Spring fingers

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13 June 2012 Interconnection

As the demand for electronic devices continues to increase, so does the need for internal connections within these devices.

In response to this growing trend, TE Connectivity offers scalable spring fingers as well as a complete family of spring fingers to serve this surging need across all industries.

TE’s scalable spring fingers are available in heights from 1,8 mm to 3,4 mm. All these types can be mounted onto one single footprint, enabling the customer to swap the product easily when a design change is required. Another important feature of the scalable spring fingers is their preload function which nearly doubles the working area of a common spring finger and increases contact force by 0,2 N.

The product also has a dimple on the contact, which helps enhance reliability. The backward-bended tip prevents the product from hooking by removing the sharp edge. On the back of the scalable spring finger, there is a pick-and-place area that supports automatic assembly processes. The holes at the bottom of the product increase soldering strength while reducing solder wicking issues.

Besides scalable spring fingers, TE offers a product family of spring fingers in a range of styles and sizes. Currently, four styles are available. Their effective heights range from 0,3 mm to 6,5 mm with widths ranging from 0,8 mm to 2,5 mm. They all require very limited space on a printed circuit board and accommodate soldering as well as pick and place using standard equipment.

The spring fingers can be used for grounding between a device and a PCB; they provide shielding against vibration from motors, antennas, speakers and microphones; and they can be used as signal connecters to transfer data as well as a connection for stacking applications between primary and secondary PCBs.

For more information contact TE Connectivity, +27 (0)41 503 4500, [email protected], www.te.com

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