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

On resistance (Ω)

Required number in Ω. Low-resistance state resistance.

Off resistance (Ω)

Required number in Ω. High-resistance state resistance.

The cited overview of Resistive random-access memory supplies background for the terminology and domain context used by this tool.^[1]

Compute the memristor resistance ratio between the high-resistance off state and low-resistance on state. Inputs are interpreted exactly in the displayed units and the calculation returns the following fields without presentation rounding.

On-off ratio

Returned number. High-resistance off state divided by low-resistance on state.

• Material composition, geometry, process history, temperature, electric field, bias, interfaces, parasitics, and fitted parameter ranges can invalidate a compact semiconductor model.
• On resistance must be at least 5e-324.
• Off resistance 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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