U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Electronic surface mount package

Patent 6344785 Issued on February 5, 2002. Estimated Expiration Date: Icon_subject August 6, 2017. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

3721747

Encased transformer Patent #: 5034854
Issued on: 07/23/1991
Inventor: Matsumura, et al.

Inventors

Assignee

Application

No. 906952 filed on 08/06/1997

US Classes:

336/96, Potted type336/90, WITH OUTER CASING OR HOUSING336/192WINDING WITH TERMINALS, TAPS, OR COIL CONDUCTOR END ANCHORING MEANS

Examiners

Primary: Mai, Anh

Attorney, Agent or Firm

Foreign Patent References

  • 0 490 438 EP 06/24/1992

International Class

H01F 027/02

Abstract

An electronic surface mount package provides a one piece construction package (with an open bottom) with one or more terminal pins molded into the package. Each of the pins have a notched post upon which a wire is wound which is from a toroid transformer carried within the package. Each of the posts are notched so their respective wires are separate from one another so as to prevent arcing. The case is opened at the bottom which prevents harm from expansion or cracking.

Other References

  • McCormick; Surface Mount Transformers: A New Packaging Approach; Surface Mount Technology; Feb. 1993; pp. 27-31
  • Wyns et al.; PSPICE Simulations and 3D-PCB Transformers for ZVS Full Bridge Converters; The European Power Electronics Association; 1993; pp. 208-214
  • EPE'93 Fifth European Conference; Power Electronics and Applications; vol. 3: Electronic Power Supply System; Sep. 13-16, 1993; pp. 215
  • Davis; SMT Passive Components Fit Power Electronics Applications; PCIM; Jun. 1993; vol. 19; No. 6; pp. 20-28 and 90
  • Osawa; A Superminiaturized Double-Balanced SMT Mixer-Modulator; Microwave Journal; Feb. 1994; pp. 90-97
  • Lyons et al.; Printed Circuit Board Magnetics: A New Approach to the Mass Production of Toroidal Transformers; ISHM '95 Proceedings; pp. 53-58
  • Derebail et al.; Knowledge Based Adhesive Selection for SMT Assemblies; Proceedings 1995 International Symposium on Microelectronics; Oct. 24-26, 1995; vol. 2649; pp. 1024-103
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