Electronics Forum | Sun Dec 03 10:05:22 EST 2000 | Steven J
Greetings to all. We are currently experiencing cracking of the ceramic capacitors, on both primary and secondary sides of the PWB. The components range in size from 1206, 1210, to 1815s. The cracks do not appear to alter the electrical properties
Electronics Forum | Fri Aug 04 11:04:27 EDT 2000 | John
We manufacture a mixed technology board, that uses a through hole "mini cap" with a 2.5 mm lead span. We have had several failures caused by solder wicking up through the plated through hole pcb and touching the can. This shorts out the capacitor.
Electronics Forum | Sat Mar 31 08:47:24 EST 2001 | davef
Sure, researchers measure shear as an element of their material characterization process, but that does not make it an acceptance test. [Truly, this conversation is not uncommon on SMTnet. So, it would not surprise me if an enterprising something o
Electronics Forum | Tue Jul 31 18:49:20 EDT 2001 | arsmoriendi
i have a problem with some units that had one capacitor only soldered in one side, the geometry of the capacitor is 0805, our product during his life suffer a lot of stress (due temperature or vibration), some of those units are already with the cost
Electronics Forum | Tue Nov 30 15:38:27 EST 1999 | Wendy Casker
Hi, I am looking for land patterns for 0612 and 0508 chip capacitors. Because they are not standard (yet) package sizes, i am having trouble finding a standard land pattern. (If you don't know what these are, picture a 1206 or an 0805 with the te
Electronics Forum | Thu Jul 01 20:47:48 EDT 1999 | Scott McKee
I called a new customer today and told him that one of his parts on the proto boards (a capacitor with a polarity 'tit') was too long for the pads and the pads were small causing the end opposite of the "tit" to lift up. I suggested that the product
Electronics Forum | Thu Sep 03 12:42:50 EDT 1998 | Mike Cox
| I am in need of possible causes and solutions to capacitors that are failing in the field. | Are there issues in our process that need to be | checked? | Some people said the problems are due to improper | storage. Others say it is thermal stre
Electronics Forum | Fri Apr 17 22:07:53 EDT 1998 | D.Lange
| We are having some problems with "drawbridging" on 0805 film capacitors. | We have already reduced the pad width from .050" to .040" based on input | from vendor. Defects appear to be random as far as location on the PWB and direction | of placem
Electronics Forum | Sat Jan 03 18:13:58 EST 1998 | David Jacks
Tom: You are right. Pre-heating is just as necessary in rework as it is in intiial production. Zephyrtronics produces an economical convective bottom side pre-heater known as an airbath. This product ramps the substrate and assembly at 2-4 degrees
Electronics Forum | Sun Apr 21 09:34:03 EDT 2002 | hany_khoga
Dear all: We need to glue some chip capacitors (0603 & 0805) before continuing the process of placing the topside SMT components. As a subcontractor we received the whole materials including the glue. After experimenting several temperature profiles
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