Patent ID: 8539430

Claim:
A computer-implemented method for detecting equivalent series inductance (ESL) of an electrical component of a printed circuit board (PCB) using an electronic device, the method comprising: selecting an electrical component from a layout diagram of the PCB stored in a storage device of the electronic device, and selecting a plurality of signal lines connected with the selected electrical component; selecting a standard range of the ESL of the selected electrical component using an input device of the electronic device; calculating an ESL value between each of the selected signal lines and a via hole corresponding to the selected signal line using a formula of L=e×h×[ln(4h/d)+1], wherein “e” represents a preset value, “h” represents a length of the via hole, “d” represents a diameter of the via hole, “ln( )” represents a natural logarithm, and “L” represents the calculated ESL value; determining one or more signal lines whose ESL values are not within the standard range from the selected signal lines; locating attribute data of the determined signal lines and the selected electrical component in the layout diagram of the PCB; and displaying the attribute data of the determined signal lines and the selected electrical component on a display device of the electronic device.