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eng.dielectric-loss-tangent Calculator
Calculates dielectric loss tangent, power dissipation factor, and thermal runaway risk for capacitor dielectrics at operating voltage and frequency. High dielectric loss causes heating in capacitors and transmission line insulation — loss tangent must be below 0.001 for most RF applications.
Inputs
Permittivity Real
Reference formula or conversion factor shown for context.
Loss Tangent
Reference formula or conversion factor shown for context.
Frequency Ghz
Cycles per second (Hz). Audible sound: 20 Hz – 20 kHz. Make sure units match what the formula expects.
Thickness Mm
Perpendicular measurement through the material. For insulation: thicker is better. For beams: directly affects bending resistance.
Results
dielectric loss (dB/m)
The decrease or degradation from the baseline.
effective permittivity
Reference formula or conversion factor shown for context.
guided wavelength (mm)
The computed linear length.
tan δ
Sample size or count used in the calculation.
FR4 typical
Reference formula or conversion factor shown for context.
Rogers 4003C
Reference formula or conversion factor shown for context.