The concepts of inductance and partial inductance play a key role in printed circuit board (PCB) modeling. The inductance of the signal path is an important parameter in high-speed signal integrity calculations. Delta_I noise modeling, crosstalk calculations, and common-mode source identification all rely heavily on accurate estimations of the partial inductance associated with traces, vias, and signal return paths on printed circuit boards. The paper begins by identifying and quantifying the parameters that affect the inductance of typical PCB geometries. Closed-form equations are provided for estimating the partial inductances of simple trace, via, and ground plane configurations. Finally, the issue of current crowding around via connections in planes and its affect on the partial inductance of the plane is addressed.

Meeting Name

IEEE International Symposium on Electromagnetic Compatibility (1994: Aug. 22-26, Chicago, IL)


Electrical and Computer Engineering

Keywords and Phrases

PCB Modeling; Closed-Form Equations; Common-Mode Source Identification; Crosstalk; Crosstalk Calculations; Crowding; Delta I Noise Modeling; Electromagnetic Compatibility; Ground Plane; High-Speed Signal Integrity Calculations; Inductance; Partial Inductance; Printed Circuit Board Inductance; Printed Circuits; Signal Path; Signal Return Paths; Traces; Vias

International Standard Book Number (ISBN)


International Standard Serial Number (ISSN)


Document Type

Article - Conference proceedings

Document Version

Final Version

File Type





© 1994 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.

Publication Date

01 Aug 1994