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Thermal solutions for car amps
Thermal solutions for car amps
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Old 19th January 2019, 02:46 AM   #11
Perry Babin is offline Perry Babin  United States
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Join Date: Nov 2003
Location: Louisiana
The 1/2" is commonly used on the older Orion and Rockford amps so it's good to keep on hand but you don't need 2 different sizes for this amp.
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Old 22nd February 2019, 10:13 PM   #12
Cartel is offline Cartel
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Thermal solutions for car amps
Hi Chris,

Due to the cost and complexity of shipping our products to Canada, we are only able to accept orders from businesses and schools. We’ve canceled your order. If this material is not for personal use, please resubmit your order online using the business or school name.

Cheryl
330-995-5875

what the f***


Anyone know where I can get these parts?

McMaster-Carr treated me like a piece of dirt.

High-Temperature Silicone Rubber Strip
with Adhesive-Back, 3/4" x 36", 1/16" Thick

High-Temperature Silicone Rubber Strip
with Adhesive-Back, 3/4" x 36", 3/32" Thick

Super-Corrosion-Resistant Cup-Point Set Screw
316 Stainless Steel, M5 x 0.8 mm Thread, 10 mm Long

Last edited by Cartel; 22nd February 2019 at 10:32 PM.
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Old 22nd February 2019, 11:41 PM   #13
phase is offline phase  United States
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Maybe these folks will decide to ship to you;

CHR Strip N Stick Silicone Rubber Tape .063 - Custom Width – ABLE123
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Old 23rd February 2019, 04:05 AM   #14
Cartel is offline Cartel
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Join Date: Jan 2019
Thermal solutions for car amps
Amazon.com: .062" 12" x 12" Silicone Rubber Sheets 60A Medium Hardness: Industrial & Scientific
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Old 23rd February 2019, 02:18 PM   #15
NadaD is offline NadaD
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24mm x 39cm x 0.12mm Mica Insulator Sheets Replacement 300pcs-in Washers from Home Improvement on Aliexpress.com | Alibaba Group
Bit smaller size, should fit for two transistors.
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Old 5th March 2019, 11:06 AM   #16
Cartel is offline Cartel
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Join Date: Jan 2019
Thermal solutions for car amps
Quote:
Originally Posted by Perry Babin View Post
It's 'probably' OK but I'd likely replace it. Something like the mcmaster 1466N12 would be good if there is enough clearance for it (there should be). That's the part number for 1/2" tape. You may need 3/4 or 1"/
Well I'm running into trouble with my silcone pads.
They seem to be too thick and they dont make contact with the smaller TO220 parts.

This is pretty stressful.

I got the kapton on there with a light skim of 340 grease but this silcone pad is giving me greif.

It is .062" which is 1/16" but you can see theres an issue.

Any suggestions?





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Old 5th March 2019, 11:55 AM   #17
Perry Babin is offline Perry Babin  United States
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Location: Louisiana
Are you sure that yellow material is Kapton?

If you have it on the heatsink with 340 between it and the sink and you press the back of a finger down onto the material, does it feel about as cold as if you'd put the back of your finger on the bare heatsink?

You can use a thin piece of non-corrugated cardboard to make up for the slight difference between the large and small transistors.
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Old 5th March 2019, 12:12 PM   #18
Cartel is offline Cartel
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Join Date: Jan 2019
Thermal solutions for car amps
Quote:
Originally Posted by Perry Babin View Post
Are you sure that yellow material is Kapton?

If you have it on the heatsink with 340 between it and the sink and you press the back of a finger down onto the material, does it feel about as cold as if you'd put the back of your finger on the bare heatsink?

You can use a thin piece of non-corrugated cardboard to make up for the slight difference between the large and small transistors.
Good morning Perry.
Yes its the MT "plus"
Its a new design that is more thermally conductive than the MT

http://www.dupont.com/products-and-s...n-mt-plus.html
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Old 6th March 2019, 02:05 PM   #19
Cartel is offline Cartel
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Join Date: Jan 2019
Thermal solutions for car amps
Well as much as I wanted to just use the silicone and pretend it would be ok, I took the amp back in and I'm going to soak the old cardboard to swell it up and re-use it.
The silicone would have been perfect but the clearance is very critical and it just wans't right.

I really dont want to cook something being in a hurry.

Sucks but it shouldn't be long.

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Old 6th March 2019, 04:05 PM   #20
jkrokenberger is offline jkrokenberger  United States
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How thick is the MT+? If it's more than 5mils I would think the lower thermal resistance would be negated by the thickness compared to 1mil HN Kapton. I've been fitting my AM series PPI amps with 1mil HN/compound after stripping the powdercoat where the TO-220 devices interface with the sink. The temp spread is much more even on them with that compared to the mica/compound over the powdercoat.
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