What do you call this type of heat sink?

[[email protected]]

Hi Everyone,

I was wondering what do you call the kind of rubber/foam type heat sink
you typically find attached on a IC in a small non/poorly ventilated
casing (e.g. pager, cell phone)? Its typically gray in colour and feels
soft and rubbery. I think some of the old Apple Powerbooks also use
them to vent heat to the casing.

Anyone also knows where I can buy them?

 

[Ivor Floppy]

Hi Everyone,

I was wondering what do you call the kind of rubber/foam type heat sink
you typically find attached on a IC in a small non/poorly ventilated
casing (e.g. pager, cell phone)? Its typically gray in colour and feels
soft and rubbery. I think some of the old Apple Powerbooks also use
them to vent heat to the casing.

Anyone also knows where I can buy them?

thermal interface pads.
http://www.warth.co.uk/site2003/blue_site/Introductions/products_fast.html
do quite a range of different types

The one called "Kool-Pads® HeatPath GTQ 2100 " looks like the same stuff
I've seen inside CDROMs etc.

 

[Mark]

note these are not heat sinks by themselves,

they conduct the heat away to some other surface

Mark

 

[[email protected]]

Hmm... actually the stuff I saw is much thicker (up to 3-5 mm thick)
and in some applications, I guess they act as a heat sink as the casing
is plastic and I guess there isn't any place for the heat to transfer
to.

Anyone knows where I can this kind of heat sink?