Determination of the frequency-dependent complex permeability of Alloy 42

Author

Young, Brian

Author_Institution

Motorola Inc., Austin, TX, USA

fYear

1994

fDate

1-4 May 1994

Firstpage

978

Lastpage

980

Abstract

A two-step technique is applied to an Alloy 42 lead frame to measure the resistance and inductance of the section of leads external to the package body that are parallel. The parallel leads form a transmission line that is analyzed with a 2D electromagnetic simulator to obtain the frequency-dependent complex permeability of the lead frame material. An approximate formula for the lead resistance and inductance is developed that shows good accuracy and is useful for convergence acceleration in solving the reverse problem and for approximate lead frame analysis

Keywords

iron alloys; magnetic permeability; nickel alloys; packaging; transmission line theory; 2D electromagnetic simulator; Alloy 42; Ni-Fe; approximate leadframe analysis; convergence acceleration; frequency-dependent complex permeability; inductance; lead frame; parallel leads; resistance; transmission line; two-step technique; Electrical resistance measurement; Electromagnetic analysis; Electromagnetic measurements; Frequency; Immune system; Inductance measurement; Lead; Packaging; Permeability; Transmission line measurements;

fLanguage

English

Publisher

ieee

Conference_Titel

Electronic Components and Technology Conference, 1994. Proceedings., 44th

Conference_Location

Washington, DC

Print_ISBN

0-7803-0914-6

Type

conf

DOI

10.1109/ECTC.1994.367510

Filename

367510