Overview:
The Metal Dome Silicone Rubber Keypad, the uppermost layer consists of premium-grade silicone， Positioned beneath each key within the silicone rubber layer, metal dome contacts are small, dome-shaped discs typically made of stainless steel or nickel-plated steel, also can choose silver and gold.
Metal domes generally sustain 5 million actuations and function across a temperature spectrum spanning from -45°C to +100°C. Coupled with the resilient properties of silicone, the metal dome silicone keypads can withstand repeated use without wearing out quickly.
Features Include:
| Detection Method | Correlation Type |
| Materials | Silicone Rubber |
| Environmental Friendly | SGS, RoHS |
| Surface Coating | PU Coating, Matte Smooth Coating, Epoxy Coating |
| Place of Origin | Xiamen, China |
| Color | Any color is available (as customer request) |
| Logo | Customized |
| Production Capacity | 50,000 PCS/Week |
| Contact Resistance | 10-200 Ohm |
| Legend | Silk Screen, Laser Etching |
| Conductive Way | Conductive Printing, Carbon Pills, Metal Dome |
| Transport Package | Poly Bag, Carton Boxes |
About The Metal Dome:
1.Four Main Types Of Metal Domes
- Circular Metal Domes: Circular domes offer longer lifecycle durability compared to triangle domes, averaging >= 1 million actuations.
- Four-Leg Metal Domes: Designed for circuits needing both positive and negative traces, these domes provide a robust clicking feel with sizes ranging from 5mm to 20mm and forces from 125-500 gf.
- Triangle Metal Domes: Triangle domes excel in applications requiring high activation forces up to 6,000 gf, ideal for high-temperature environments due to their adhesive-free mounting capability.
- Oblong Metal Domes: Oblong domes are tailored for compact switches on circuit boards, offering flexibility in size (from 3mm x 4mm to 51mm x 13.70mm) and force range (100-500 gf).
2.Metal Dome Different Structure
(1) Single-Layer Structure:
- Description: The metal dome is positioned beneath a single layer of silicone rubber.
- Features: Simple design suitable for basic tactile feedback and straightforward assembly.
(2) Double-Layer Structure:
- Description: Includes an additional spacer layer between the silicone rubber and the metal dome.
- Advantages: Enhances tactile feel similar to membrane switches, improves contact with the PCB, and includes effective vent holes to prevent dust and ensure durability.
(3) EMI Printing:
- Description: Involves applying a layer of EMI (Electromagnetic Interference) shielding material or conductive ink on top of the silicone rubber.
- Purpose: Provides protection against electromagnetic interference, ensuring the keypad’s reliability in electronic devices.
(4) Rubber Adhesive Layer:
- Description: A layer of silicone adhesive applied to the underside of the keypad.
- Function: Facilitates strong adhesion to PCBs or other surfaces, ensuring robust performance and longevity of the keypad assembly.
Our Customized Service:
- Custom design solutions
- Material selection
- Color customization
- Logo and marking options
- Tactile feedback customization
Our Advantage:
- Quality documentation
- Robust manufacturing capabilities
- Skilled workforce
- High-grade raw materials
- Competitive pricing
- A proficient team of industry experts
