THERMFLOW™ materials are thermally
enhanced polymers designed to
minimize the thermal resistance
between power dissipating electronic
components and their associated heat
sinks. This low thermal resistance path
maximizes heat sink performance and
improves the reliability of microprocessors,
memory modules, DC/DC converters
and power modules.
The key feature of THERMFLOW materials is their phase-change characteristic. At room temperature, THERMFLOW materials are solid and easy to handle. This allows them to be consistently and cleanly applied as dry pads to a heat sink or component surface. THERMFLOW material softens as it reaches component operating temperatures. With light clamping pressure it will readily conform to both mating surfaces, similar to thermal grease. This ability to completely fill interfacial air gaps and voids typical of component packages and heat sinks allows THERMFLOW pads to outperform nonflowing elastomeric or graphite-based thermal pads and achieve performance comparable to thermal grease.
THERMFLOW materials are electrically non-conductive. However, since metal-to-metal contact is possible after the material undergoes phase-change in a typical heat sink assembly, THERMFLOW pads should not be used as electrical insulators.
The key feature of THERMFLOW materials is their phase-change characteristic. At room temperature, THERMFLOW materials are solid and easy to handle. This allows them to be consistently and cleanly applied as dry pads to a heat sink or component surface. THERMFLOW material softens as it reaches component operating temperatures. With light clamping pressure it will readily conform to both mating surfaces, similar to thermal grease. This ability to completely fill interfacial air gaps and voids typical of component packages and heat sinks allows THERMFLOW pads to outperform nonflowing elastomeric or graphite-based thermal pads and achieve performance comparable to thermal grease.
THERMFLOW materials are electrically non-conductive. However, since metal-to-metal contact is possible after the material undergoes phase-change in a typical heat sink assembly, THERMFLOW pads should not be used as electrical insulators.
Unit of Measure
Test Method Color |
N/A Visual |
Color |
N/A Gray |
Carrier |
N/A None - Free film |
Test Method Thicknesses |
N/A ASTM D374 |
Standard Thickness |
N/A 0.125 mm0.005 in |
Test Method Specific Gravity |
N/A ASTM D792 |
Specific Gravity |
N/A 2.4 |
Test Method Phase Transition Temperature |
N/A ASTM 3418 |
Phase Transition Temperature |
N/A 45/62 ºC |
Weight Loss, 125 ºC for 48 h |
N/A < 0.5 % |
Test Method Thermal Impendance |
N/A ASTM D5470 |
Thermal Impendance at 70 ºC, at 69 kPa (10 psi) |
N/A 0.13 ºC-cm²/W0.02 ºC-in²/W |
Thermal Impendance at 70 ºC, at 172 kPa (25 psi) |
N/A 0.097 ºC-cm²/W0.015 ºC-in²/W |
Thermal Impendance at 70 ºC, at 345 kPa (50 psi) |
N/A 0.052 ºC-cm²/W0.008 ºC-in²/W |
Operating Temperature Range |
N/A –55 to 125 ºC–67 to 257 ºF |
Test Method Volume Resistivity |
N/A ASTM D257 |
Volume Resistivity |
N/A Nonconductive |
Test Method Voltage Breakdown |
N/A ASTM D149 |
Test Method Flammability Rating |
N/A UL 94 |
Flammability Rating |
N/A Not tested |
Test Method RoHS Compliant |
N/A Chomeric Certification |
RoHS Compliant |
N/A Yes |
Test Method Shelf Life |
N/A Chomerics |
Shelf Life, Months from Date of Shipment |
N/A 12 |