In need of a large heatsink

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DerStrom8

Super Moderator
Hi guys,

Once again I find myself in need of a large heatsink. The parts being mounted to it form a rectangle with dimensions 4.33" x 6.3" (110mm x 160mm), so I'm looking for a heatsink with sides at least those lengths. Unfortunately the parts MUST remain together, so turning them is not an option. If anyone has any large heatsinks laying around unused, feel free to contact me. Maybe we can work out a deal!

Thanks,
Matt
 
Picture please
The parts being mounted to it form a rectangle with dimensions 4.33" x 6.3"
Click to expand...
Are the parts inside the 4x6 rectangle?
Can you use a heat sink with a fan?
 
Hi Ron, sorry--meant to post a picture before.

The parts are two CM300 half-bridge IGBT modules mounted side-by-side, as seen in this photo underneath the large electrolytic capacitor:



The modules, when placed next to each other like this, make a 4.33" x 6.3" rectangle, so the heat sink would have to be larger than that in order for them to fit. Depending on the style, a heat sink with a fan would be great--I plan to use a fan anyway.

Thanks!
Matt
 
Thanks for the links, KISS.

I said "large" because it would be nice to have a little extra room to mount other devices, but it's really not necessary. That second link is great, I may use that--the prices are much better than what I was finding on ebay.

Matt
 
I thought I had the heat sink but not so.
I have a 8 foot lengths of heat sink that is 45mm across and the fin height is 25 or 14mm. Two pieces is not wide enough.
I also have some 3 inch square pieces with fans.
There is also a 8 foot length of "audio amp TO-3 " heat sink but the fins are on both sides. The big mill is not running so I can't mill off some of the fins.
I can send pictures.
 
Thanks Ron and KISS.

KeepItSimpleStupid , it looks like the shipping costs are really where they get you on HeatsinkUSA. It'll cost $35 to get the smallest usable size, and while that may seem cheap overall, I really need to watch how much I spend on this project. I am significantly over-budget as it is

I am actually hoping to sell off some of my older stuff, or things I bought and realized I wouldn't need....

Thanks again,
Matt
 
From theor site:


It should fit into a USPS flat rate box for about $6.00 shipping + their $5.00 handling. US sipping usually runs about $10-$12 minimum.
 
I'll keep looking over my options, but that does seem the most promising at this point. Thanks a lot KISS!

Matt
 
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