Decipher part of this please: 4.7U_0805_25V6K

cook · 10-14-2021, 01:44 PM

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

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

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

In case it helps, the motherboard is a Compal LA-7781P - Dell Latitude E6430

**R_J** · 10-15-2021, 05:04 PM

cook · 10-16-2021, 07:24 AM

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

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

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?

10-14-2021, 01:44 PM	#1
cook Quiet observer Join Date: May 2010 City & State: Central Florida My Country: USA I'm a: Hobbyist Tech Posts: 88	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

10-14-2021, 02:59 PM	#2
s675 Member Join Date: Sep 2015 City & State: Essex My Country: UK Line Voltage: 240VAC 50Hz I'm a: Knowledge Seeker Posts: 28	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)

10-15-2021, 11:13 AM	#3
PeteS in CA Badcaps Veteran 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: 3,369	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"). __________________ PeteS in CA Power Supplies should be boring: No loud noises, no bright flashes, and no bad smells. ************************** 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. ************************** Laughable prediction, https://principia-scientific.com/doc...l-most-people/ ; Fully Vaxxed May 2021; Viva CallSJ "5K" (actually 3.26 miles), 9/19/21, 51:19; ZombieRunner Halloween 10K, 10/31/21, 1:49:30; ZombieRunner Quarry Lakes half marathon, 4:19:07, 12/12/21

10-15-2021, 04:45 PM	#4
cook Quiet observer Join Date: May 2010 City & State: Central Florida My Country: USA I'm a: Hobbyist Tech Posts: 88	Re: Decipher part of this please: 4.7U_0805_25V6K In case it helps, the motherboard is a Compal LA-7781P - Dell Latitude E6430

10-15-2021, 05:04 PM	#5
R_J Badcaps Veteran Join Date: Jun 2012 City & State: ☻ My Country: Canada I'm a: Professional Tech Posts: 7,990	Re: Decipher part of this please: 4.7U_0805_25V6K . Last edited by R_J; 10-15-2021 at 05:10 PM..

10-16-2021, 07:24 AM	#6
cook Quiet observer Join Date: May 2010 City & State: Central Florida My Country: USA I'm a: Hobbyist Tech Posts: 88	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!

10-16-2021, 02:46 PM	#7
diif Badcaps Veteran Join Date: Feb 2014 City & State: Midlands My Country: England I'm a: Professional Tech Posts: 6,006	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.

10-16-2021, 07:41 PM	#8
cook Quiet observer Join Date: May 2010 City & State: Central Florida My Country: USA I'm a: Hobbyist Tech Posts: 88	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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