High Speed Modular Jack With Flexible Compensation Circuit

• US 20070270042A1
• Filed: 05/15/2007
• Published: 11/22/2007
• Est. Priority Date: 05/17/2006
• Status: Active Grant

• Current Assignee: Bel Fuse Macau Commercial Offshore Limited (Bel Fuse)
• Original Assignee: Bel Fuse Limited (Bel Fuse)
• Inventors: Blankenship, David, Belopolsky, Yakov, Marowsky, Richard, Gutter, David
• Granted Patent: US 7,686,650 B2
• Time in Patent Office: Days
• US Class Current: 439/668
• CPC Class Codes: H01R 12/724 containing contact members forming a right angle
• CPC Class Codes: H01R 13/502 composed of different pieces H01R13/514 takes precedence
• CPC Class Codes: H01R 13/6466 on substrates, e.g. printed circuit boards [PCB]
• CPC Class Codes: H01R 13/6467 by cross-over of signal conductors
• CPC Class Codes: H01R 13/6581 Shield structure
• CPC Class Codes: H01R 13/6625 with capacitive component
• CPC Class Codes: H01R 13/6658 on printed circuit board H01R13/6666 - H01R13/6691 take precedence
• CPC Class Codes: H01R 24/64 for high frequency, e.g. RJ 45
• CPC Class Codes: H01R 27/00 Coupling parts adapted for co-operation with two or more dissimilar counterparts for dissimilar contact members H01R13/35; supported only by co-operation with a counterpart H01R31/00; with a holder adapted for supporting apparatus to which its counterpart is attached H01R33/90
• CPC Class Codes: Y10S 439/941 Crosstalk suppression

Abstract

A jack capable of handling both Category 6 and Category 7 speed communications. The jack includes a shield, a housing disposed in the shield and a contact block disposed in the housing. The contact block includes a base member and a plurality of contacts carried by the base member. Each contact includes a contact portion effective to touch a corresponding contact of a plug when the plug is inserted into the jack, a first end portion effective to be inserted into a circuit board, and a second end portion. A flexible substrate is connected to the second end portion, the substrate including a compensation circuit for the jack.

Claims

1. A jack comprising:

a housing;

a contact block in the housing, the contact block including a base member and a plurality of contacts carried by the base member, each contact including a contact portion effective to touch a corresponding contact of a plug when the plug is inserted into the jack, a first end portion effective to be attached to an electronic circuit, and a second end portion; and

a substrate connected to the second end portion, the substrate including a compensation circuit for the jack.

2. The jack as recited in claim 1, wherein the compensation circuit includes a plurality of capacitors.

3. The jack as recited in claim 2, wherein:

the contact block includes first, second, third, fourth, fifth, sixth, seventh and eighth contacts; and

the jack further comprises;

between the third and the fifth contact, a first capacitor with a value in a range from approximately 300 to 3600 fF;

between the fourth and the sixth contact, a second capacitor with a value in arrange from approximately 300 to 3600 fF;

between the first and the third contact, a third capacitor with a value in a range of approximately 0 to 2400 fF;

between the second and the sixth contact, a fourth capacitor with a value in a range of approximately 0 to 2100 fF;

between the third and the seventh contact, a fifth capacitor with a value in a range from approximately 0 to 2100 fF; and

between the sixth and the eighth contact, a sixth capacitor with a value in a range of approximately 0 to 2400 fF.

4. The jack as recited in claim 1, wherein at least two of the contacts cross-over inside the base member.

5. The jack as recited in claim 4, wherein the at least two contacts cross-over twice.

6. The jack as recited in claim 1, wherein at least two of the contacts cross-over outside the base member.

7. The jack as recited in claim 1, wherein the at least one contact bends outside the base member.

8. The jack as recited in claim 1, wherein the substrate is flexible.

9. The jack as recited in claim 8, wherein the substrate includes a plurality of spaced fingers, each finger being connected to a respective contact.

10. The jack as recited in claim 1, wherein:

the contact block includes a tongue; and

the housing includes a groove, the groove shaped so as to be able to receive the tongue of the contact block.

11. The jack as recited in claim 1, wherein the contact block further includes walls defining a cut-out portion in a central area of base member.

12. The jack as recited in claim 9, further comprising a rear cover including recesses positioned so as to mate with the at least one contact.

13. The jack as recited in claim 1, further comprising a shield;

and

wherein the housing is disposed in the shield.

14. The jack as recited in claim 1, wherein the contacts are all disposed on one side of the housing.

15. A jack comprising:

a housing;

at least one contact in the housing, each contact including a contact portion effective to touch a corresponding contact of a plug when the plug is inserted into the jack, a first end portion effective to be attached to an electronic circuit, and a second end portion;

a substrate connected to the second end portion, the substrate including a compensation circuit for the jack.

16. The jack as recited in claim 15, wherein the substrate is flexible.

17. The jack as recited in claim 16, wherein the substrate includes a plurality of spaced fingers, each finger being connected to a respective contact.

18. The jack as recited in claim 15, wherein:

the housing includes a base, a pass-through housing disposed on the base and a support cantilevered from the pass-through housing;

wherein

the at least one contact extends from the contact portion through the support, and through the pass-through housing; and

wherein the first end portion extends from the pass-through housing.

19. The jack as recited in claim 18, wherein the at least one contact is a first contact and the jack further comprises at least one second contact disposed on a side of the housing opposite the first contact.