Electronics Forum | Fri May 29 15:03:46 EDT 2009 | rway
We have recently begun using X5R dielectric capacitors. Although they have a better temperature coefficient over Y5V, they age much faster (5-7% logarithmically per decade). I assume the reason for using the X5R was the availability of the capacita
Electronics Forum | Tue Apr 18 17:34:55 EDT 2000 | Chris
Can someone explain what ageing means in terms of chip caps. Capacitor vendors state 7% per decade hour or 2-5-1 per decade hour. What does this mean? I think capacitor values lower over time but what is a decade hour. Thanks, Chris
Electronics Forum | Thu Jan 25 13:57:48 EST 2001 | davef
Interesting. I'd start with the "Help Desk" at the Reliability Analysis Center [http://rac.iitri.org/]. Please get back with your findings.
Electronics Forum | Thu Apr 12 20:27:10 EDT 2001 | davef
Tantalum caps degrade over time. You should not be seeing "chipped-off & cracks" regardless of the age. This should not be a shelf-life issue, unless you are storing them in an aquarium. Tell us the story. Solderability is a shelf-life issue and
Electronics Forum | Mon Jul 02 20:11:28 EDT 2001 | davef
It's possible that N2 vogued at the dawn of the NC age. Once practitioners jiggered their profiles and more importantly, paste suppliers developed a decent product; the demand for inerts declined. Day-off sound like a fair trade.
Electronics Forum | Fri Oct 29 22:46:34 EDT 1999 | Jeff Ferry
What is new in the age of the Internet? Once new meant 3 or 4 weeks, now it means 3 or 4 days, if not 3 or 4 hours. Jeff Ferry
Electronics Forum | Wed Aug 04 09:32:40 EDT 1999 | K
I know it seems an age away but does anyone have the dates for Intertronics next year ? or failing that does anyone know the URL of a page with all the show dates on If they do it would be a great help Thanx
Electronics Forum | Mon May 18 13:09:55 EDT 1998 | Edward P. Woldendorp, TwenTech
Wanted: by customer in the Netherlands: + used Zevatech PM575 SMD machine or comparable make and type having .4mm pitch and Vision. Capicity: 4,000 comp/hour will do. If available please give full configuration, age, location, asking price. Thank you
Electronics Forum | Wed Oct 21 15:07:50 EDT 1998 | Jim Gleason
Fyi, I just came across this the other day and you should look GSC, info@gogsc.com. They have been around for ages and do a great job for Lucnet.
Electronics Forum | Wed Dec 19 07:45:01 EST 2001 | nicholt
We are using a age old warpage spec of .010 inch per inch max warpage spec. Is there a recommended warpage spec for surface mount boards?
