[TechAssist] Re: Heat sink compound
- From: Edward Gaidies <teltek3@xxxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Sat, 9 Oct 2004 08:38:00 -0400
Stop using it for hemorrhoids.;-)
-Ed-
*****************************************************************
Ed Gaidies
Tel-Tek Electronics
Ontario-Canada
teltek3@xxxxxxxxxxxx
teltek@xxxxxxxxx
On 9-Oct-04, at 5:26 AM, Doug Keller wrote:
> I end up losing the tube long before it's ever used up.
>
> Doug Keller
> Wis-Kel Electronics
> 101 Freeland Ave.
> Terra Alta, WV
> USA 26764
> dek@xxxxxxxxxxxxxx
> dek@xxxxxxxxxxxxxxx
> http://www.tech-assist.org
> "Learn from the mistakes of others, because you
> won't live long enough to make them all yourself"
>
>
>
>
>
> Edward Gaidies wrote:
>
>> As far as I'm concerned..it's a No Brainer.
>> I don't need a degree in Science..I don't even know how this
>> discussion
>> has gotten this far.
>> Just realize..if the heatsink is hot...the component is hotter, and
>> probably doing what it was designed for.
>> Keep in mind...most Power Devices run at 165 to 180 C.
>> Now that Celsius.
>> As long as the heat is dissipated, Good to go.
>> Try mounting a STR or STK...before you complete the job, and secure
>> those screws, put your finger between the component and the Heat sink,
>> and if you prefer, butter your finger with that Heat Sink compound.
>> You
>> will see how hot it is.
>> NTE has Min/Max recommended temps for their components..because of
>> simplicity, I connect my Temp. probe to the Heat sink. I don't care
>> what the actual temperature is of the component, but I want to check
>> rate of rise.
>> While were on this subject..Toshiba recommends not using too much
>> compound (any type) as per recent discussions on Heat Sink Compounds.
>> More is not better. I use GC in a tube. Last one... lasted me 6
>> years.
>> It's the white stuff and looks messy, but it works.
>>
>> Things change in Electronics, some of the old stuff won't.
>>
>> If this subject started because of component (Solid State) are running
>> too hot, we have gone through the gambit of adding extra Heat sinks to
>> our old Emersons (26"), we all know it was a "Work Around", and
>> according to ex-Emerson Technicians, a badly designed chassis.
>>
>> Expect to do many workarounds with the Chinese stuff coming in..;-)
>> Trouble is...Chassis and Design seem to change every 6 months.
>>
>> BTW..I'm working on a Memorex 20" (Dead).
>> Pulled out the regulator, which was shorted...and this is a first for
>> me...Marking on the Transistor is in Chinese writing....My NTE won't
>> let me do a searh in something that looks like a house with a crooked
>> roof, if I even knew how to enter it.;-)
>>
>>
>>
>> Taiwan is sitting there laughing their Axx off.
>>
>>
>>
>> -Ed-
>> *****************************************************************
>> Ed Gaidies
>> Tel-Tek Electronics
>> Ontario-Canada
>> teltek3@xxxxxxxxxxxx
>> teltek@xxxxxxxxx
>>
>> On 8-Oct-04, at 5:42 PM, Gary McCartney wrote:
>>
>>
>>
>>> Yes, if you place a temperature probe just above the component you'll
>>> notice that it is hotter than farther away on the heatsink.
>>>
>>>
>>>
>>>
>>> Gary McCartney
>>>
>>> McCartney Electronics
>>> Guelph Ontario Canada
>>> Est. 1984
>>> email: gary (at) number63.ca
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>> Edward Gaidies wrote:
>>>
>>>
>>>> Short of going into theory...trust me...the heat on the heat sink
>>>> has
>>>> to come from a source, The heat sink will hold the heat longer then
>>>> the
>>>> source, due to it's size, but the heat transfer plate on the solid
>>>> state component will always be a few degrees hotter.
>>>>
>>>> -Ed-
>>>> *****************************************************************
>>>> Ed Gaidies
>>>> Tel-Tek Electronics
>>>> Ontario-Canada
>>>> teltek3@xxxxxxxxxxxx
>>>> teltek@xxxxxxxxx
>>>>
>>>> On 8-Oct-04, at 4:56 PM, Kevin wrote:
>>>>
>>>>
>>>>
>>>>
>>>>> I have touched heat sinks that are hotter than the semiconductor
>>>>> that
>>>>> they are attached to. Maybe the back of the semi is hotter, but of
>>>>> course I can't test that theory.
>>>>>
>>>>> Kevin Wilks
>>>>> Kevin's TV & Video Repair
>>>>> Penticton BC Canada
>>>>> kevintv@xxxxxxx
>>>>>
>>>>>
>>>>> -----Original Message-----
>>>>> From: techassist-bounce@xxxxxxxxxxxxx
>>>>> [mailto:techassist-bounce@xxxxxxxxxxxxx] On Behalf Of Tel-Tek
>>>>> Electronics
>>>>> Sent: Friday, October 08, 2004 1:23 PM
>>>>> To: techassist@xxxxxxxxxxxxx
>>>>> Subject: [TechAssist] Re: Heat sink compound
>>>>>
>>>>> Bil...
>>>>> Now you know better then that.
>>>>> Basic Science.;-)
>>>>> That would be Thermal Energy in reverse. The source has to be more
>>>>> then
>>>>> the dissipation.
>>>>>
>>>>> Ask Wayne.;-)
>>>>>
>>>>> -Ed-
>>>>>
>>>>> Tel-Tek Electronics
>>>>> Ontario-Canada
>>>>>
>>>>> teltek3@xxxxxxxxxxxx
>>>>> teltek@xxxxxxxxx
>>>>>
>>>>>
>>>>> -----Original Message-----
>>>>> From: techassist-bounce@xxxxxxxxxxxxx
>>>>> [mailto:techassist-bounce@xxxxxxxxxxxxx] On Behalf Of Bil Green
>>>>> Sent: Friday, October 08, 2004 3:57 PM
>>>>> To: J Silverman
>>>>> Subject: [TechAssist] Re: Heat sink compound
>>>>>
>>>>> Isn't the heat sink always hotter than the device? Heat rises and
>>>>> is
>>>>> stored by the heat sink.
>>>>>
>>>>>
>>>>> Bil Green
>>>>> PC 1000
>>>>> Mammoth Lakes, CA 93546
>>>>> 760-924-1000
>>>>>
>>>>> 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
>>>>> 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
>>>>>>>
>>>>>>>
>>>>> had a
>>>>> JS> repeat failure due to its use. I like it because it is less
>>>>> messy
>>>>> 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>>
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>>>>>>> P> Paul ,B
>>>>>>> P> Central TV&Video
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>>>>>>> P> (805)481-8084
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