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XFP connector module complies with 10GbE protocols

Posted: 08 Dec 2006     Print Version  Bookmark and Share

Keywords:Pulse  Technitrol  XFP module  10GbE  XFP001/2/3-L 

Pulse, a Technitrol company, has introduced a line of 10Gbit small form-factor pluggable (XFP) modules for use with 10Gbit hot-pluggable optical transceiver modules. These XFP modules also provide enhanced EMI protection.

The cage and connector comply with the Multisource Agreement 3.0 (MSA 3.0) standard and support OC192/STM-64, 10Gbit Fibre Channel, G.709, and 10GbE protocols in applications such as blade servers, routers, add-drop multiplexers and in remote base stations and central office equipment.

The XFP001/2/3-L series cages support three different heat sink profiles. The company can customise the heat sink profile in-house, which will allow designers to configure their PCB architecture to maximise the heat dissipation of the heat sink.

Cage dimensions
The standard 1x1 cage measures 21.7-by-65.3-by-13.2mm, and comes with a clip and heat sink. The heat sinks are offered in three interchangeable height profiles—13.5mm (XFP001-L), 6.5mm (XFP002-L) and 4.2mm (XFP003-L). The easily installed external clip attaches to the top of the heat sink and the cage, maintaining a solid mechanical contact between the optical transceiver and heat sink. This design ensures minimal thermal resistance and maximum heat dissipation properties without degrading EMI performance, said the company. The cage, constructed of nickel-plated copper alloy to prevent oxidation, is uniquely constructed so it doesn't deform during press fitting.

The XFP001/2/3-L has an insulating barrier underneath the main body of the cage to prevent PCB signal traces from shorting to the underside of the cage. To enhance EMI performance, a conductive gasket is located at the back of the cage to improve the electrical conductivity between the cage and the optical transceiver. A series of EMI ground contact points are placed around the opening of the cage to prevent noise escaping through the front aspect of the cage gap between the optical transceiver and the cage wall.

Maximum EMI protection
In addition, a series of flexible metal contacts are used to ground the cage to the PCB, thus surrounding the connector with an effective Faraday cage to provide maximum EMI protection, said the company. A gasket is placed between the rear surface of the cage and the PCB to further seal the cage and PCB together.

The XFP001/2/3-L can handle optical transceiver links as well as transceivers configured to operate as traditional copper RJ45 connectors, so the series can be configured to each company's internal networking requirements for balancing load and bandwidth.

The cage/connector package has been tested to 750 cycles minimum. The connector's surface-mount pins support 0.004 inch co-planarity between pins. Contacts are selectively plated to 30µm gold. The system is RoHS compliant.

The price for the XFP001/2/3-L cage, clip and heat sink unit is Rs.1,138 ($25), Rs.1,183.52 ($26) or Rs.1,229.04 ($27), depending on order configuration and shipping destination, in quantities of 1,000. Delivery is six weeks.

The price for the XFP connector E81N0-YCUDF4-L is Rs.227.60 ($5). This connector is compatible with all cages. The cage, clip and heat sink can be purchased assembled with the connector, providing a tested system that is board-ready and can be connected to the transceiver.

- Gina Roos

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