11-03-2021 | Snaptron | Connectors, Switches & EMECH
Snaptron has released a new feature to their DT-Series, also known as dual-touch tactile domes. The DT dome is similar to a standard four-legged metal dome, except one foot is shorter. The new feature, called 'Continuous Dual-Touch', maintains two separate electrical contacts through two actuations in a single dome switch.
The device can detect two different force levels or actuation positions. The first position offers no tactile sensation but makes electrical contact. While the second position creates a second electrical contact giving the tactile feedback synonymous with conventional domes switches.
Two dimples located on the short foot assure that the dome maintains electrical contact through both actuations. The domes are beneficial when the first actuation performs a critical part in the switch's full function; the second actuation is conditional on the first maintaining contact; or if both electrical contacts detect the state of a system.
"We are seeing designs getting smaller and more sophisticated," said Ashley Steinbach, director of Strategic Development. "This is requiring engineers to do more with limited space, presenting the need for multi-functional components like the DTSD dome."
DTSD domes are supplied as standard in 6mm, 7mm, 8.5mm, 10mm, and 12mm with forces ranging from 180g to 340g, depending on diameter and life cycle ratings up to 5,000,000 cycles. All standard DTSD domes are nickel-plated.
