Title :
Determination of the frequency-dependent complex permeability of Alloy 42
Author_Institution :
Motorola Inc., Austin, TX, USA
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;
Conference_Titel :
Electronic Components and Technology Conference, 1994. Proceedings., 44th
Conference_Location :
Washington, DC
Print_ISBN :
0-7803-0914-6
DOI :
10.1109/ECTC.1994.367510
