Electrical properties of SUMIKASUPER LCP

Volume resistivity

The volume resistivity of a material is defined as the electrical resistance of a unit cube of that material, and is measured by the current that flows through the material when a voltage of DC 500V is applied to the material for one minute. The higher the electrical insulation, the higher the volume resistivity. SUMIKASUPER LCP has high insulation due to the strong orientation of the skin layer.

Figure 3-6-1 Volume resistivity and dielectric breakdown voltage of SUMIKASUPER LCP

Figure 3-6-1 Volume resistivity and dielectric breakdown voltage of SUMIKASUPER LCP

Insulation properties

Breakdown voltage is an index that indicates how high a voltage a material can withstand without dielectric breakdown. Test results are reported in kV/mm, but the breakdown voltage is also affected by the thickness and temperature of the test piece. As with tensile strength, the thinner the material is, the higher the breakdown voltage of SUMIKASUPER LCP is. In addition, the breakdown voltage does not decrease easily even at high temperatures, and the material has excellent insulating properties.

Figure 3-6-2 Dependence of dielectric breakdown voltage on thickness of SUMIKASUPER LCP

Figure 3-6-2 Dependence of dielectric breakdown voltage on thickness of SUMIKASUPER LCP

Figure 3-6-3 Temperature dependence of dielectric breakdown voltage of SUMIKASUPER LCP

Figure 3-6-3 Temperature dependence of dielectric breakdown voltage of SUMIKASUPER LCP

Dielectric properties

The temperature and frequency dependence of the dielectric constant and dielectric tangent of SUMIKASUPER LCP is small and stable. In particular, LCP has a small dielectric tangent in the gigahertz range.

Figure 3-6-4 Temperature dependence of dielectric tangent

Figure 3-6-4 Temperature dependence of dielectric tangent

Figure 3-6-5 Frequency dependence of dielectric tangent

Figure 3-6-5 Frequency dependence of dielectric tangent

Table 3-6-1 Electrical properties of SUMIKASUPER LCP

Measurement items Test method E5008L E5008 E5204LB E4008 E4205R E6008 E6006L
Dielectric constant 1kHz IEC 60250 4.7 4.7 - 4.5 - 4.4 4.3
1MHz 4.2 4.2 3.1 3.9 2.9 3.9 3.7
1GHz 3.7 3.7 3.0 3.7 2.8 3.8 3.7
10GHz IEC 62810 3.8 3.7 3.0 3.6 2.9 3.7 3.5
Dielectric tangent 1kHz IEC 60250 0.013 0.015 - 0.018 - 0.022 0.023
1MHz 0.031 0.031 0.018 0.034 0.013 0.032 0.034
1GHz 0.005 0.005 0.006 0.005 0.004 0.005 0.005
10GHz IEC 62810 0.005 0.005 0.012 0.006 0.005 0.006 0.005
Measurement items Test method E6007LHF E6807LHF SR1009 E6205L SR1205L E6808LHF E6808UHF
Dielectric constant 1kHz IEC 60250 - 4.3 - - - - -
1MHz 3.8 3.8 4.0 3.0 2.8 3.8 3.8
1GHz 3.8 3.5 4.0 2.9 2.8 3.6 3.5
10GHz IEC 62810 3.6 - 4.0 2.8 2.7 3.7 3.6
Dielectric tangent 1kHz IEC 60250 - 0.020 - - - - -
1MHz 0.026 0.030 0.008 0.024 0.007 0.038 0.033
1GHz 0.005 0.004 0.003 0.005 0.002 0.004 0.004
10GHz IEC 62810 0.005 - 0.005 0.005 0.003 0.005 0.004
Measurement items Test method SV6808THF SV6808GHF SR2506 SR2507 SZ6505HF SZ6506HF
Dielectric constant 1kHz IEC 60250 - - - - - -
1MHz 3.8 3.8 3.6 3.7 3.8 3.5
1GHz 3.5 3.5 3.5 3.5 3.4 3.5
10GHz IEC 62810 3.7 3.7 3.6 3.7 3.5 3.6
Dielectric tangent 1kHz IEC 60250 - - - - - -
1MHz 0.012 0.029 0.029 0.029 0.023 0.011
1GHz 0.004 0.004 0.004 0.004 0.004 0.005
10GHz IEC 62810 0.004 0.005 0.003 0.003 0.004 0.003