Connectors achieve 25Gbps data rates

24th January 2014

Staff Reporter

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Data rates of more than 25Gbps are now possible the MicroSpeed family of connectors from ERNI Electronics. Previously permitting data rates of up to 20 Gbps (differentially), current measurements and simulations now prove that, with corresponding design criteria and layout (-2dB insertion loss, 5 mm board-to-board spacing), 25Gbps data rates can now be achieved.

Achieving 25 Gbps data rates in turn allows fast board-to-board connections with distances of 5 to 20 mm to be realized. Featuring 1.0 mm pitch, the modular, shielded connectors are available as a two-row version with 50 pins for the temperature range from -55 °C to +125 °C. Further to this, right-angle variants in the two-row design, robust blind-mate versions and seven-row versions with 91 and 133 pins respectively are also available.

Feturing SMT termination, the single contacts have two options available for the shield contacts - namely, SMT or through hole reflow (THR) for particularly heavy plug-in boards or high mechanical loading. he SMT coplanarity is fully guaranteed and specified with less than 0.10 mm for all the contacts. The longitudinal pitch of 1.0 mm and the row spacing of 1.5 mm permit horizontal and vertical arrangements of the differential pairs or single-ended signals - depending on the application and/or requirement with regard to crosstalk. Optimum crosstalk behavior can be achieved by means of special layout configurations – with ERNI providing support here in the form of field-tested suggestions. Mating cycles of > 500 are specified for the MicroSpeed connectors, whilst the current carrying capacity is 1.0 A for the signal contacts and 6.8 A for the contacts of the special power modules. Corresponding test data are available upon request.

Design features for full automatic assembly include black insulators from high-temperature-resistant LCP for rapid and reliable visual detection, in addition to a pre-mounted pick and place pad to facilitate gripping. Demo boards, SPICE models and an evaluation kit are all available for the connectors.