Electrical connector with inductance and contact module used in the electrical connector

• US 8,535,100 B2
• Filed: 12/21/2010
• Issued: 09/17/2013
• Est. Priority Date: 12/21/2009
• Status: Expired due to Fees

• Current Assignee: Hon Hai Precision Industry Co., Ltd.
• Original Assignee: Hon Hai Precision Industry Co., Ltd.
• Inventors: Shih, Yueh-Shan, Ge, Lin-Zhong
• Primary Examiner(s): Abrams, Neil
• Application Number:
  US12/975,332
• Publication Number:
  US 20110151717A1
• Time in Patent Office: 1,001 Days
• Field of Search: 439/620.06, 439/620.07, 439/620.11, 439/620.12, 439/620.17
• US Class Current: 439/620.17
• CPC Class Codes: H01R 13/6658 on printed circuit board H01R13/6666 - H01R13/6691 take precedence
• CPC Class Codes: H01R 13/7193 with ferrite filters
• CPC Class Codes: H01R 24/64 for high frequency, e.g. RJ 45

Abstract

An electrical connector (100) to be mounted on an exterior PCB (126) is disclosed. The electrical connector includes an insulating housing (120) having a front face defining a mating port (122) to receive a plug therein; a number of mating contacts (142) received in said insulating housing and extending into said mating port for mating with a plug inserted therein; a first internal PCB (144) having a front face on which said mating contacts are mounted; a second internal PCB (145) with a ferromagnetic core embedded therein and forming an inductance; a number of terminals (149) extending out to be mounted to said exterior PCB. A number of signal channels are formed between the mating contacts (142) and the terminals (149) with the inductance electrically connected therein.

Claims

1. A contact module for being used in a receptacle connector, comprising:

a plurality of mating contacts for mating with a plug that is inserted into the receptacle connector;

a first printed circuit board (PCB) having a front face on which said mating contacts are mounted, a rear face, and a common mode choke mounted on the rear face;

a second PCB being thicker than the first PCB and stacked behind the first PCB, the second PCB having an embedded transformer; and

a plurality of terminals;

wherein a signal channel is formed between the mating contacts and the terminals through the common mode choke and the transformer; and

wherein the first PCB is larger in size than the second PCB to have an additional area on which the common mode choke is mounted.

2. A PCB (printed circuit board) assembly for use with a modular jack, comprising:

a first PCB;

a second PCB stacked, in a front-to-back direction, behind the first PCB in a parallel relation;

a plurality of transformers embedded in the second PCB;

a first set of contacts located around a first region and extending through both said first and second PCBs; and

a second set of contacts located around a second region and extending through both said first and second PCBs;

wherein

the first PCB is larger than the second PCB with comparably a first additional area on which a footer structure is mounted for connecting the first PCB to a main PCB, and a second addition area on which chokes are mounted.

3. The PCB assembly as claimed in claim 2, wherein each of the first set of contacts forwardly extends to provide an oblique resilient contacting section for mating with a plug.

4. The PCB assembly as claimed in claim 2, wherein said transformers are located between the first set of contacts and the second set of contacts in a vertical direction perpendicular to said front-to-back direction.

5. The PCB assembly as claimed in claim 2, wherein said first area is located on a lower portion of the first PCB while said second area is located on an upper portion of the first PCB.

6. The PCB assembly as claimed in claim 2, wherein a third PCB is stacked, in said front-to-back direction, behind the second PCB under condition that both said first set of contacts and said second set of contacts extend through said third PCB.

7. The PCB assembly as claimed in claim 6, wherein said third PCB further includes transformers embedded therein.

8. An electrical connector to be mounted on an exterior printed circuit board (PCB), comprising:

an insulating housing having a front mating port for receiving a plug;

a plurality of mating contacts received in said insulating housing and extending into said mating port for mating with a plug inserted therein;

a front PCB having a front face on which said mating contacts are mounted;

a rear PCB stacked behind the front PCB; and

a plurality of terminals extending out to be mounted to said exterior PCB, wherein signal channels are formed between the mating contacts and the terminals, each of the signal channels having an embedded isolating transformer and a common mode choke connected therein, the common mode choke being surface mounted onto the front PCB;

wherein the front and the rear PCBs have a plurality of conductive holes receiving a plurality of conductive pins, each conductive pin having a front end connecting the front PCB and a rear end connecting the rear PCB;

wherein the front PCB is larger than the rear PCB to provide a lower area below the rear PCB receiving the terminals;

wherein the front PCB is larger than the rear PCB to provide an upper area above the rear PCB on which the common mode choke is mounted.

9. The electrical connector as claimed in claim 8, further comprising a third PCB, and wherein there are four signal channels, and each of the second and the third internal PCBs has two embedded transformers.