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-   -   Decipher part of this please: 4.7U_0805_25V6K (https://www.badcaps.net/forum/showthread.php?t=99894)

cook 10-14-2021 01:44 PM

Decipher part of this please: 4.7U_0805_25V6K
 
From a Dell laptop schematic, they list this SMD capacitor: 4.7U_0805_25V6K

I understand it all except the 6K at the end. What does that mean?

4.7U is capacitance
0805 is size of SMD capacitor
25V is 25 volts.
6K ???

Thanks

s675 10-14-2021 02:59 PM

Re: Decipher part of this please: 4.7U_0805_25V6K
 
My ideas so far for the meaning of 6K:
  • Withstand voltage (6kV)
  • "Kemet code" (seen in some documents from Kemet)
  • 6 being unknown and K being 10% tolerance
  • Date code accidentally included
  • Reel quantity accidentally included (probably not, most are 5k, 10k etc)

PeteS in CA 10-15-2021 11:13 AM

Re: Decipher part of this please: 4.7U_0805_25V6K
 
There's no way a 0805 has terminals spaced far enough apart to handle 6KV without arcing. The "K" could be 10% tolerance. Or maybe "6K" could designate the tempco (though the terminology would be something like "X7R" or "Y5V" or "Z5U").

cook 10-15-2021 04:45 PM

Re: Decipher part of this please: 4.7U_0805_25V6K
 
In case it helps, the motherboard is a Compal LA-7781P - Dell Latitude E6430

R_J 10-15-2021 05:04 PM

Re: Decipher part of this please: 4.7U_0805_25V6K
 
.

cook 10-16-2021 07:24 AM

Re: Decipher part of this please: 4.7U_0805_25V6K
 
Doing more searches on my question, I was able to finally find something that may make sense on this. A German site had my same question on it and they speculated that the 6K represented the minimum purchase quantity for the item. But I will continue to search on this and post any relevant findings.

One other thing.... In the schematic for this board, they have many capacitors with this label... 4.7U_0805_25V6K~D I thought the 'K~D' was very interesting to note!

diif 10-16-2021 02:46 PM

Re: Decipher part of this please: 4.7U_0805_25V6K
 
I've seen some identified as 7U_0805_25V6-K and have also seen the 6 replaced with a 7.

I'm with PeteS , K is tolerance and the 6 is the tempco.

It's not ordering quantity.

cook 10-16-2021 07:41 PM

Re: Decipher part of this please: 4.7U_0805_25V6K
 
A found a few charts listing the codes for temperature coefficient (tempco) for capacitors, but I'm not sure I understood what 6 actually stands for. It seemed that some of the coding standards had different meanings for a 6. Would someone have a link to an article or chart that would describe what 6 means in this situation?


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