Standard approximation
Microstrip impedance estimator
Estimate outer-layer single-ended microstrip impedance from trace width, dielectric height, and relative permittivity.
Engine category
PCB and Transmission Lines
Published tools in this category solve distinct design decisions. Each keeps its assumptions, limits, and next decision visible.
Heuristic screening
Return-path discontinuity checker
Screen a PCB signal path for reference changes, gaps, available stitching, and fast-edge return-path risks.
Exact ideal relationship
PCB trace resistance and voltage drop
Calculate DC trace resistance, voltage drop, and I squared R loss from copper trace geometry and current.
Standard approximation
PCB trace current and temperature-rise screening
Interpolate conductor temperature rise between two entered reference points from an authoritative trace-current dataset.
Standard approximation
Stripline impedance estimator
Estimate symmetric stripline single-ended impedance from plane distances, trace width, thickness, and dielectric constant.
Standard approximation
Differential microstrip impedance
Estimate differential microstrip impedance from single-ended impedance and the spacing-to-height ratio.
Standard approximation
Differential stripline impedance
Estimate embedded differential stripline pair impedance from single-ended impedance and the spacing-to-height ratio.
Exact ideal relationship
Differential-pair skew planner
Convert a routing timing-skew budget into an allowable length mismatch using one propagation-delay value.
Standard approximation
PCB via resistance and drop
Estimate plated via barrel DC resistance from finished hole diameter, plating thickness, and via length.
Standard approximation
PCB via inductance estimator
Estimate via loop inductance from via length, radius, and distance to the modeled return path.
Exact ideal relationship
Power-plane capacitance
Calculate ideal parallel-plate capacitance for a power-ground plane pair from area, separation, and dielectric constant.
Exact ideal relationship
PDN target-impedance planner
Calculate a flat power-distribution-network target impedance from allowed voltage ripple and a load current step.
Exact ideal relationship
Decoupling loop-inductance impact
Calculate the inductive transient voltage term from connection loop inductance and current slew rate.
Standard approximation
PCB crosstalk estimator
Estimate a relative near/far-end coupling index from trace spacing and parallel-run length.
Standard approximation
Source-termination designer
Calculate a first-pass series source-termination resistor from line impedance and driver output resistance.
Exact ideal relationship
Parallel and Thevenin termination designer
Calculate the ideal load reflection coefficient and driver DC current for a shunt end termination.
Exact ideal relationship
Stub resonance and length limit
Calculate stub one-way delay and quarter-wave resonant frequency from propagation velocity and stub length.
Standard approximation
Controlled-impedance tolerance explorer
Estimate a controlled-impedance trace's minimum and maximum value from entered per-parameter manufacturing tolerance sensitivities.
Exact ideal relationship
Annular-ring and drill tolerance checker
Calculate nominal and minimum annular ring from pad diameter, finished hole diameter, and registration allowance.
Exact ideal relationship
Solder-mask sliver and expansion planner
Calculate the remaining solder-mask web between two facing pads after entered mask expansion on each side.
Standard approximation
PCB thermal-via planner
Estimate ideal parallel thermal conductance of a plated thermal-via array from geometry and copper thermal conductivity.
Exact ideal relationship
Connector and contact voltage-drop budget
Calculate voltage drop and power dissipation for one entered total connector and contact path resistance.