Interconnection


New compression coax board-to-board RF connector series can save time and cost

2 November 2005 Interconnection

Tyco Electronics has introduced a new low profile, single connector, micro-miniature RF interconnect to meet the growing demand for direct board-to-board connections.

Traditionally, board-to-board RF connections have been achieved by using either two cable connectors or perhaps two board connectors with a third, spacer or bullet, between. Both of these options can add significant cost and assembly time. Tyco's new Compression Coax Board-to-Board Blindmate product eliminates the need for these multiple connectors - and their added cost - by offering a single connector assembly with spring-loaded contact.

One side of the connector is soldered on the base circuit board surface and the other side mates directly on the opposite target board using applied spring pressure. This 'one piece' design offers an easy connection with large radial and axial misalignment, and eliminates the risk of breaking soldered connections when mating or un-mating.

This product is initially available in three different lengths for board spacing of 6,65 mm, 10 mm and 14 mm, and is supplied in trays for pick-and-place. The connector has an operating temperature range of -40 to +125°C, impedance of 50 Ω, and can operate effectively at frequencies up to 6 GHz.

Return loss is specified as a minimum -20 dB at up to 2,2 GHz. Tolerance against axial misalignments from the nominal board stacking height is specified as ±1,0 mm (for the 10 and 14 mm versions), and ±0,4 mm (for 6,65 mm version). Tolerance against radial misalignment is ±0,8 mm from centreline, in any direction, for all three versions.

The target pads, typically contacting a gold-plated PCB target, can be tin-plated, or a gold-plated disc can be applied to the mating PCB for improved characteristics. Additional sizes can be developed to customer request.

For more information contact Quentin van den Bergh, Arrow Altech Distribution, +27 (0)11 923 9600, qvandenbergh@arrow.altech.co.za



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