Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Parts Where to get, and how to make the best bits. PCB's, caps, transformers, etc.

Value of SMD capacitor
Value of SMD capacitor
Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 9th February 2009, 04:39 AM   #1
Perry Babin is offline Perry Babin  United States
diyAudio Member
 
Join Date: Nov 2003
Location: Louisiana
Default Value of SMD capacitor

Can anyone tell me where I can find the code to determine the value of this capacitor. It's an 0805 size. Thanks in advance.



Click the image to open in full size.
  Reply With Quote
Old 9th February 2009, 04:49 AM   #2
infinia is offline infinia  United States
diyAudio Member
 
infinia's Avatar
 
Join Date: May 2005
Location: SoCal
Hi
It's markings youre looking for is most probably on the bottom side. Look for other similar caps on the board to get a better clue on these. I guess no schematics are avalible?
BTW impressive photo shot! How did you do that?

looked it up myself
edit>http://www.dpreview.com/reviews/canons3is/page2.asp
&cropped macro shot
__________________
.
.
  Reply With Quote
Old 9th February 2009, 05:00 AM   #3
Perry Babin is offline Perry Babin  United States
diyAudio Member
 
Join Date: Nov 2003
Location: Louisiana
Correct, no schematic available. The marking on the other side is the same.

The photo is not as good as it could be. The camera/lens can do better. It was taken with a canon S3 and a Raynox MSN-202 accessory lens on a LensMate adapter. This is a better example of what the lens can do. This is the stylus on an Audio Technica SLT88E cartridge.

Click the image to open in full size.
  Reply With Quote
Old 9th February 2009, 05:15 AM   #4
infinia is offline infinia  United States
diyAudio Member
 
infinia's Avatar
 
Join Date: May 2005
Location: SoCal
Why do want to know... is it bad?
If it has same marking both sides..My guess would be 1pF ?K normally means 10% tol

http://my.execpc.com/~endlr/markings.html


Can you trace it out to a sub circuit.
Since you like to take pictures perhaps a wider shot with some background circuit/fuction info.
__________________
.
.
  Reply With Quote
Old 9th February 2009, 05:25 AM   #5
Perry Babin is offline Perry Babin  United States
diyAudio Member
 
Join Date: Nov 2003
Location: Louisiana
It's shorted. It's a miller capacitor in an amplifier. I've seen values stated for it from 20pf to 100pf. Anything in that range would probably work. The one in the board measures 15pf. They both got hot so I'm not sure they're going to read the correct value. If I can find a chart, I'll know definitively the correct value.

Thanks for the help.
  Reply With Quote
Old 9th February 2009, 05:36 AM   #6
infinia is offline infinia  United States
diyAudio Member
 
infinia's Avatar
 
Join Date: May 2005
Location: SoCal
Might be Table 11 in the link I gave you above. I've never seen it those before.
K=22
color=red
__________________
.
.
  Reply With Quote
Old 10th February 2009, 06:23 AM   #7
Perry Babin is offline Perry Babin  United States
diyAudio Member
 
Join Date: Nov 2003
Location: Louisiana
The information you provided helped me to find the following document. On page 5 it shows the marking code and logo.

http://www.kemet.com/kemet/web/homep...02_CeChPkg.pdf

Thanks again.
  Reply With Quote
Old 10th February 2009, 07:21 AM   #8
infinia is offline infinia  United States
diyAudio Member
 
infinia's Avatar
 
Join Date: May 2005
Location: SoCal
Default In Conclusion

"Laser marking is available as an extra-cost option for
most KEMET ceramic chips. Such marking is two
sided, and includes a K to identify KEMET, followed by
two characters (per EIA-198 ....)"


"K" to identify KEMET
"A"=1 significant digit
"1"=10 multiplier

so it's a Kemet 10pF

altho we still dont know dielectric (temp limit), tolerance, or voltage.
Thanks I learned something too. A bit esoteric tho.
__________________
.
.
  Reply With Quote

Reply


Value of SMD capacitorHide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Best PS capacitor RFENG Parts 3 19th January 2008 03:44 PM
what capacitor is this? abiedoodles Parts 10 12th December 2007 08:11 PM
Capacitor Help MorePower7701 Solid State 8 25th July 2007 07:41 PM
Capacitor esl dhole Pass Labs 1 23rd April 2005 03:18 PM
Capacitor or not? future Parts 2 25th June 2003 12:10 AM


New To Site? Need Help?

All times are GMT. The time now is 05:38 AM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 16.67%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio
Wiki