Heat sink for LM2940?

cutsrock

I am trying to locate a heat sink to use with the LM2940CT VR used by Parallax.· Any suggestions as where to look?· I have checked out Digikey but failed to locate one.

Jim.

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EPIC FAILURE -·When everyday run-of-the-mill failure just isn't good enough.

Mike Green

The LM2940CT comes in a TO-220 package. Heat sinks are readily available for this. RadioShack sells several different kinds for example.

MSDTech

Radio Shack sells a heat sink that fits the TO-220 (276-1363)·case for $1.49. Just bought one for a Basic Stamp OEM that was running a little warm.

cutsrock

Thanks MIke and MSDTech. I checked out the two Radio Shacks close to me and they had zip. I am now headed to Electronics Suppy in KCMO. Maybe they have some. I will also check out some other locations.

Thanks again.

Jim.

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EPIC FAILURE -·When everyday run-of-the-mill failure just isn't good enough.

StarMan

http://www.allelectronics.com/cgi-bin/item/HS-139/270/TO-220_HEATSINK_.html

cutsrock

Thanks Starman, I checked out the link and that heat sink, like the Radio Shack, takes up too much real estate on my board. At 1"x1.18' it uses a lot of my 2.5"x3.75" board'. I think I'll look in the Z axis and see if I can find a vertical.

Thanks.

Jim

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EPIC FAILURE -·When everyday run-of-the-mill failure just isn't good enough.

cutsrock

Found one. I had misread the dimensions on one that Digikey has.

Thanks to everyone for their input.

Jim

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EPIC FAILURE -·When everyday run-of-the-mill failure just isn't good enough.

cutsrock

A link to the heat sink I am using.

http://www.aavidthermalloy.com/cgi-bin/stdisp.pl?Pnum=577102b00000g

Jim

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EPIC FAILURE -·When everyday run-of-the-mill failure just isn't good enough.

Post Edited (cutsrock) : 3/28/2008 11:48:24 AM GMT