TMM® thermoset laminates are high-performance materials designed for RF and microwave applications requiring excellent thermal and electrical stability. These materials offer a range of dielectric constants, low dissipation factors, and superior mechanical and thermal properties.
Material Options and Specifications
Grade
Dielectric Constant (Dk)
Loss Tangent (Df)
Thermal Conductivity (W/m·K)
Moisture Absorption (%)
Flammability
TMM3
3.27 ± 0.03
0.0020
0.70
< 0.10
UL 94 V-0
TMM4
4.50 ± 0.05
0.0020
0.70
< 0.10
UL 94 V-0
TMM6
6.00 ± 0.10
0.0023
0.70
< 0.10
UL 94 V-0
TMM10
9.20 ± 0.20
0.0020
0.72
< 0.10
UL 94 V-0
TMM10i
9.80 ± 0.20
0.0018
0.72
< 0.10
UL 94 V-0
TMM13i
12.90 ± 0.20
0.0017
0.79
< 0.10
UL 94 V-0
Key Features
Electrical Stability:
Nearly isotropic dielectric constant across temperature and frequency ranges.
Minimal drift over time and environmental exposure.
Thermal Management:
High thermal conductivity for superior heat dissipation.
Low Coefficient of Thermal Expansion (CTE) matches copper for robust reliability.
Mechanical Strength:
High peel strength for copper cladding.
Excellent dimensional stability for precise circuit designs.
Environmental Resistance:
Low moisture absorption ensures stable performance in humid conditions.
UL 94 V-0 flammability rating for safety compliance.
Applications
Aerospace and Defense: Radar systems, satellite communications.
Telecommunications: RF filters, base station antennas.
Automotive: Advanced driver-assistance systems (ADAS), collision avoidance radar.
Medical Devices: MRI coils, RF ablation systems.
Mechanical Properties
Property
Typical Value
Density
~2.2 g/cm³
CTE (Z-Axis)
30-50 ppm/°C
Tensile Strength
>6,000 psi
Copper Peel Strength
≥9 lbs/in (1 oz copper)
Processing Guidelines
Drilling:
Use carbide or diamond-coated drill bits for reduced burr formation.
Ensure proper cooling and chip evacuation.
Lamination:
Press temperatures between 220-230°C and uniform pressure application.
Metallization:
Suitable for standard electroless and electrolytic plating processes.
Storage:
Store in a cool, dry environment. Avoid direct exposure to sunlight or moisture.
Compliance and Certifications
RoHS compliant.
REACH compliant.
Low outgassing certified for aerospace applications.
