Potato chip switches are miniature metal spring switches that are triggered by external pressure to cause elastic deformation, thereby completing and resetting the circuit. Their core characteristics are as follows:
Tactile feedback: Provides a clear “click” sensation (activation force: 50–500 gf).
Circuit control: Commonly used as a momentary switch on PCBs, with a contact resistance of ≤100 mΩ.
Miniaturization: Diameter: 1.5–12 mm; thickness: 0.1–0.3 mm, suitable for high-density integration.
The 4MM To 20MM Stainless Steel Metal Dome features an ultra-thin design, providing excellent tactile feedback and stable electrical performance specifications. A selection of spring sheet products with different specifications and sizes is available to facilitate the production of thinner components. This type of switch is manufactured using metal spring sheets through stamping. It can be securely mounted on thin film tape, ensuring durability and reliability. It is suitable for use in soft board FPC and multi-layer board keyboards and remote control buttons.
Triangular metal studs are specifically designed for installation on single-sided or double-sided printed circuit boards, flexible circuits, and films, featuring through-holes in the circuit board.
For applications requiring excellent tactile feedback yet constrained by space, such as compact handheld devices, our triangular series metal studs represent the ideal solution. Within the same diameter, triangular domes deliver the highest actuation force. With a trigger force reaching 540 grams, these tactile domes can function as gravity-controlled switches, preventing accidental operation.
Most triangular domes feature two legs for insertion into PCB holes, enabling adhesive-free mounting. Their high-temperature resistance has led to their common designation as ‘legged metal domes’.
Stainless Steels Metal Domes are available in multiple diameters ranging from 4mm to 12mm, with a broad trigger force range spanning 100g to 5000g. A significant advantage of this series lies in its ability to achieve higher trigger forces, typically exceeding 600g, particularly when compared to switches of identical diameter. This makes them especially suitable for applications requiring robust tactile feedback and substantial trigger force within compact designs.
To accommodate diverse dome requirements, Hongmao offers Stainless Steels Metal Domes with multiple characteristics.
Metal Domes are further categorized based on their structural design, specifically the presence and size of legs. Here are the four variations:
1. Without legs
2. With two short legs measuring 0.8mm in width and 0.8mm in length
3. With two middle legs measuring 0.8mm in width and 1.5mm in length
4. With two long legs measuring 0.8mm in width and 3.0mm in length
The structural variations in metal dome designs enable diverse mounting methods and performance characteristics, offering flexibility for dome integration across different equipment and applications.
