Insulating Films - heatsink interface material Jump to Navigation Tel (toll-free): +1-855-32-AAVID Search form Search Home Products Solutions Design Tech Tools & Docs Contact Our Company News & Events Interface Materials Check Distributor Stock Enter a part number for Customer Assistance Popular Products Design Services Useful Tech Tools Our Company pricing and availability. Contact Us Extrusions Advanced Thermal Engineering How to Select a Heat Sink About Aavid Insulating Films Get Design assistance Board Level Applications Engineering Support Decipher a Part Number News and Events Find a Distributor Liquid Cooling Product Development Performance Factor Table Management Team Thermalfilm Polyimide Plastic Films Find a Sales Rep Heat Pipe Technology Design Center Locations Flow Velocity Calculator Worldwide Locations RoHS Compliant Request a Quote Heat Sink Accessories Directions to Headquarters Placing an Order Interface Materials Disclaimer Thermalfilm and ThermalfilmMT are low cost polymide plastic insulating films designed to be an improved replacement for mica. These insulators have Terms and Conditions Customer Survey a distinctive amber color and can be easily recognised and assembled on a production line Returns Privacy Policy ThermalfilmMT, made from high performance KaptonMT material, provides thermal conductivity nearly 2-5 times greater than standard Thermalfilm. Both insulators have an extremely high resistance to flow or thin out under high compressive stresses, particularly at elevated temperatures. Excellent physical, mechanical and electrical properties remain nearly constant over a wide range of temperatures and frequencies. They are radiation resistant, have no melting points, and have no known organic solvents. The polymide plastic film is UL listed as a component in UL s publicationComponent - Plastic Materia dated September 18, 1969. The UL card number is E39505R, Guide QMFZ2 filed by E.I. du Pont de Nemours & Co., Inc. Thermalfilm is rated 94 V-O. Notes: Thermalfilm MT part numbers begin with46 . Insulator thickness is .05mm +/- 0.006mm (0.002 +/- 0.00025 ) unless otherwise specified. Dimensional tolerances are +/- 0.38mm(0.015 ), hole diameters are +/- 0.25mm (0.010 ) and angularity is +/- 1 1/2 unless otherwise specified. For TO-3 Part Number RoHS PCN A B C D 43.94 31.75 3.56 1.57 43-03-1G N/A (1.730) (1.250) (0.140) (0.062) 42.04 27.00 3.96 1.57 43-03-2G (1.655) (1.063) (0.156) (0.062) 42.04 27.00 3.96 4.22 43-03-3G N/A (1.655) (1.063) (0.156) (0.166) 39.70 26.67 3.56 1.57 43-03-4G (1.563) (1.050) (0.140) (0.062) 42.04 28.58 3.96 1.57 43-03-6G N/A (1.655) (1.125) (0.156) (0.062) For TO-5 and TO-18 Part Number RoHS PCN FIG. A B C 43-05-1G 9.91 5.08 0.91 A (TO-5) (0.390) (0.200) (0.036) 43-05-2G 9.91 5.08 0.91 B (TO-5) (0.390) (0.200) (0.036) 43-18-1G 6.35 2.54 0.91 A (TO-18) (0.250) (0.100) (0.036) Washer Part Number RoHS PCN Thread A B 6.35 3.05 43-02-4G 4 (0.250) (0.120) 14.27 5.16 43-02-10G 10 (0.562) (0.203) 20.62 6.73 43-02-25G 1/4 (0.812) (0.265) For TO-220, TO-126, Case 77, Case 199, Case 90, TO-218, TO-3P Part Number RoHS PCN A B C D 43-77-1G 11.10 7.92 3.56 2.36 (TO-126,case 77) (0.437) (0.312) (0.140) (0.093) 43-77-2G 17.45 14.27 5.54 3.18 (case 90,case 199) (0.687) (0.562) (0.218) (0.125) 43-77-6G 20.62 14.27 7.14 3.96 (case 90,case 199) (0.812) (0.562) (0.281) (0.156) 43-77-8G 18.92 13.84 5.38 3.81 (case 90,case 199) (0.745) (0.545) (0.212) (0.150) Insulating Films - heatsink interface material 43-77-20G 23.24 18.80 6.98 3.66 (TO-220,TO-218,TO-3P) (0.915) (0.740) (0.2.75) (0.144) For TO-66 Part Number A B C D Thickness 33.32 19.35 3.56 1.57 0.05 43-66-2 (1.312) (0.762) (0.140) (0.062) (0.002) For TO-218 Part Number RoHS PCN Thickness 0.05 43-02-95 N/A N/A (0.002) Bulk Thermalfilm Part Number RoHS PCN Thickness 4300G 2 MIL 0.051 (0.002) 4500 5 MIL N/A N/A 0.127 (0.005) Thermalfilm / ThermalfilmMT Property Electrical -Typical Value 25C Test Method Thermalfilm ThermalfilmMT 03mm (1 -mil) 3 177.2 x 10 volts/mm Dielectric Strength 3 ASTM D149-64 275.6 x 10 volts/mm (4500 volts/mm) (7,000 volts/mil) Dielectric Constant 3.5 4.3 ASTM D150-64T Dissipation Factor 0.002 0.002 ASTM D150-64T 17 17 Volume Resistivity 10 ohm-cm 10 ohm-cm ASTM D257-61 Surface Resistivity 16 16 ASTM D257-61 10 ohms 10 ohms Corona Start Voltage .025mm (1 - 465 volts 465 volts ASTM D1868-61T mil) Based on 0.05 mfd wound capacitor using 0.25mm (1 -mil) Insulation Resistance 100.00 megohm mfds. 100.00 megohm mfds. Film PHYSICAL 8 Ultimate Tensile Strength (MD) 1.72 x 10 Pa (25,000 psi) 103 MPa (1500 psi) ASTM D882-64T 5 Bursting Strength Test (Mullen) 3.10 x 10 Pa (45 psi) 0.31 MPa (45 psi) ASTM 0774-63 27,559 gm/mm (700 35,433 gm/mm (900 Tear Strength - Initial ASTM D1004-61 gm/mil) gm/mil) 3 3 3 3 Density 1.42 gm/cm (88.7 lb/ft ) 1.78 gm/cm (111.1 lb/ft ) ASTM D1505-63T Folding Endurance(MIT) >10,000 cycles >10,000 cycles ASTM D2176-63T THERMAL Melting Point None None Zero Strength Temperature 815C (1499F) 815C (1499F) Hot Bar (Du Pont Test) 435C (815F) 435C (815F) Weighted Probe on Heated Film Cut Through Temperature 525C (977F) 525C (977F) (Du Pont Test) -260C to 240C) -260C to 240C) Service Temperature (-464F to 464F) (-464F to 464F) 0.156Wm/K 0.379Wm/K Model TC-1000 Twin Heatmeter Thermal Conductivity (0.09 BTU/hr-ft-F) (0.219 BTU/hr-ft-F) Comparitive Tester Flammability V-0, UL card E39505 V-0, UL card E39505 UL 94 Note: One mil equals .001 inch Thermalfilm Resistance Calculator Enter the area of the device 2 mm that will contact the heat sink: Interface Resistance = Formula Thermalfilm MT Resistance Calculator Enter the area of the device 2 mm that will contact the heat sink: Interface Resistance = Formula Aavid will lead the electronics thermal management industry worldwide. 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