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Product category: Switches and Keyboards
News Release from: Omron Electronics | Subject: B3DA
Edited by the Electronicstalk Editorial Team on 07 September 2001

Here's a switch - dome lasts more than a
year

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New from Omron is a metal dome array that attaches directly to a printed circuit board to create a tactile switch.

New from Omron is a metal dome array that attaches directly to a printed circuit board to create a tactile switch The B3DA uses stainless steel to make a 4 or 5mm diameter contact dome with a positive clicking action

The simple, strong construction is nevertheless very thin and light - just 0.25mm thick - making the dome array ideal for ultraslim applications such as mobile phones, remote controls, and miniature keypads.

Virtually any switch layout can be designed and produced to user specifications, with maximum cost-effectiveness coming from high-volume designs, typically 50,000 units/month or greater.

A 25-micron layer of dot matrix adhesive is used to attach the array to a PCB, featuring grid-shaped slits to provide good ventilation to the dome.

Slit height of just 15um ensures that the array is sealed from dust.

The Omron dome array operates over an extensive -40 to +80C temperature range and is rated for storage up to +85C.

Longevity is specified as a minimum of 500,000 operations.

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