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CHO-THERM® Commercial Grade Thermal Insulator Pads are designed for use where solid thermal and electrical properties are required at an economical price. These products are offered as dry pads, or with an optional adhesive (PSA) layer for attachment. Materials with PSA are available die-cut on continuous rolls. Versions are offered with either polyimide or fiberglass reinforcement to protect pads against tear, cut-through and punctures.

Features/Benefits
  • Good thermal properties
  • Good to excellent dielectric strength
  • Excellent mechanical strength and puncture resistance
  • Available with and without acrylic PSA
  • UL recognized V-0 flammability rating
  • Meet RoHS specifications
  • Available on continuous rolls for easy peel and stick application
CHO-THERM - Comercial Grade Thermally Conductive Electrical Insulator Pads
Unit of Measure
Items CHO-THERM - Comercial Grade Thermally Conductive Electrical Insulator Pads
T609
CHO-THERM® - Comercial Grade Thermally Conductive Electrical Insulator Pads
CHO-THERM - Comercial Grade Thermally Conductive Electrical Insulator Pads
T444
CHO-THERM® - Comercial Grade Thermally Conductive Electrical Insulator Pads
CHO-THERM - Comercial Grade Thermally Conductive Electrical Insulator Pads
1674
CHO-THERM® - Comercial Grade Thermally Conductive Electrical Insulator Pads
CHO-THERM - Comercial Grade Thermally Conductive Electrical Insulator Pads
T441/TH 0.20
CHO-THERM® - Comercial Grade Thermally Conductive Electrical Insulator Pads
CHO-THERM - Comercial Grade Thermally Conductive Electrical Insulator Pads
T441/TH 0.33
CHO-THERM® - Comercial Grade Thermally Conductive Electrical Insulator Pads
Test Method Color N/A Visual
Color N/A Light green N/A Beige N/A Blue N/A Pink N/A Pink
Test metod Carrier N/A Visual
Reinforcement Carrier N/A Fiberglass N/A Kapton ® MT N/A Fiberglass N/A Fiberglass N/A Fiberglass
Test Method Thicknesses N/A ASTM D374
Thickness N/A 0.25 mm0.010 in N/A 0.08 mm0.003 in N/A 0.25 mm0.010 in N/A 0.20 mm0.008 in N/A 0.33 mm0.013 in
Thickness Tolerance N/A ± 0.025 mm± 0.001 in N/A ± 0.013 mm± 0.0005 in N/A ± 0.025 mm± 0.001 in N/A ± 0.025 mm± 0.001 in N/A ± 0.025 mm± 0.001 in
Test Method Specific Gravity N/A ASTM D792
Specific Gravity N/A 2.10 N/A 1.70 N/A 2.45 N/A 2.45 N/A 2.45
Test Method Hardness N/A ASTM D2240
Hardness, Shore A N/A 70 N/A 90 N/A 85 N/A 80 N/A 80
Operating Temperature Range N/A –40 to 200 ºC–40 to 392 ºF
Test Method Thermal Impedance N/A ASTM D5470
Thermal Impedance N/A 2.1 ºC-cm²/W0.33 ºC-in²/W N/A 2.4 ºC-cm²/W0.37 ºC-in²/W N/A 2.6 ºC-cm²/W0.41 ºC-in²/W N/A 2.6 ºC-cm²/W0.41 ºC-in²/W N/A 3.6 ºC-cm²/W0.56 ºC-in²/W
Test Method Apparen Thermal Conductivity N/A ASTM D5470
Apparen Thermal Conductivity N/A 1.5 W/m·K N/A 0.4 W/m·K N/A 1.0 W/m·K N/A 1.1 W/m·K N/A 1.1 W/m·K
Test Method Heat Capacity N/A ASTM E1269
Heat Capacity N/A 1.0 J/g-ºC
Test Method Coefficient of Thermal Expansion N/A ASTM E831
Coefficient of Thermal Expansion N/A 150 ppm/ºC N/A 400 ppm/ºC N/A 300 ppm/ºC N/A 300 ppm/ºC N/A 300 ppm/ºC
Test Method Volume Resistivity Dry N/A ASTM D257
Volume Resistivity Dry N/A 1014 O/cm
Test Method Volume Resistivity Wet N/A ASTM D257
Volume Resistivity Wet N/A Not tested N/A Not tested N/A Not tested N/A 1014 O/cm N/A 1014 O/cm
Test Method Voltage Breakdown Dry N/A ASTM D149
Voltage Breakdown Dry N/A 4000 Vac N/A 5000 Vac N/A 2500 Vac N/A 8700 Vac N/A 11400 Vac
Test Method Voltage Breakdown Wet N/A ASTM D149
Voltage Breakdown Wet N/A Not tested N/A Not tested N/A Not tested N/A 8100 Vac N/A 10500 Vac
Test Method Tensile Strength N/A ASTM D412
Tensile Strength N/A 26.9 MPa3900 psi N/A 20.7 MPa3000 psi N/A 10.3 MPa15000 psi N/A 19.3 MPa2800 psi N/A 17.3 MPa2500 psi
Test Method Tear Strength N/A ASTM D642
Tear Strength N/A 52.5 kN/m300 lb/in N/A 26.3 kN/m150 lb/in N/A 17.5 kN/m100 lb/in N/A 23.6 kN/m135 lb/in N/A 19.3 kN/m110 lb/in
Test Method Elongation N/A ASTM D412
Elongation N/A 30 % N/A N/A 2 % N/A 40 % N/A 40 %
Test Method Flammability Rating N/A UL 94
Flammability Rating N/A V-0
Test Method RoHS Compliant N/A Chomeric Certification
RoHS Compliant N/A Yes
Test Method Outgassing N/A ASTM E595
Outgassing TML N/A Not tested N/A Not tested N/A 0.45 % N/A Not tested N/A Not tested
Outgassing CVCM N/A Not tested N/A Not tested N/A 0.20 % N/A Not tested N/A Not tested
Test Method Shelf Life N/A Chomerics
Shelf Life, Months from Dry Pad N/A 24 N/A 12 N/A 24 N/A 24 N/A 24
Shelf Life, Months from Dry Pad with PSA N/A 6 N/A 12 N/A 12 N/A 12 N/A 12