new hei

[BROWN 70]

just bought a new summit hei. I thought id look it over and found there was no heat sink compound under the module. how can this module survive like that? has anyone else found this in a summit or other cheap hei? looks like I,ll make a trip to radio shack, to at least have a chance of this hei lasting a while. do you guys know if its called heat sink compound or something else? thanks, BROWN 70

[geezer#99]

IIRC it's called dialectic grease.

[tdangle]

It's best to get heat sink compound. It is a different makeup than dielectric grease which is meant more to seal electrical connections. heat sink compound is a blend of beryllium oxide and siloxane. and has a much higher thermal conductivity than dielectric grease (siloxane).

[Warrens69GMC]

Autozone SL203

http://www.autozone.com/miscellaneou...archText=sl203

[VetteVet]

I believe they use the same stuff under the processors in computer motherboards as well. Your local computer shop may have it on hand.

[BROWN 70]

thank you all, great info I,ll go to either radio shack or autozone. BROWN 70

['68OrangeSunshine]

Originally Posted by tdangle

It's best to get heat sink compound. It is a different makeup than dielectric grease which is meant more to seal electrical connections. heat sink compound is a blend of beryllium oxide and siloxane. and has a much higher thermal conductivity than dielectric grease (siloxane).

I believe you meant "thermal [NON-] conductivity''.
Sometimes it's hard to tell if you have the right stuff in the 2'' packet they give you, and a lot of autoparts store clerks [kids] don't know the difference. I know I didn't, when I blew thru a string of modules one hot summer in Tucson, until I got straightened out about the ''right stuff''.

[truckster]

Originally Posted by '68OrangeSunshine

I believe you meant "thermal [NON-] conductivity''.
Sometimes it's hard to tell if you have the right stuff in the 2'' packet they give you, and a lot of autoparts store clerks [kids] don't know the difference. I know I didn't, when I blew thru a string of modules one hot summer in Tucson, until I got straightened out about the ''right stuff''.

Believe it or not, it is conductivity. You want the heat sink compound to draw heat away from the module.

[GASoline71]

Originally Posted by VetteVet

I believe they use the same stuff under the processors in computer motherboards as well. Your local computer shop may have it on hand.

I always buy heat sink compound from Radio Shack.

Gary

[hjewell2]

Yes get heat sink compound. summit brand HEI has a bad rap about the wires under the cap not crimped correctly and pulling loose just an FYI.

[BROWN 70]

this is what I found at radio shack. it has zinc oxide and polydimethyl siloxane, hope this works well. thanks again for all the input. BROWN 70

['68OrangeSunshine]

Originally Posted by truckster

Believe it or not, it is conductivity. You want the heat sink compound to draw heat away from the module.

OK. I thought it was more of an insulating thing. Old dog that I am, I'm still learning.

Also all the Radio Shacks in my area are just Sprint stores. I went it one and asked for a cigarette lighter plug, as I wanted temporary 12V DC power for a CB radio. Kid tried to sell me a cigar hole charger for USB devices. When I said it was for CB power, he just looked at me and blinked like a cow.