Electronic surface mount package

• US 6,344,785 B1
• Filed: 08/06/1997
• Issued: 02/05/2002
• Est. Priority Date: 08/10/1995
• Status: Expired due to Term

• Current Assignee: Halo Electronics Incorporated
• Original Assignee: Halo Electronics Incorporated
• Inventors: Lam, Robert Loke Hang, Lu, Peter, Heaton, James W., Sun, Tsang Kei, Heaton, Jeffrey, Pao, Peter Loh Hang
• Primary Examiner(s): MAI, ANH T
• Application Number:
  US08/906,952
• Time in Patent Office: 1,644 Days
• Field of Search: 336/192, 336/229, 336/65, 336/96, 336/90, 174/52.4, 174/50, 361/821, 361/752
• 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 13/6461 Means for preventing cross-talk
• 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.

Claims

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

a side wall with a bottom end,

a plurality of toroid transformers within the package, the toroid transformers each having wires wrapped thereon,

a plurality of terminal pins molded within the side wall, each of the pins extending through the side wall and having a solder post with an end upon which the wires from the transformers are respectively wrapped and soldered thereon, each of the post ends extending beyond the bottom end of the side wall.

2. The package of claim 1 wherein the plurality of toroid transformers are carried within the package by a soft silicone material.

3. The package of claim 1 wherein the side wall has an exterior surface which defines the periphery of the package and each of the solder post ends extends from within the periphery of the package and beyond the bottom of the side wall.

4. The package of claim 1 wherein the side wall defines an interior space within the package and each of the post ends extends from the interior space and beyond the bottom of the side wall.

5. The package of claim 4 wherein each of the solder post ends extends from within the periphery in a direction parallel to the side wall.

6. The package of claim 1 wherein the construction package is one piece.

7. The package of claim 1 wherein each of the pins has a notch near the post end upon which the wires from the transformers are wrapped.

8. The package of claim 1 wherein the posts are separated from one another so as to avoid arcing.

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

a side wall and a standoff, the standoff defining a foot seating plane for the surface mount of the package, the side wall having a bottom end with an elevation higher than the standoff so as to be above and beyond the foot seating plane;

a plurality of toroid transformers within the package, the toroid transformers each having wires wrapped thereon,

a plurality of terminal pins molded within the package, each of the pins having a solder post with an end upon which the wires from the transformers are respectively wrapped and soldered thereon, the solder post ends extending beyond the bottom end of the side wall to a position above the foot seating plane.

10. The package of claim 9 wherein each of the pins has a notch near the post end upon which the wires from the transformers are wrapped.

11. The package of claim 9 wherein the construction package is one piece.

12. The package of claim 9 wherein the construction package has an open bottom.

13. The package of claim 9 wherein the posts are separated from one another so as to avoid arcing.

14. The package of claim 9 wherein the side wall defines an interior space within the package and each of the post ends extends from the interior space and beyond the bottom of the side wall.

15. The package of claim 14 wherein each of the post ends extends from within the periphery in a direction parallel to the side wall.

16. The package of claim 9 wherein the plurality of toroid transformers are within the package and secured by a soft silicone material.

17. The package of claim 9 wherein the standoff is a pair of end walls with the side wall extending on opposing sides therebetween.

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

a side wall having a bottom end;

a standoff for surface mounting the package to the circuit board;

a gap between the bottom end of the side wall and the standoff;

a plurality of toroid transformers within the package, the toroid transformers each having wire wrapped thereon,

a plurality of terminal pins molded within the package, each of the pins having a solder post with an end upon which the wires from the transformers are respectively wrapped and soldered thereon, each of the solder post ends extending into and terminating within the gap.

19. The package of claim 18 wherein the standoff is a pair of end walls with the side wall extending on opposing sides therebetween.

20. The package of claim 18 wherein the construction package is one piece.

21. The package of claim 18 wherein the construction package has an open bottom.

22. The package of claim 18 wherein the posts are separated from one another so as to avoid arcing.

23. The package of claim 18 wherein the side wall defines an interior space within the package and each of the post ends extends from the interior space and beyond the bottom of the side wall.

24. The package of claim 23 wherein each of the post ends extends from within the periphery in a direction parallel to the side wall.

25. The package of claim 18 wherein the plurality of toroid transformers are within the package and secured by a soft silicone material.

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

a one piece package having an open bottom and a side wall with a bottom end;

a plurality of toroid transformers each having wires wrapped thereon;

means for encapsulating the plurality of toroid transformers within the package;

a plurality of terminal pins molded within and extending from the bottom of the package, each of the pins extending through the side wall and having a solder post with an end upon which the wires from the transformers are respectively wrapped and soldered thereon.

27. The package of claim 26 wherein the standoff is a pair of end walls with the side wall extending on opposing sides therebetween.

28. The package of claim 26 wherein each of the post ends extends beyond the bottom end of the side wall.

29. The package of claim 26 wherein the carrying means includes encapsulating the plurality of toroid transformers within the package by a soft silicone material.

30. The package of claim 26 wherein the construction package is one piece.

31. The package of claim 26 wherein the posts are separated from one another so as to avoid arcing.

32. The package of claim 26 wherein the side wall defines an interior space within the package and each of the post ends extends from the interior space and beyond the bottom of the side wall.

33. The package of claim 32 wherein each of the post ends extends from within the periphery in a direction parallel to the side wall.

34. The package of claim 26 wherein the package includes a standoff defining a foot seating plane for the surface mount of the package, the side wall having a bottom end with an elevation higher than the standoff so as to be above and beyond the foot seating plane, the post ends extending beyond the bottom end of the side wall to a position above the foot seating plane.