Dielectric Strength Calculator

Calculate breakdown voltage, creepage distance, and clearance requirements for insulation design.

Thickness of dielectric material.
mm
Material breakdown field (air=3, FR4=20, Kapton=300 kV/mm).
kV/mm
Maximum working voltage.
V
Design safety factor.

Results

Breakdown Voltage-kV
Min Required Thickness-mm
Safety Margin-×
References: IEC 60243; UL 840; IEEE Std 4