[TechAssist] Re: Heat sink compound

  • From: "J Silverman" <greentron@xxxxxxx>
  • To: <techassist@xxxxxxxxxxxxx>
  • Date: Sat, 9 Oct 2004 15:10:20 -0400

If you have learned something useful, maybe it was worth it.
Jerry Silverman
Greentron Inc
4 Newland Ave
Greenville SC 29609
Fax/Phone 864 232 3889
mail to: greentron@xxxxxxx
----- Original Message -----
From: <BOSS1996@xxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Saturday, October 09, 2004 11:17 AM
Subject: [TechAssist] Re: Heat sink compound


> Guys, please don't take this wrong, but has'nt this topic been beat to
death
> by now? I'm getting tired of seeing "heat sink compound" in my e-mail 20
times
> a day. Since this mailing list is very busy maybe we could limit these
kind
> of posts?
> Robert Cardoza
> Picture Perfect Electronics
> Pembroke Pines, Fla
> 954-435-5868
>
>
>
>
>
> In a message dated 10/9/2004 11:10:21 AM Eastern Daylight Time,
> jr.myers@xxxxxxxxxxx writes:
> 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>
>
>>>>-----------------------------------------------------------------------
> >>>>-
> >>>>
> >>>>>>TTE> -
> >>>>>>JS>> ----
> >>>>>>
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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>
>
>>>>-----------------------------------------------------------------------
> >>>>-
> >>>>
> >>>>>>TTE> -
> >>>>>>JS>> ----
> >>>>>>
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> >>>>>>>>>
> >>>>>>>>>
> >>>>>>
> >>>>>>TTE>
> >>>>>>
> >>>>gjc>
>
>>>>-----------------------------------------------------------------------
> >>>>-
> >>>>
> >>>>>>TTE> --
> >>>>>>JS>> ---
> >>>>>>
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> >>>>>>
> >>>>>>JS>>
> >>>>>>TTE>
> >>>>>>
> >>>>gjc>
>
>>>>-----------------------------------------------------------------------
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> >>>>>>
> >>>>gjc>
>
>>>>-----------------------------------------------------------------------
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> >>>>>>
> >>>>gjc>
>
>>>>-----------------------------------------------------------------------
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> >>>>>>
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> >>>>gjc>
>
>>>>-----------------------------------------------------------------------
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>
>>>>-----------------------------------------------------------------------
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> >>
> >>
> >>EG>
> --------------------------------------------------------------------------
---
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> >>
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> >>
> >
> > Guys, please don't take this wrong, but has'nt this topic been beat to
> death by now? I'm getting tired of seeing "heat sink compound" in my
e-mail 20
> times a day. Since this mailing list is very busy maybe we could limit
these kind
> of posts?
>
>
>
>
>
>
>
> >
> >
> >
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