2003 | Eugene
Hi all. One of our customers recently asked us during an audit of our PCBA rework line if we have a limit for the total number of reworks/repairs that can be done on one PCBA. We specify 3x maximum on one location of a major part (LSI for example). B
Electronics Forum | Wed Feb 02 21:56:11 EST 2005 | davef
Based on X-ray imaging, IPC-7095 standard specifies three categories for void size for BGA solder joints. These categories are based on the percentage of joint cross sectional area occupied by the voided area. Class III Small: Void area is LT 9% Cla
Electronics Forum | Sun Jun 19 05:35:34 EDT 2005 | olas
Hi Rob, I've been using Quadras for many years and I find them very useful for prototyping and small batch productions. The software is very easy to use and you may import many CAD formats by an off-line software. The laser centering system is able t
