Abstract: A variable resistor useful for automotive type fuel senders has a cermet film fired upon a refractory substrate. The cermet film is burnished to reduce asperity of the fired film. The resulting resistor element works with existing mechanical float type senders to provide a reliable and long lasting sender.
Type:
Grant
Filed:
November 10, 1997
Date of Patent:
November 7, 2000
Assignee:
CTS Corporation
Inventors:
Ronald J. Dedert, Ronald D. Brewster, LaVern J. Grube, Sherlie M. Walters
Abstract: A ball grid array capacitor has a substrate with a top and bottom surface and a via extending through the substrate. Several capacitors are located on the bottom surface. The capacitors include a top electrode connected to the via, a dielectric layer connected to the top electrode, and a bottom electrode that is connected to the dielectric layer and a ball pad over the bottom electrode. A passivation layer is located between the capacitors. Several solder spheres are electrically and mechanically connected to the bottom electrode. A resistor can be mounted on the top surface and connected to the via to form a filter.
Type:
Grant
Filed:
November 10, 1998
Date of Patent:
December 21, 1999
Assignee:
CTS Corporation
Inventors:
Terry R. Bloom, Richard O. Cooper, Robert L. Reinhard