[TechAssist] Re: Heat sink compound
- From: Bil Green <tv.vcrrepair@xxxxxxxxxxx>
- To: al m <techassist@xxxxxxxxxxxxx>
- Date: Sat, 9 Oct 2004 10:25:29 -0700
Wheel bearing grease
Bil Green
PC 1000
Mammoth Lakes, CA 93546
760-924-1000
Saturday, October 9, 2004, 5:52:53 AM, you wrote:
am> GEEZ guys my original question was which is better the silicone or the
am> non-silicone.
am> Al Marquardt
am> ampm@xxxxxxx
am> Al Marquardt Electronic Repair
am> 206 W Main
am> Girardville Pa. 17935
am> ----- Original Message -----
am> From: "Bil Green" <tv.vcrrepair@xxxxxxxxxxx>
am> To: "Edward Gaidies" <techassist@xxxxxxxxxxxxx>
am> Sent: Saturday, October 09, 2004 1:33 AM
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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>>>>>>>>>
>>>>>>>>> P> Paul ,B
>>>>>>>>> P> Central TV&Video
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>>>>>>>>> P> Grover Beach Ca.
>>>>>>>>> P> (805)481-8084
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>>>>>>>>>
>>>>>>>>>
>>>>>> P>>>
>>>>>> TTE>
>>>>>>
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