Board to backplane electrical connector

Tyco Electronics has developed a new high-speed, differential, board to backplane electrical connector for the telecommunications and computer industries.

The Z-PACK HM-Zd product is an extension of IEC 61076-4-101 Hard Metric (HM) connector family, providing a differential solution for applications in the range of 3-5 gigabit/second.

The Z-PACK HM-Zd connector system is designed to meet the challenging electrical performance requirements required by next generation designs using low voltage differential signaling. The connector provides low cross-talk, low skew, improved trace routing, reliable dual beam contacts, 1.5 millimetre mating intervals and a rugged housing; all in a 100 ohm differential signalling environment.

The Z-PACK HM-Zd, connector easily integrates into existing backplane and subrack designs using the HardMetric, CompactPCI or Eurocard design standards. This connector shares with the Hard Metric connector such mechanical design features as: key layout dimensions, pin heights, sequential mating dimensions, plastic coding keys, and press-fit hole requirements.

Initially the Tyco Z-PACK HM-Zd connectors are being offered in a 25 millimetre module with 40 differential pairs in a four pair-eight row design (80 signals with 40 grounds), and 20 differential pairs in a two pair–four row design (40 signals with 20 grounds). Each 100-ohm differential is a transmission line with its own tightly coupled reference ground to control impedance and minimise connector noise.

Additionally, the ‘L’ shaped shield blades provide for rugged mating and greatly reduces the possibility of contact stubbing. These shields also stand more than a millimetre higher than the signal pin pairs. This mechanical arrangement will help protect the signal pins from damage during the handling of backplanes equipped with these connectors. The plastic housing has additional pre-alignment pins that help align the connectors prior to contact engagement. These plastic blades have been made sturdier to further reduce the possibility of pin stubbing.

Samples are available. In addition, electrical evaluation boards, mechanical CAD models, SPICE electrical models, insertion tooling and test reports are available.

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