I’m looking at building a project that has a heatsink (for a TO-220) and I was going to use the “standard” one from Aavid, but I wanted to put the project into a case.
When looking through the heatsinks in the library (on KiCAD 5.1 at least), I saw that there is one that is 125x50x35mm that seemed to have mounting holes on the long edge. I like this idea and tried to find the part it was based off of but couldn’t. So does anyone know what part it is based on?
I do not think there is much standardisation in heatsink sizes.
Some heatsinks have 3/4 holes in “Ohmega” form extruded into the profile, for example:
Such holes work with self tapping screws.
The heatsink you found in the KiCad library has full round holes, I don’t know it’s origin, but it seems likely it is a custom job. Holes can be drilled in any heatsink with a thick enough base.
It looks like the Heatsink_Fischer_SK104-STC-STIC_35x13mm_2xDrill2.5mm
It’s in the library Heatsink, though without an ‘official’ 3D model, hence I made one up. Let me if you are interested.
Cheers
I haven’t looked at the actual part in the library, but based on the footprint name I’d look for part number SK104-STC-STIC made by manufacturer Fischer. If that doesn’t work then SK104-STC or `SK104-STIC’.
Typing in SK1 should bring it up.
Cheers
The SK104 is actually a smaller one.
Try this one Heatsink_125x35x50mm_3xFixationM3
Just start to type heatsink, and the rest will sort itself automatically.
Cheers
Actually I was referring to finding a datasheet for your suggested Fisher heatsink to make sure it is physically the correct one for the OP’s application. I can see now how I didn’t make that clear. Sorry for the confusion.
I normally get the heat sink and then just block out areas on the silkscreen and fab layers with simple lines. Too many heat sinks and no real cad skills on my side though but not needed for my projects. I just need to know where they sit on the board.
There is a way for everything! Search engines are your friends these days.
Just two examples.
https://www.cooltec.com/products/product-database.php
Then there are all the electronic parts distributers etc.
Plenty of sources to chose from.
Cheers
This topic was automatically closed 90 days after the last reply. New replies are no longer allowed.
