CW7270
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CircuitWorks Thermal Paste

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CircuitWorks Thermal Paste

Thermal compound for heat transfer away from electronics and electrical components

CircuitWorks® Thermal Paste facilitates heat transfer away from electrical/electronic components. This heavy consistency material is thickened with a heat conductive filler to maintain a positive heat sink seal in electrical/electronic equipment.

Heat Sink Grease (CT40-5)

  • Silicone-base
  • Thermally stable from -40°F(-40°C) to 392°F (200°C)
  • Meets MIL-DTL-47113D Type I

Silicone Free Thermal Paste (CW7270)

  • Silicone free compound avoids silicone migration
  • Thermally stable from -99.4°F(-73°C) to 392°F (200°C).  
  • Exceeds MIL-C-47113 for thermal conductivity

Boron Nitride Thermal Paste (CW7250, CW7250KG)

  • Provides maximum thermal conductivity with superior dielectric properties
  • Silicone free compound will not harden or dry out
  • Thermally stable from -99ºF (-73ºC) to 392ºF (200ºC)
  • Exceeds MIL-C-47113 for Thermal Conductivity

Features & Benefits

  • Facilitates heat transfer between circuit components and heat sinks
  • Excellent thermal and dielectric properties
  • Will not dry out, harden, or melt
  • Noncorrosive and nonflammable

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Part # Size Units Per Case
CT40-5

Heat Sink Grease - 5 oz. / 142 g tube

12 blister cards
CW7270

Silicone Free - 7 g (0.25 oz.) syringe

12 blister cards
CW7250

Boron Nitride - 3.4 g (0.12 oz.) syringe

12 blister packs
Order from an authorized distributor

FAQ's

My thermal paste seems like it's getting dried out. Can I re-solvate it?

Try adding VMP naphtha (a common paint thinner) to the compound at approximately 1 part VMP to 100 parts compound. Mix thoroughly to get it back to the consistency required. This is mostly by “eyeball” so you may need a little less or a little more, depending on how dry the material is.

How do I figure out the shelf life of a product?

The shelf life of a product can be found on either the technical data sheet (TDS), available on the product page, or by looking on the certificate on conformance (COC). The COC can be downloaded by going to https://www.chemtronics.com/coc. Once you have the shelf life, you will need to add it to the manufacture date for a use-by date. The manufacture date can be identified by the batch number. The batch code used on most of our products are manufacture dates in the Julian Date format. The format is YYDDD, where YY = year, DDD = day. For example, 19200 translates to the 200th day of 2019, or July 19, 2019. This webpage explains and provides charts to help interpret our batch numbers: https://www.chemtronics.com/batch-codes.

Articles

Repairing & Avoiding Electronic Faults with Thermal Paste

Repairing & Avoiding Electronic Faults with Thermal Paste

Thermal grease, also known as thermal paste or thermal compound, is a substance used to improve the thermal conductivity between two surfaces, typically between a microprocessor and a heat sink. The purpose of thermal grease is to fill in the microscopic gaps and imperfections on the surface of the ...
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Circuit-Works Thermal Paste User's Guide

Circuit-Works Thermal Paste User's Guide

Thermal paste is called a lot of names, including thermal compound, heat sink compound, and thermal grease. Its job is to fill the gap between a heat generating device, most commonly a CPU, and the thermal transfer device, or mechanical heat sink. Why is thermal paste needed? CPU’s run very hot, and...
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Ultimate Guide to Benchtop PCB Rework & Repair

Ultimate Guide to Benchtop PCB Rework & Repair

The reality is that no soldering operation produces perfect assemblies every time. Even the highest quality components fail from time-to-time. That’s why understanding the best rework and repair methods and materials is so important for those who manufacture, maintain, or repair printed circuit boar...
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