Electronics Forum | Thu Nov 13 11:45:04 EST 2008 | pbarton
We have seen a similar problem. Turned out to be mechanical stress on the component caused by the method of location and clamping at ICT. Where is the component located on the assembly? Poorly adjusted clamping pillars on clamshell fixtures can cause
Electronics Forum | Tue Mar 05 11:08:31 EST 2019 | mrk
Hi all, We have an assembly which features non-plated tooling holes used to align the board in a bed of nails style test fixture. This assembly is rather small, and as such, the test points are pretty small as well. We have found that some variation
Electronics Forum | Mon Nov 17 14:14:15 EST 2003 | blnorman
The main function of the test is to evaluate the solder mask. Basically you are testing three samples: #1 - No solder mask, #2 - solder mask without solder, and #3 solder mask with solder. The solder pot is used to apply solder to the patterns on O
Electronics Forum | Mon Jul 23 12:26:10 EDT 2007 | jdumont
We run a small piece of FR4 with a "thickness test" pattern before production and measure it after with a digital micrometer. Then we save the coupon with the W/O # written on it.
Electronics Forum | Mon Jun 04 18:23:41 EDT 2007 | greggc09
Patrick Q1) Is the test pattern similar to the IPC-B-25? A1) - No - Tests were run on a prototype assembly. Q2) what is the temperature in the test chamber and voltage supplied to the test coupons? A2) 25C with 3.3VDC. Q3) Does this test i
Electronics Forum | Sun Oct 04 20:55:44 EDT 2009 | phomann
Hi, I have a test pcb that came with my Yamaha YM84S machine. The board contains land patterns, fiducials, etc. The pyrpose of the board is to test the placement and vision systems in the machine. Does anyone provide the technical drawing of the bo
Electronics Forum | Mon Jun 04 10:13:48 EDT 2007 | patrickbruneel
Chris, This is probably one of the reasons medical equipment and implants are exempt from the directive. Below a quote from an article published by the medical device network. RoHS excludes medical devices (category 8) and monitoring and control i
Electronics Forum | Thu Apr 08 13:24:36 EDT 1999 | ADRIANO FERNANDES
| | I am getting ready to purchase a spray fluxing system for a no-clean process. I have narrowed it down to the Nordson or Dover system. Does anyone have any experience with either. If so can you relate with me. I am a little leary of the Nordso
Electronics Forum | Wed Apr 07 13:10:36 EDT 1999 | Chrys Shea
| I am getting ready to purchase a spray fluxing system for a no-clean process. I have narrowed it down to the Nordson or Dover system. Does anyone have any experience with either. If so can you relate with me. I am a little leary of the Nordson
Electronics Forum | Mon Oct 21 22:15:36 EDT 2002 | davef
First, SIR data is heavily dependant on the test pattern selected. Be very careful when comparing the results of resistance readings taken from different geometric patterns. Second, if yer talkin': * Bare boards, yupper. * Finished assemblies impor
