Electronics Forum: capacitor and location (Page 1 of 24)

capacitor leakage

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

resistor and capacitor naming codes for smt.

Electronics Forum | Sun Sep 27 10:42:35 EDT 1998 | l atch

I'm looking for a chart that will help me identify smt resistors and capacitors. I have figured out a few on my own. a resistor with the numbers 510 printed on it was a 51 ohm resistor. numbers 221 was a 220 ohm resistor. numbers 102 was a 1k resis

Aluminium capacitor rotation after soldering

Electronics Forum | Wed Apr 22 08:40:18 EDT 2015 | markhoch

Hi Myriam, I think we may need some more information. Is the Electrolytic (Aluminum) Capacitor placed more than once per board? If so, are all locations twisting? This would typically be caused by a thermal imbalance that could be design induced. (u

Same pattern of capacitor crack

Electronics Forum | Thu Nov 13 11:45:04 EST 2008 | pbarton

We have seen a similar problem. Turned out to be mechanical stress on the component caused by the method of location and clamping at ICT. Where is the component located on the assembly? Poorly adjusted clamping pillars on clamshell fixtures can cause

Re: resistor and capacitor naming codes for smt.

Electronics Forum | Mon Sep 28 09:18:30 EDT 1998 | Ben Wilmot

The majority of SMT resistors use the following notation. 10 X eg 153 represents 1k5 resistor The third digit in the sequence denotes the number of zeros to add after the first two digits giving the value in ohms. Many Caps will follow the same nota

Re: Solder Fillet Problem on 0603 chip capacitor

Electronics Forum | Tue Oct 17 18:36:49 EDT 2000 | Philip Reyes

Yeo, These are possible rootcause of that defect and you can evaluate. 1. Orientation of the capacitor, maybe the cap is located behind big component. 2. Reflow profile, check the profile on that side. 3. Yes, check also the mounting force. Philip

Cracking Capacitors and Solder Balls

Electronics Forum | Mon Jun 08 14:19:30 EDT 1998 | Gary Simbulan

Earl, et al, Boy things get old and cold around here fast. I promised more detail on my capactior problem and I thought I could drop something completely different in the same message and tell a tale of solder balls. First the caps. We still have

0201 Land Pattern and Aperture Shape Design

Electronics Forum | Thu Mar 10 09:13:15 EST 2005 | davef

From http://www.IPC.org ... IPC-7351 - Generic Requirements for Surface Mount Land Pattern and Design Standard The successor to the IPC-SM-782A is here! The document covers land pattern design for all types of passive and active components, includ

Re: Cracking Capacitors and Solder Balls

Electronics Forum | Tue Jun 16 15:01:58 EDT 1998 | Gary Simbulan

There are some common reason for capacitor cracking on my web page if you want to have a look. The document can be downloaded for your reference. | Earl, et al, | Boy things get old and cold around here fast. I promised more detail on my capactior

Re: Cracking Capacitors and Solder Balls

Electronics Forum | Tue Jun 16 15:00:12 EDT 1998 | Gary Simbulan

There are some common reason for capacitor cracking on my web page if you want to have a look. The document can be downloaded for your reference. | Earl, et al, | Boy things get old and cold around here fast. I promised more detail on my capactior

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