Packaging and Cooling

Board-to-Board Connectors with 4mm Stacking Height for Automotive Electronics

Kyocera Corporation announced its new 5655 series electronic board-to-board connectors optimized for high-speed data transmission, featuring a 0.5mm-pitch and a stacking height of just at 4mm — among the world’s thinnest for this class of connector. Samples are now available globally upon request.

In recent years, the development of advanced driver assistance systems (ADAS) and deployment of connected vehicles has greatly expanded the scope of automotive electronics. In several major markets, including the U.S., Europe, and Japan, tests of self-driving vehicles are currently taking place on public roads.

In California alone, more than 60 companies hold permits to test self-driving vehicles with a backup driver. The commercialization of these autonomous driving systems will require highly miniaturized automotive electronics to be mounted on limited available space within the vehicle.

Kyocera’s new 5655 Series connectors feature a stacking height of just 4mm, and a proprietary floating structure optimized for high-speed data transmission. The connectors are also available in larger dimensions to serve a wide range of design requirements.

The connectors’ dual-point contact structure ensures excellent contact reliability. Furthermore, the connectors’ mold structure reduces breakage when connecting or disconnecting to ensure superior durability. The new 5655 series is designed for use in advanced equipment including millimeter-wave radar and LiDAR to detect vehicles and pedestrians; e-mirrors; navigation systems; and driver monitoring cameras. The connectors can operate in extreme temperatures from -40°C to +125°C, and they comply with the MIPI D-PHY standard (2.5Gbps) for high-speed transmission interfaces.

Main Features:

  1. Among the world’s lowest stacking heights – 4mm – helps to downsize automotive electronics

With a stacking height of just 4mm in a 0.5mm-pitch, the floating-structure connector contributes to the miniaturization of automotive electronics. In addition to the 4mm-profile type, other versions up to 7mm are also available to meet wide-ranging customer requirements.

  1. Excellent contact reliability and durability

The terminals feature a dual-point contact structure, which pinches the board to ensure excellent contact reliability amid the typical shock levels within a vehicle. In addition, the connectors’ mold structure reduces breakage during connection and disconnection to ensure high durability.

  1. Complies with MIPI D-PHY (2.5Gbps) standard 

The 5655 Series complies with the MIPI D-PHY high-speed data transmission standard (2.5Gbps).

  1. High-current version also available

In addition to the 0.7A/pin rated current, Kyocera also offers versions rated up to 3A/pin for high-current power.

  1. Fully resistant to automotive temperature extremes

The 5655 Series is capable of operating at temperatures ranging from -40°C to 125°C, suited for all forms of advanced automotive electronics.

  1. Complies with IATF 16949 standards

The new connectors are manufactured at a factory with IATF 16949 certification, specifying conformance to the Quality Management System (QMS) requirements for automotive production.

  1. RoHS compliant

Specifications (click on table to enlarge)

Kyocera Corp.
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