[TechAssist] Re: Heat sink compound
- From: Jim Myers <jr.myers@xxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Sat, 09 Oct 2004 10:10:01 -0500
Use cake mix if you want, all it does is fill in the pits so there is a
smooth surface for better heat transfer. Elmers maybe if you don't have
any Betty Crocker boxes around.
*******************************************************************************************************************
Since 1972
Jim Myers
Telrad Electronics
Fort Wayne, Indiana
al m wrote:
> GEEZ guys my original question was which is better the silicone or the
> non-silicone.
> Al Marquardt
> ampm@xxxxxxx
> Al Marquardt Electronic Repair
> 206 W Main
> Girardville Pa. 17935
> ----- Original Message -----
> From: "Bil Green" <tv.vcrrepair@xxxxxxxxxxx>
> To: "Edward Gaidies" <techassist@xxxxxxxxxxxxx>
> Sent: Saturday, October 09, 2004 1:33 AM
> Subject: [TechAssist] Re: Heat sink compound
>
>
>
>>I agree. For those who are keeping score, at this time it appears to
>>be a draw. Heat sinks are never hotter than the device they are
>>cooling, and then again they are (several replies).
>>
>>Thanks for all your input
>>
>>
>>Bil Green
>>PC 1000
>>Mammoth Lakes, CA 93546
>>760-924-1000
>>
>>Friday, October 8, 2004, 9:16:47 PM, you wrote:
>>
>>EG> Yes,;-)
>>
>>EG> Let it go...
>>
>>EG> It's like that question I asked my Secretary.
>>
>>
>>EG> I'm going down the Highway..in my Van.
>>EG> My speed is 70..Fly comes and sits on my nose,,I keep
>>swatting...buzzes
>>EG> around..relands on my nose.
>>EG> Now..is that fly using gravity..relation to motion..air relation..??
>>EG> Some "Rednecks" will question the "70" for miles or Kms. Never mind.
>>;-)
>>
>>
>>EG> -Ed-
>>EG> *****************************************************************
>>EG> Ed Gaidies
>>EG> Tel-Tek Electronics
>>EG> Ontario-Canada
>>EG> teltek3@xxxxxxxxxxxx
>>EG> teltek@xxxxxxxxx
>>
>>EG> On 9-Oct-04, at 12:03 AM, Bil Green wrote:
>>
>>
>>>>I am simply reporting what I have noticed when touching the plastic
>>>>body of the transistor or chip. And another tech mentioned the same
>>>>thing in his post.
>>>>
>>>>When you try to remove a plastic container from a 350 degree oven
>>>>it doesn't feel anywhere near as hot as a glass container. So maybe
>>>>the plastic portion of the transistor isn't as hot.
>>>>
>>>>I can hold my finger on a hot HOT for a few seconds, but often the
>>>>heat sink is too hot to even touch. Do you guys think this is just
>>>>my imagination?
>>>>
>>>>
>>>>
>>>>Bil Green
>>>>PC 1000
>>>>Mammoth Lakes, CA 93546
>>>>760-924-1000
>>>>
>>>>Friday, October 8, 2004, 7:39:43 PM, you wrote:
>>>>
>>>>gjc> Come on Bill,
>>>>
>>>>gjc> I respect you and very much enjoy your posts. But, it is
>>>>impossible for
>>>>gjc> a heat sink to be hotter than the transistor attached to it. I
>>>>have a
>>>>gjc> laser thermometer that I use. NEVER have I seen the heat sink to
>>>>be
>>>>gjc> hotter than the transistor. After all, where does the heat come
>>>>from?
>>>>
>>>>gjc> Plastic transistors are hardest to test, but the highest
>>>>temperature
>>>>gjc> measured would be equal to or lower than the actual temp. of the
>>>>gjc> semiconductor.
>>>>
>>>>
>>>>gjc> Ken Smith
>>>>gjc> Gulf Technical Services
>>>>gjc> 3034 Gulf Breeze Parkway
>>>>gjc> Gulf Breeze, FL 32563
>>>>gjc> 850-934-8324 (Voice), 850-932-0819 (fax)
>>>>
>>>>gjc> On Fri, 8 Oct 2004 14:00:41 -0700 Bil Green
>>>><tv.vcrrepair@xxxxxxxxxxx>
>>>>gjc> writes:
>>>>
>>>>>>Actually I'm right. When you place your finger against the plastic
>>>>>>section of a transistor or IC which is on a heat sink the
>>>>>>temperature usually feels cooler the heat sink.
>>>>>>
>>>>>>You can't place your finger on the rear (often metal) side which is
>>>>>>against the heat sink (and may be much hotter).
>>>>>>
>>>>>>But the heat sink is often hot enough to burn your finger (and
>>>>>>often the device is definitely NOT). Now maybe the plastic just
>>>>>>doesn't transfer the heat to your finger very well. I'm don't care
>>>>>>about science at this point, only what I see or feel.
>>>>>>
>>>>>>
>>>>>>Bil Green
>>>>>>PC 1000
>>>>>>Mammoth Lakes, CA 93546
>>>>>>760-924-1000
>>>>>>
>>>>>>Friday, October 8, 2004, 1:22:50 PM, you wrote:
>>>>>>
>>>>>>TTE> Bil...
>>>>>>TTE> Now you know better then that.
>>>>>>TTE> Basic Science.;-)
>>>>>>TTE> That would be Thermal Energy in reverse. The source has to be
>>>>>>more then
>>>>>>TTE> the dissipation.
>>>>>>
>>>>>>TTE> Ask Wayne.;-)
>>>>>>
>>>>>>TTE> -Ed-
>>>>>>
>>>>>>TTE> Tel-Tek Electronics
>>>>>>TTE> Ontario-Canada
>>>>>>
>>>>>>TTE> teltek3@xxxxxxxxxxxx
>>>>>>TTE> teltek@xxxxxxxxx
>>>>>>
>>>>>>
>>>>>>TTE> -----Original Message-----
>>>>>>TTE> From: techassist-bounce@xxxxxxxxxxxxx
>>>>>>TTE> [mailto:techassist-bounce@xxxxxxxxxxxxx] On Behalf Of Bil Green
>>>>>>TTE> Sent: Friday, October 08, 2004 3:57 PM
>>>>>>TTE> To: J Silverman
>>>>>>TTE> Subject: [TechAssist] Re: Heat sink compound
>>>>>>
>>>>>>TTE> Isn't the heat sink always hotter than the device? Heat rises
>>>>>>and is
>>>>>>TTE> stored by the heat sink.
>>>>>>
>>>>>>
>>>>>>TTE> Bil Green
>>>>>>TTE> PC 1000
>>>>>>TTE> Mammoth Lakes, CA 93546
>>>>>>TTE> 760-924-1000
>>>>>>
>>>>>>TTE> Friday, October 8, 2004, 9:50:46 AM, you wrote:
>>>>>>
>>>>>>JS>> So it sucks so much heat out that the heat sink is hotter than
>>>>>>the
>>>>>>TTE> devices
>>>>>>JS>> doing the heating? Patent it quick!
>>>>>>JS>> Jerry Silverman
>>>>>>JS>> Greentron Inc
>>>>>>JS>> 4 Newland Ave
>>>>>>JS>> Greenville SC 29609
>>>>>>JS>> Fax/Phone 864 232 3889
>>>>>>JS>> mail to: greentron@xxxxxxx
>>>>>>JS>> ----- Original Message -----
>>>>>>JS>> From: "Bil Green" <tv.vcrrepair@xxxxxxxxxxx>
>>>>>>JS>> To: "Paul" <techassist@xxxxxxxxxxxxx>
>>>>>>JS>> Sent: Thursday, October 07, 2004 4:46 PM
>>>>>>JS>> Subject: [TechAssist] Re: Heat sink compound
>>>>>>
>>>>>>
>>>>>>
>>>>>>>>>I have been using silicone grease. It's available in a tube,
>>>>>>
>>>>>>used for
>>>>>>
>>>>>>>>>servicing pools and hot tubs, also boats. Designed for high heat
>>>>>>>>>applications. Has worked well for many years (and it's clear).
>>>>>>>>>
>>>>>>>>>The heat sinks get much hotter than the transistors and chips so
>>>>>>
>>>>>>I
>>>>>>
>>>>>>>>>know for sure that it's working.
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>Bil Green
>>>>>>>>>PC 1000
>>>>>>>>>Mammoth Lakes, CA 93546
>>>>>>>>>760-924-1000
>>>>>>>>>
>>>>>>>>>Thursday, October 7, 2004, 10:10:38 AM, you wrote:
>>>>>>>>>
>>>>>>>>>P> Hi Al, been using GC silicone 10-8101 for about 20 years.
>>>>>>
>>>>>>Never
>>>>>>TTE> had a
>>>>>>JS>> repeat failure due to its use. I like it because it is less
>>>>>>messy
>>>>>>TTE> than the
>>>>>>JS>> white or pink stuff the mfgs use.
>>>>>>
>>>>>>>>>P>
>>>>>>
>>>>>>JS>> Paul
>>>>>>
>>>>>>>>>P> al m <ampm@xxxxxxx> wrote:
>>>>>>>>>P> I know it's off topic but I haven't thought of what I was
>>>>>>
>>>>>>buying
>>>>>>JS>> before.
>>>>>>
>>>>>>>>>P> Which is better the non silicone or the silicone compound?
>>>>>>>>>P> Al Marquardt
>>>>>>>>>P> ampm@xxxxxxx
>>>>>>>>>P> Al Marquardt Electronic Repair
>>>>>>>>>P> 206 W Main
>>>>>>>>>P> Girardville Pa. 17935
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>
>>>>>>P>>>
>>>>>>TTE>
>>>>>>
>>>>gjc>
>>>>-----------------------------------------------------------------------
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>>>>
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>>>>>>>>>
>>>>>>>>>P> Paul ,B
>>>>>>>>>P> Central TV&Video
>>>>>>>>>P> 911W Grand Ave
>>>>>>>>>P> Grover Beach Ca.
>>>>>>>>>P> (805)481-8084
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>
>>>>>>P>>>
>>>>>>TTE>
>>>>>>
>>>>gjc>
>>>>-----------------------------------------------------------------------
>>>>-
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>>>>>>>>>
>>>>>>>>>
>>>>>>
>>>>>>TTE>
>>>>>>
>>>>gjc>
>>>>-----------------------------------------------------------------------
>>>>-
>>>>
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>>>>>>
>>>>>>JS>>
>>>>>>TTE>
>>>>>>
>>>>gjc>
>>>>-----------------------------------------------------------------------
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>>>>>>TTE>
>>>>>>
>>>>gjc>
>>>>-----------------------------------------------------------------------
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