Electronics Forum | Wed Jul 10 18:19:42 EDT 2002 | davef
Flex cracking under the terminations is generally regarded as one of the primary causes of failure of ceramic chips. If you can see cracks in the solder joints from board flex, those chips are certainly strongly suspect, and you must assume there is
Electronics Forum | Fri Jan 10 14:11:27 EST 2003 | genny
It's always safer to use a higher voltage cap than a lower voltage cap. It isn't a fuse... There is only one case where we dropped the voltage on a cap. We were using a tantalum cap that was rated to 16V, but had been built in the standard packagi
Electronics Forum | Fri Jan 10 10:09:42 EST 2003 | mantis
Hi In selecting or substituting a capacitor for use, consideration must be given to (1) the value of capacitance desired and (2) the amount of voltage to be applied across the capacitor. If the voltage applied across the capacitor is t
Electronics Forum | Wed Jan 17 03:52:20 EST 2007 | Vladimir
Hi, I am process engineer of SMT production. We have some strange problemn with tantalum capacitors. 1 case: If tantalum capacitor placed near BGA and one of his legs is connected to one of the BGA balls, after reflow we can see short between two or
Electronics Forum | Wed Jan 17 05:32:21 EST 2007 | vovika
Maybe, but distance between Tantalum capacitor and BGA is about 1cm. Also how evaporation can affect on the BGA balls and can be cause of short?
Electronics Forum | Fri Mar 21 10:28:27 EST 2003 | mantis
Sorry i didnt explain it vey well,the parts that are misaligned are always sitting next to these particular tanatlum capacitors.It affects 0805 parts and A tsop36 and can even cause a short on a bga right in the corner where the tant sits.If you chan
Electronics Forum | Wed Aug 20 08:23:36 EDT 2008 | davef
Your tantalum capacitor supplier offers the best advice. We're not sure of the package that you plan to use. * If you are referring to molded package, surface mount, tantalum caps, yes, they can be wave soldered. Smaller case size chips (eg, Kemet A
Electronics Forum | Mon Aug 25 12:04:42 EDT 2003 | John Inglis
We are currently seeing short circuits on both 100nF and 1uF capacitors from TDK circa 2001. There are known design limitations to the PCB resulting in mechanical stress, howevre this PCB has been built for several years and this is a new phenomenon.
Electronics Forum | Thu Aug 24 12:45:16 EDT 2006 | CKH
Hi Folk, recently, i have found about 5% of the PCBA failed because of the faulty 10uF Cermanic Chip - Short Circuit. Will this Ceramic Chip cause during the SMT Process (e.g Temperature), Functional Testing or from it Original incoming Capacitor (M
Electronics Forum | Thu Aug 24 17:29:02 EDT 2006 | GS
Also, Make sure the Caps are suitable for Reflow temperature. It may be they are suitable only for wave solder temperature (ie. Murata capacitors can be: GR..... only for Wave Solder GRM...... can withstand Higher Reflow temp...) Several years ag
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