Electronics Forum | Fri Mar 26 11:31:34 EDT 2010 | rway
I have been using ICT for a number of years. It is still a viable resource for catching defects in the production process. AOI doesn't catch everything, such as bridging on QFN or J-lead devices (this will depend on the type of AOI and camera syste
Electronics Forum | Tue Aug 31 21:45:49 EDT 2004 | KEN
I have experienced this directly in SMT and wave solder. Fillet lift (can) be a direct indicator to lead enrichment (but its not the exclusive symptom). Lead enrichment in smt joints reduces the interfacial strength shortening the time to creep f
Electronics Forum | Mon Mar 29 12:10:14 EDT 2010 | rway
Test Jet will work for catching lifted leads, certainly. X-ray is the only thing for testing for internal solder defects such as voids and cracks. I personally do not have any experience using X-ray, so I cannot advise on its reliability. Perhaps
Electronics Forum | Thu Mar 25 12:24:12 EDT 2010 | ssager
When testing components on a PCBA, try to validate coverage for presence, correct, orientation, live, and alignment. AOI is not really great at catching cold solder joints and damaged components, and from my experience an X-Ray is only as good as the
Electronics Forum | Fri Nov 18 12:35:15 EST 2011 | rway
As the article eludes to, you still need probe access to measure the pins with TestJet. One thing I wanted to add was the use of JTAG for use with Boundary Scan. Certain devices have JTAG capability, but not all JTAG devices are Boundary Scan compa
Electronics Forum | Tue Nov 01 14:46:31 EDT 2011 | davef
Agilent TestJet Technology White Paper In the early 1990s, the testing of digital parts became problematical. Previous in-circuit test techniques sought to ensure a correct, functioning part by applying digital patterns, called vectors, to the input
Electronics Forum | Fri Feb 13 16:13:20 EST 2009 | jax
Many shops require levels for typical component packages on FR-4 or a like substrate to be 2, 9, 15, 1 and 10 mg/in2 for fluoride, chloride, bromide, nitrate, and sulfate respectively. These levels can change for Medical or Automotive.
Electronics Forum | Tue Mar 23 07:35:42 EDT 2010 | jooh
Since I'm new to the forum I probably ask previously answered questions (that I have not found) but I would be grateful if someone could clarify this for me. I'm in R&D at a company where we design low volume (1k-10k) fairly complex PCBAs for our pr
Electronics Forum | Sat Feb 05 09:08:18 EST 2000 | Dave F
Casimir: Let me expand on something that I said in my response to your thread on ionic testing. Generally, no-clean people don�t use ROSE testing as part of their process control, because the ROSE test is essentially washing your board in DI/IPA �
Electronics Forum | Mon May 14 09:35:21 EDT 2018 | directx995
Hello everyone, A few days ago I design one special kind of PCB for testing accuracy of our Pick and Place machines. (for trimming, calibrating, NPI etc.) I am looking for adhesive spray, to apply it on PCB (at the moment I'm using double sided tape
