Badcaps.net Forum
Go Back   Badcaps Forums > General Topics > General Capacitor Questions & Issues
Register FAQ Calendar Search Today's Posts Mark Forums Read

 
Thread Tools Display Modes
Old 01-03-2020, 10:16 AM   #1
cosmarchy
New Member
 
Join Date: Jan 2020
City & State: Norfolk
My Country: United Kingdom
I'm a: Knowledge Seeker
Posts: 3
Default ESR Data

Hi,
I'm trying to diagnose a fault with a power supply which surprisingly has very little in the way of electrolytic capacitors onboard.

I'm looking for the ESR data on these capacitors but cannot find anything at all.

There are:
1x Elite 180uF 450v - cannot read type
1x Elite 470uF 35v - EJ(M) (C)0604 PET
2x Elite 470uF 35v - EJ(M) (C)0551 PET
2x Jamicon 47uF 50v TK Series

I cannot find the Elite manufacturers website and cannot find any datasheets on the three 470uF capacitors; despite them being the same rating, they are differently marked!!

What I can find on the Jamicon website for the TK series does not indicate the ESR.

What is the correct thing to to in this situation? Are there any comprehensive typical ESR tables which I should use (I've had a quick preliminary look on Google but they do not list the capacitance / voltage combinations).
Also, if typical tables can / should be used, why use manufacturers tables if they are available?

I have done a quick test of the capacitor ESR's and have some interesting results however they are still in circuit and I'm not sure of the values I should be expecting so am looking for accurate data before I unsolder and test again.

Thanks
cosmarchy is offline   Reply With Quote
Old 01-03-2020, 11:34 AM   #2
diif
Badcaps Veteran
 
Join Date: Feb 2014
City & State: Midlands
My Country: England
I'm a: Professional Tech
Posts: 4,663
Default Re: ESR Data

The datasheets.
Attached Files
File Type: pdf TK Series ICD.pdf (81.5 KB, 12 views)
File Type: pdf Elite [radial thru-hole] EJ Series.pdf (149.2 KB, 10 views)
diif is offline   Reply With Quote
Old 01-03-2020, 01:52 PM   #3
PeteS in CA
Badcaps Veteran
 
PeteS in CA's Avatar
 
Join Date: Aug 2005
City & State: San Jose, CA
My Country: USA, Unsure of Planet
Line Voltage: 120VAC, 60Hz & 115VAC, 400Hz
I'm a: Professional Tech
Posts: 2,911
Default Re: ESR Data

Quote:
Elite 470uF 35v - EJ(M) (C)0604 PET
(M) - this is not part of the series name. it simply means that the tolerance for the part is +/-20%.

(C) - I'm going to guess that this might be the copyright symbol; or maybe the location of the factory.

0604 - this means the part was manufactured in the 4th week of 2006.

PET - this means the sleeve material is polyethylene terephthalate, aka polyester or Mylar.

If you posted more info about the power supply we might be even more helpful.
__________________
PeteS in CA

Power Supplies should be boring: No loud noises, no bright flashes, and no bad smells.

Where might is right
There is no right.
- Sophocles in "Antigone"
****************************
All that is gold does not glitter,
Not all those who wander are lost;
- J.R.R. Tolkien, The Fellowship of the Ring
****************************
To kill personal responsibility, initiative or success, punish it by taxing it. To encourage irresponsibility, improvidence, dependence and failure, reward it by subsidizing it.

Last edited by PeteS in CA; 01-03-2020 at 01:54 PM..
PeteS in CA is offline   Reply With Quote
Reply

Thread Tools
Display Modes

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



Badcaps.net Technical Forums 2003 - 2020
Powered by vBulletin ®
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.
All times are GMT -6. The time now is 01:34 AM.
Did you find this forum helpful?