Great deal on Heat Sinks!!!

[davidlzimmer]

Thought you all would like to see this. I bid on 6 at $1 each. Please don't overbid me! :-)

http://cgi.ebay.com/Aluminum-Heat-Si...QQcmdZViewItem

[davidlzimmer]

Just curious. Any buyers?

[Spasticteapot]

Tempting, but I can cast my own out of pure copper.

[davidlzimmer]

Wow!

Got any pics? Would you sell?

[jackinnj]

Thermal impedance would appear to be ~5 C/W

[rossl]

Originally posted by davidlzimmer
Just curious. Any buyers?

I put in a bid on 10. Thanks for the heads up!

[traw]

I actually bougoht 20 of them last auction he/she had. They are a little smallish, compared to others, but just about right for 1-2 chips at 35 volt rails. Also, they are new conditin, nice and clean.

[jackinnj]

Originally posted by traw
I actually bougoht 20 of them last auction he/she had. They are a little smallish, compared to others, but just about right for 1-2 chips at 35 volt rails. Also, they are new conditin, nice and clean.

Perhaps for +/- 28VDC, not +/- 35 VDC -- at least with the LM3886 -- take a look at the specification sheet.

[davidlzimmer]

"Thermal impedance would appear to be ~5 C/W"


jackinnj,

Is that Good? I'm cluless on that stuff. How do they rank. Planing to use 1 each on LM4780 project.

[rossl]

Originally posted by jackinnj



Perhaps for +/- 28VDC, not +/- 35 VDC -- at least with the LM3886 -- take a look at the specification sheet.

I was thinking of making a 3886 sandwich. The holes in the heat sinks look symmetrical, so two of them could be bolted together around a chipamp device. It's worth a try...

If they're not symmetrical... then I will get out the drill.