Electronics Forum: caps (Page 1 of 120)

0201 caps

Electronics Forum | Mon Dec 02 16:25:06 EST 2002 | jimlew

In doing process qualifications for 0201 caps, has anyone taken cross-sections and discovered cracks / hairline fractures / voids between the metalization on the end and the ceramic itself? (not cracks in the solder joint) We are well within the cap

0201 caps

Electronics Forum | Wed Dec 04 15:05:08 EST 2002 | dougt

How about building a panel and checking it out prior to sawing it up?

0201 caps

Electronics Forum | Mon Dec 02 21:32:34 EST 2002 | davef

Sounds like you're killing the poor little critters. Tell us about: * Placement force. * Reflow method. * Where and how you are measuring your reflow recipe. * Cooling rate of the reflow recipe. * How the solder connection to the metalization appear

0201 caps

Electronics Forum | Wed Dec 04 21:39:53 EST 2002 | davef

As you say, some BIG time force has pulled the metalization from the bottom of the component termination. From the pix it's hard to say whether it was caused by either: * Mechanical flexure of the board during an unusual heating or other processing

0201 caps

Electronics Forum | Tue Dec 03 10:21:11 EST 2002 | jimlew

I don't think I can post pics in this (if anyone knows otherwise let me know), so I will email them to anyone who's curious. Here's the answers to your questions: Placement Force: 0201s are placed on the Siemens S23s with 1 newton of force. The s

0201 caps

Electronics Forum | Tue Dec 03 20:54:57 EST 2002 | davef

Q1:A picture of the sectioned MLCC would be nice. A1: I don't think I can post pics in this (if anyone knows otherwise let me know), so I will email them to anyone who's curious. R1: You�re correct. You cannot post pix on SMTnet. Please email me t

Tantalum caps “popcorn”

Electronics Forum | Thu Apr 25 01:20:58 EDT 2019 | smith88

I am having fractures in my tantalum caps, I believe it is from out fading but I am having a hard time convincing others. Where they are not hermatically sealed are thes fractures a concern? Moisture is entering the body regardless of the fractures?

caps moving from pads

Electronics Forum | Wed Sep 21 10:30:28 EDT 2005 | James

It could be outgassing, are there any electrolitic caps or anything else nearby that may contain air or moisture? You could try baking the parts before use.

PPS caps degrading value

Electronics Forum | Mon Jul 09 10:33:53 EDT 2007 | davef

PPS caps absolutely do not like washing. It would appear the structure/chemistry of these things makes them sponges. We don't know if that leads specifically to delamination.

Tantalum caps “popcorn”

Electronics Forum | Thu Apr 25 01:22:29 EDT 2019 | smith88

Out gassing not out fading

  1 2 3 4 5 6 7 8 9 10 Next

caps searches for Companies, Equipment, Machines, Suppliers & Information