Use this semiconductor calculation for first-order device, material, fabrication, interconnect, packaging, or reliability estimates when every coefficient and unit convention is known.

Dielectric constant

Optional number.

Dielectric thickness (µm)

Required number in µm.

Line length (µm)

Required number in µm.

Line width (µm)

Required number in µm.

The cited overview of Integrated circuit packaging supplies background for the terminology and domain context used by this tool.^[1]

Estimate the parallel-plate capacitance of an interposer routing line from its width, length, dielectric thickness, and dielectric constant. Inputs are interpreted exactly in the displayed units and the calculation returns the following fields without presentation rounding.

Capacitance (fF)

Returned number in fF.

• Material composition, geometry, process history, temperature, electric field, bias, interfaces, parasitics, and fitted parameter ranges can invalidate a compact semiconductor model.
• Dielectric constant must be at least 1.
• Dielectric thickness must be at least 5e-324.
• Line length must be at least 5e-324.
• Line width must be at least 5e-324.
• Use finite inputs in the displayed units, preserve source measurements and assumptions, and independently verify consequential decisions.

Compare the estimate with measured process data, current device documentation, and a higher-fidelity circuit, field, thermal, quantum, or TCAD model when the decision requires it.

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