Electronic surface mount package

• US 6,297,720 B1
• Filed: 12/27/1996
• Issued: 10/02/2001
• Est. Priority Date: 08/10/1995
• Status: Expired due to Term

• Current Assignee: Halo Electronics Incorporated
• Original Assignee: Halo Electronics Incorporated
• Inventors: Lu, Peter, Heaton, James W., Lam, Robert Loke Hang, Sun, Tsang Kei, Heaton, Jeffrey, Pao, Peter Loh Hang
• Primary Examiner(s): MAI, ANH T
• Application Number:
  US08/773,555
• Time in Patent Office: 1,740 Days
• Field of Search: 336/229, 336/192, 336/65, 336/90, 336/96, 174/52.4, 361/821
• US Class Current: 336/96
• CPC Class Codes: H01F 17/062 Toroidal core with turns of coil around it
• CPC Class Codes: H01F 27/027 specially adapted for combination of signal type inductors or transformers with electronic circuits, e.g. mounting on printed circuit boards
• CPC Class Codes: H01F 27/292 Surface mounted devices
• CPC Class Codes: H01F 41/005 Impregnating or encapsulating insulating of windings H01F41/12
• CPC Class Codes: H01F 41/10 Connecting leads to windings making electric connections in general H01R43/00
• CPC Class Codes: H01R 13/6633 with inductive component, e.g. transformer
• CPC Class Codes: H01R 13/7193 with ferrite filters
• CPC Class Codes: H05K 3/301 by means of a mounting structure H05K3/325 takes precedence
• CPC Class Codes: H05K 3/3421 Leaded components

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. A reinforcement beam is located laterally across the bottom of the package to provide mechanical strength for the case.

Claims

1. An electronic surface mount package for mounting onto the surface of a printed circuit board in an electronic device, said package comprising:

a one piece open construction package having a side wall,

a plurality of toroid transformers within said package, said toroid transformers each having wires wound thereon,

a plurality of terminal pins molded within the side wall of said package, the ends of the terminal pins forming solder posts and extending through and below the bottom of said side wall,

said solder posts each having an hour-glass shaped notch upon which said wires from said transformers are wrapped and soldered thereon, respectively,

the other end of each of the terminal pins extending in gull wing fashion outwardly from the side wall and below the bottom of the package for mounting onto the surface of the printed circuit board.

2. An electronic surface mount package for mounting onto the surface of a printed circuit board comprising:

a one piece open construction package having a side wall,

a plurality of toroid transformers within said package in a soft silicone material, said toroid transformers each having wires wound thereon,

a plurality of terminal pins molded within the side wall of said package, the ends of the terminal pins forming solder posts extending through and below the bottom of said side wall, said solder posts each having a notched post upon which said wires from said transformers are wrapped and soldered thereon, respectively,

the other end of each of the terminal pins extending outwardly from the side wall and below the bottom of the package for mounting onto the surface of the printed circuit board.

3. An electronic surface mount package for mounting onto the surface of a printed circuit board comprising:

a construction package having a side wall and an open bottom,

a plurality of toroid transformers within said package in a soft silicone material, said toroid transformers each having wires wound thereon,

a plurality of terminal pins molded within the side wall of said package, the ends of the pins forming solder posts extending through and below the bottom of said side wall, said solder posts each having a notched post upon which said wires from said transformers are wrapped and soldered thereon, respectively.

4. An electronic surface mount package for mounting onto the surface of a printed circuit board in an electronic device, said electronic surface mount package comprising:

a one piece open construction package having a side wall,

a plurality of toroid transformers within said package in a soft silicone material, said toroid transformers each having wires wound thereon,

a plurality of terminal pins molded within the side wall of said package, the ends molded pins forming solder posts extending through and below the bottom of said side wall, said solder posts each having a notched post upon which said wires from said transformers are wrapped and soldered thereon, respectively.

5. The package as in claim 4 further including a standoff for maintaining a distance between the bottom of said pins and said printed circuit board.

6. An electronic surface mount package for mounting onto the surface of a printed circuit board comprising:

an open construction package having a side wall,

at least one toroid transformer within said package in a soft silicone material, said toroid transformer having a wire wound thereon,

at least one terminal pin molded within the side wall of said package, said one end forming a solder post extending through and below the bottom of said side wall said solder post having a notched post upon which said wire from said transformer is wrapped and soldered thereon.

7. The package as in claim 6 wherein the package includes an end wall to form a safe guard and wherein said one end of said terminal pin extends below the bottom of the side wall but does not extend below the safe guard.

8. The package as in claim 7 wherein the terminal pin has another end which extends in wing like fashion through the other side of the side wall below the bottom of the package to form a surface mounting portion for mounting on the surface of the printed circuit board.