Estimating the capacitance of wires in your DUT - an online calculator

Use this calculator to estimate the capacitance from one wire to all other wires in your cable. This calculator takes into account your fixturing length, cable length, and the presence of shields and will return an estimate of the capacitance a test will see from one wire to all other wires in the cable under test.

Step 1) Estimate the Capacitance
Units of Measure All lengths in
Your Fixturing Estimated capacitance of fixture wiring is ___ pF/Foot (wire to wire capacitance).
Total length of fixturing connected to target wire   Feet (usually 2x the fixturing length between the DUT and tester)
Estimated Capacitance of Fixturing: ___ pF
Your Device Under Test Target wire is
Other wires in cable/bundle
Estimated capacitance is ___ pF/Foot (target wire to all other wires).
Total length of wire   Feet
Estimated capacitance of this wire net: ___ nF
Estimate of Total Capacitance __________
Estimated combined fixture and DUT capacitance:__ nF
Step 2) Estimate Hipot Safety
Hipot Safety Information

DC Hipot Information

For testers that limit hipot energy and charge the highest DC voltage that might be intrinsically safe is ___ Volts.

AC Hipot Information

AC hipot frequency

Total AC Current
Test Voltage mA AC RMS mA Peak Intrinsically Safe?
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