Electronics Forum | Wed Apr 16 01:40:17 EDT 2003 | praveen
Hi , We are using water wash solder paste to solder the SMT LED's manufactured by Chicago Miniature lamp (CMD93-21 & 22)and Kingbright. Achieving the solder fillet , wetting has no issue but we observe high fallout at the functional testing. If we do
Electronics Forum | Wed Oct 14 03:21:37 EDT 2009 | lincy
We found a PCBA performance have insertion loss at the functional test process. We did some analysis and conclude the main root cause is from the PCB performance. What is the critical parameter in PCB will cause a failure in PCBA frequency performan
Electronics Forum | Thu Jul 27 16:54:46 EDT 2006 | pjc
In-Circuit test, or ICT, is the most common method of electrical test for an assembled PCB. It is the most comprehensive and accurate method to ensure that both the PWB and components are working to specification. Not all components however can be el
Electronics Forum | Fri Jul 20 17:38:06 EDT 2018 | mikedcmt
We have some MLCC capacitors that show some discoloration, or spots. Does anyone know if this will affect reliability? Caps test good - and assemblies function perfectly.
Electronics Forum | Mon Jul 30 12:45:00 EDT 2018 | mdkmdr
Trying to get a sense of the push-pull going on between designers and manufacturers on the subject of 'one test point per net'. Getting a feeling like the new paradigm is doing all of the electrical tests as functional at EOL and relying almost comp
Electronics Forum | Tue Jul 31 04:45:42 EDT 2018 | robl
Depends on what sort of outfit you are working for, and what you are building. A lot of CEMs are doing Flying Probe or ICT on the boards ahead of investing time building into units or adding parts that prevent access to rework. We have a combination
Electronics Forum | Mon May 10 12:15:46 EDT 1999 | Boca
We have been having an ongoing problems with radial electrolytic capacitors (thru hole)for some time. 1. When we wash them in our inline cleaners the sleeving shrinks up from the PCB leaving the 'can' exposed. Some designs have traces on the surf
Electronics Forum | Fri Dec 01 07:28:37 EST 2000 | JM Lasserre
I just started an analysis concerning broken capacitors (0603 ceramic). My first question concern the standard used to determine the maximum force a capacitor 0603 can support on a pcb. Some capacitors suppliers use the die sheer test of MIL-STD-883
Electronics Forum | Tue Jan 29 20:33:52 EST 2019 | deanm
First, you cannot measure capacitors once they are soldered onto the board. Second, why must you measure? Verify your machine set up by using intelligent feeders (if your machine has them) or a checklist, preferably by two people. If you cannot trus
Electronics Forum | Mon May 10 13:35:14 EDT 1999 | Chrys Shea
| We have been having an ongoing problems with radial electrolytic capacitors (thru hole)for some time. | 1. When we wash them in our inline cleaners the sleeving shrinks up from the PCB leaving the 'can' exposed. Some designs have traces on the
