Flat Electrolytic Capacitors...

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D from BC...

Posted: Sun May 11, 2008 10:08 pm

Guest

I stumbled across this...
A 330uF 200V flatpack capacitor.
http://www.cde.com/catalogs/MLS.pdf
It's 1/2" thick.
And also costs over $100 ea (mouser)
Yikes!

I need flatter...

I'd like to know if I can get 150uF at (no spam) 200V crammed below 10mm without
resorting to paralleling many capacitors.
Can be axial, radial or SMD.
Any mounting orientation is ok..
Currently Googling and browsing Digikey...

Possible?
Anybody been down this road?

D from BC
British Columbia
Canada

D from BC...

Posted: Mon May 12, 2008 9:36 pm

Guest

On Mon, 12 May 2008 02:14:45 -0700 (PDT), mkaras
<mkaras at (no spam) carousel-design.com> wrote:

Quote:

On May 11, 8:08 pm, D from BC <myrealaddr... at (no spam) comic.com> wrote:
I stumbled across this...
A 330uF 200V flatpack capacitor.http://www.cde.com/catalogs/MLS.pdf
It's 1/2" thick.
And also costs over $100 ea (mouser)
Yikes!

I need flatter...

I'd like to know if I can get 150uF at (no spam) 200V crammed below 10mm without
resorting to paralleling many capacitors.
Can be axial, radial or SMD.
Any mounting orientation is ok..
Currently Googling and browsing Digikey...

Possible?
Anybody been down this road?

D from BC
British Columbia
Canada

Try one of these combinations:

1) Nichicon UPZZD820MPD 82uF at (no spam) 200V radial lead 10mm x 31.5mm usage 2
in parallel

2) Vishay 516D476M100MN6AE3 47uF at (no spam) 100V axial lead 8mm x 20mm usage 3
in series

mkaras

UPZZD820MPD ??
I tried that in the search box on the Nichicon site.. Nadda..
Mouser...nadda
Digikey...nadda
Back to Nichicon site using the Parameter Search...82uF sorting by
diameter.
Ugh... it's UPZ2D820MPD... Z2 not ZZ

I guess I could grind off some of the plastic coating to get under
10mm.
Huhhh.. I have to do a lengthy analysis to see if 82uF will be ok..
I might have to buy a faster computer just to simulate the effects of
using less than 150uF.

Thanks

D from BC
British Columbia
Canada

D from BC...

Posted: Mon May 12, 2008 9:49 pm

Guest

On Mon, 12 May 2008 07:31:46 -0400, legg <legg at (no spam) nospam.magma.ca> wrote:

Quote:

On Sun, 11 May 2008 20:08:50 -0700, D from BC
myrealaddress at (no spam) comic.com> wrote:

I stumbled across this...
A 330uF 200V flatpack capacitor.
http://www.cde.com/catalogs/MLS.pdf
It's 1/2" thick.
And also costs over $100 ea (mouser)
Yikes!

I need flatter...

I'd like to know if I can get 150uF at (no spam) 200V crammed below 10mm without
resorting to paralleling many capacitors.
Can be axial, radial or SMD.
Any mounting orientation is ok..
Currently Googling and browsing Digikey...

UCC/NCC used to offer a high voltage FTK series that was radial lead
in an oval package - still 12.5mm minor dimension. Don't see these
advertized anywhere, now. 10mm can often be wangled to 12.5 by
removing printed wiring in the viscinity of the part body.

Flatness is often a bullshit requirement - research it carefully.

What's the actual requirement? Filtering? Energy storage? Hold-up
time? These can often be adressed more intelligently than by just
adding uF.

RL

I suppose it would be hold up time.
If the ripple current is too high my smps drops out of regulation.
150uF was the min. capacitance determined.
Also, and this is something I have to do homework on...
I believe the more ripple current, the shorter the capacitor lifetime.
My app has to run for about 7 years continuously.
IIRC the capacitor ripple current is about 0.5A peak-peak.

D from BC
British Columbia
Canada

D from BC...

Posted: Mon May 12, 2008 9:57 pm

Guest

On Mon, 12 May 2008 06:02:15 -0700 (PDT), Michael <mk5778 at (no spam) yahoo.com>
wrote:

Quote:

On May 11, 11:08 pm, D from BC <myrealaddr... at (no spam) comic.com> wrote:
I stumbled across this...
A 330uF 200V flatpack capacitor.http://www.cde.com/catalogs/MLS.pdf
It's 1/2" thick.
And also costs over $100 ea (mouser)
Yikes!

I need flatter...

I'd like to know if I can get 150uF at (no spam) 200V crammed below 10mm without
resorting to paralleling many capacitors.
Can be axial, radial or SMD.
Any mounting orientation is ok..
Currently Googling and browsing Digikey...

Possible?
Anybody been down this road?

D from BC
British Columbia
Canada

Photo flash caps? I use United Chemi-Con PH330VB50RV10x27LL (50uF,
330V, 10.1mm diameter, 26 mm long). At least hey are cheap; I think
they were $0.35 ea (500pc bag) when we bought it to start the project
couple years ago

Yah think that capacitor would survive if I squished in a vice.. Smile

Just a wee bit...
From 10.1mm to 9.9mm :P

D from BC
British Columbia
Canada

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