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Accepting the Advanced and MicroTCA connection challenge Now available from are the world-beating AMC connectors from ept, which include the AdvancedTCA AMC B+, Female Backplane and Male connectors; and the MicroTCA, Power Backplane, and Power Module Output connectors. With AdvancedTCA and MicroTCA (i.e. signal connectors having 170 contacts on a pitch of 0.75mm), the specification ATCA 3.0 demands very tight tolerances for the mating PCB tracks. This impacts upon costeffective PCB production, and makes the choice of suitable connectors of critical importance. AdvancedTCA and MicroTCA connectors have been jointly developed by epc and Harting, and exhibit identical mechanical and electrical features. The user may therefore opt for either source, while profiting from the core competence of both companies. Harting and epc have now launched con:card+, a quality seal which identifies an improved generation of connectors and a dramatic reduction in time-to-market. The five principal advantages of con:card+ include the patented ‘GuideSpring’ for unparalelled positional reliability; an ultra-smooth contact surface to protect the gold-plated PCB pads; wear-resistant contact plating for protection against rough board surfaces; a special contact material, which maintains high contact force throughout its lifetime; and ept's gas-tight, corrosion-resistant, low resistance press-fit connection. MicroTCA defines systems that accommodate plug-in cards complying with the established Advanced Mezzanine Card (AMC) specification. (This has been developed by the PCIMG, a consortium of over 450 companies who collaboratively develop open specifications for high performance telecomm and industrial computing applications.) It brings the robustness and reliability of the AdvancedTCA to market segments in which a small footprint is required. |
New power connectors for MicroTCA systems
The MicroTCA specification describes the power module, which is connected at the rear with the bus board by a new power connector. It includes two ‘footprints’, one of which is protected by a Tyco patent while the other, in which ept played an important development role, is not protected by patent and is therefore freely available. This MicroTCA Power Connector is a combination of the familiar hm2.0-8 connector with 72 signal contacts, and a UPM power component which is now of two-row pattern with 24 power contacts, a combination permitting a load of up to 12A per pin. It incorporates the reliable ept Tcom press-fit technologies and, since an open standard is used, other companies are able to enter the market as a second source of supply.
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