Our round and double radius domes are essentially designed for applications where space and height are critical.
Nicomatic offers round & double radius domes that are available with or without micro dimple or multiple dimples. Given their geometry these domes are more robust to overload, overstroke & sweetspot tests. Their small diameter & shape make them ideal for consumer electronics applications, and every man/machine interface of small size (calculators, GPS systems, PC mouse, joysticks, automotive…).
The double radius version allows to save even more space vs. the round.
This is called sweet spot. It can vary depending on the dome size and criteria (click ratio -trip force). Main figures are:
N4 = 0.3-0.5mm
N5 = 0.5-08 mm
Good to know: the more the actuator is centred the best tactile and life expectancy you get.
Gold electrolytic is recommanded, but tin plated or screened silver ink can be used.