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Projects => General Questions => Topic started by: blearyeyes on November 20, 2023, 12:06:16 AM

Title: Source for Low Profile / Low ESR Electrolytic Caps? I CAN’T FIND ARRGGG!
Post by: blearyeyes on November 20, 2023, 12:06:16 AM
I searched, everywhere, including this forum. I can't seem to find them anywhere.
Most are 11mm tall. What is considered "low profile"???
My head is going to explode.
Does anyone have a source? 
A way to search? Low profile gives no returns.
Title: Re: Source for Low Profile / Low ESR Electrolytic Caps? I CAN’T FIND ARRGGG!
Post by: jessenator on November 20, 2023, 12:35:58 AM
The low-profile caps I have are just under 6mm (can't make out the brand mark), but these Panasonic's are listed as 5mm length. Length is what you want to search, and it seems that around 5mm height is what you need to be "low profile"

https://www.mouser.com/ProductDetail/Panasonic/ECE-A1CKS220B?qs=rMMd5vBiahpb8aNMFglKXw%3D%3D

IDK if this link will work, but here's the search I did:
https://www.mouser.com/c/passive-components/capacitors/aluminum-electrolytic-capacitors/aluminum-electrolytic-capacitors-radial-leaded/?diameter=4%20mm~~6.3%20mm&length=5%20mm&voltage%20rating%20dc=16%20VDC~~450%20VDC&instock=y&rp=passive-components%2Fcapacitors%2Faluminum-electrolytic-capacitors%2Faluminum-electrolytic-capacitors-radial-leaded%7C~Voltage%20Rating%20DC%7C~Diameter
Title: Re: Source for Low Profile / Low ESR Electrolytic Caps? I CAN’T FIND ARRGGG!
Post by: gordo on November 20, 2023, 12:43:31 AM
Yeah Mouser has been go to.  Anything in particular that I might have kicking around?
Title: Re: Source for Low Profile / Low ESR Electrolytic Caps? I CAN’T FIND ARRGGG!
Post by: madbean on November 20, 2023, 01:03:50 AM
Another crazy long link. Anything between 5 and 7mm length is what you want. But, also be careful of the larger values. 100uF low profile gets pretty chunky.

https://www.mouser.com/c/passive-components/capacitors/aluminum-electrolytic-capacitors/aluminum-electrolytic-capacitors-radial-leaded/?diameter=4%20mm~~6.3%20mm&lead%20spacing=1.5%20mm~~2.5%20mm&length=5%20mm~~7%20mm&product=General%20Purpose%20Electrolytic%20Capacitors&termination%20style=Radial&voltage%20rating%20dc=16%20VDC~~50%20VDC&instock=y&rp=passive-components%2Fcapacitors%2Faluminum-electrolytic-capacitors%2Faluminum-electrolytic-capacitors-radial-leaded%7C~Length%7C~Voltage%20Rating%20DC%7C~Lead%20Spacing%7C~Diameter

Low ESR is a different matter. However, I do have a link for a low profile low ESR cap I've used often!!
https://www.mouser.com/ProductDetail/80-ESY276M025AC2AA
Title: Re: Source for Low Profile / Low ESR Electrolytic Caps? I CAN’T FIND ARRGGG!
Post by: Aentons on November 20, 2023, 03:11:26 AM
I've noticed more caps marked as low impedance. Are those the same as low esr?
Title: Re: Source for Low Profile / Low ESR Electrolytic Caps? I CAN’T FIND ARRGGG!
Post by: blearyeyes on November 20, 2023, 06:34:28 AM
I tried to read up about ESR and there is a math equation that includes a bunch of stuff. Resistance is part of it. There is TAN with a squiggly icon after it which is an indicator. I guess it matters what the circuit is around it... I don't know.
Title: Re: Source for Low Profile / Low ESR Electrolytic Caps? I CAN’T FIND ARRGGG!
Post by: blearyeyes on November 20, 2023, 07:45:41 AM
Quote from: gordo on November 20, 2023, 12:43:31 AM
Yeah Mouser has been go to.  Anything in particular that I might have kicking around?

Thanks Gordo, I think I got it sorted...
Title: Re: Source for Low Profile / Low ESR Electrolytic Caps? I CAN’T FIND ARRGGG!
Post by: blearyeyes on November 20, 2023, 07:49:06 AM
Quote from: jessenator on November 20, 2023, 12:35:58 AM
The low-profile caps I have are just under 6mm (can't make out the brand mark), but these Panasonic's are listed as 5mm length. Length is what you want to search, and it seems that around 5mm height is what you need to be "low profile"

https://www.mouser.com/ProductDetail/Panasonic/ECE-A1CKS220B?qs=rMMd5vBiahpb8aNMFglKXw%3D%3D

IDK if this link will work, but here's the search I did:
https://www.mouser.com/c/passive-components/capacitors/aluminum-electrolytic-capacitors/aluminum-electrolytic-capacitors-radial-leaded/?diameter=4%20mm~~6.3%20mm&length=5%20mm&voltage%20rating%20dc=16%20VDC~~450%20VDC&instock=y&rp=passive-components%2Fcapacitors%2Faluminum-electrolytic-capacitors%2Faluminum-electrolytic-capacitors-radial-leaded%7C~Voltage%20Rating%20DC%7C~Diameter

That is a great link thanks Jessenator! I'm gonna save that and stock up.
Title: Re: Source for Low Profile / Low ESR Electrolytic Caps? I CAN’T FIND ARRGGG!
Post by: blearyeyes on November 20, 2023, 08:04:56 AM
Quote from: madbean on November 20, 2023, 01:03:50 AM
Another crazy long link. Anything between 5 and 7mm length is what you want. But, also be careful of the larger values. 100uF low profile gets pretty chunky.

https://www.mouser.com/c/passive-components/capacitors/aluminum-electrolytic-capacitors/aluminum-electrolytic-capacitors-radial-leaded/?diameter=4%20mm~~6.3%20mm&lead%20spacing=1.5%20mm~~2.5%20mm&length=5%20mm~~7%20mm&product=General%20Purpose%20Electrolytic%20Capacitors&termination%20style=Radial&voltage%20rating%20dc=16%20VDC~~50%20VDC&instock=y&rp=passive-components%2Fcapacitors%2Faluminum-electrolytic-capacitors%2Faluminum-electrolytic-capacitors-radial-leaded%7C~Length%7C~Voltage%20Rating%20DC%7C~Lead%20Spacing%7C~Diameter

Low ESR is a different matter. However, I do have a link for a low profile low ESR cap I've used often!!
https://www.mouser.com/ProductDetail/80-ESY276M025AC2AA

Thanks Brian, your link helped me reverse engineer Mousers search engine. Then after getting things one piece at a time, searching and ordering...I noticed your link to the shopping cart in the docs. Figures!!... hehe 😜