Center Hole Metal Domes - Premium LED Backlight Tactile Switches
Shanyo precision-manufactures premium center hole metal domes (also known as through-hole snap domes or LED tactile domes) for membrane switches, keypads, and electronic interfaces requiring a central mounting hole for LED backlight illumination or mechanical alignment. Our center hole domes feature a precision-formed circular opening at the apex, allowing uniform light transmission from LEDs beneath the dome while maintaining crisp, reliable tactile feedback with every actuation.
Technical Specifications
| Material | SUS301 Stainless Steel - High elasticity and corrosion resistance |
| Dome Diameter | 5mm - 12mm - Custom sizes available |
| Center Hole Size | 1.0mm - 3.0mm - Matches LED size requirements |
| Actuation Force | 180gf - 500gf - Custom force options available |
| Life Cycle | 1,000,000+ cycles - Stable performance throughout product lifetime |
| Plating Options | Nickel (Ni), Gold (Au), Silver (Ag) - Gold recommended for high-reliability applications |
| Operating Temperature | -40°C to +85°C - Suitable for automotive and industrial environments |
| Contact Resistance | ≤100mΩ - Low resistance ensures reliable electrical connections |
Applications & Industries
Technical Specifications
Automotive Electronics
Industrial HMI Panels
Aerospace & Defense
Medical Devices
Consumer Electronics
Telecommunications
How Center Hole Metal Domes Enable LED Backlighting
The center hole acts as a precision optical window. An SMT LED mounted beneath the dome shines through the aperture, evenly illuminating the key legend on the overlay above. Because the hole is laser-aligned to the dome apex, light is directed straight upward without spillage onto adjacent keys. This design is widely preferred in automotive steering wheel controls, HMI pushbutton panels, and medical device keypads where illuminated key identification is essential for nighttime operation or low-light environments.
Selecting the Right Center Hole Dome for Your Project
Choosing the correct center hole dome involves balancing four parameters: dome diameter (matching the key cap footprint), hole size (typically 1.0–3.0mm to match LED pitch), actuation force (180–500gf depending on user feedback preference), and plating (nickel for general use, gold for high-reliability or corrosive environments). Our engineering team supports DFM review from prototype through mass production, providing samples within 3–5 working days for qualified designs.
Common Applications
- Automotive: Steering wheel multifunction switches, dashboard buttons, center console controls
- Industrial HMI: Pushbutton panels, PLC control interfaces, machine operator stations
- Medical: Infusion pump keypads, patient monitor controls, diagnostic device buttons
- Consumer Electronics: TV remotes, home appliance control panels, audio equipment
- Telecommunications: PTT radios, base station control units, network equipment panels
Looking for a center hole metal dome supplier? We also manufacture LED backlight snap domes, through-hole tactile domes, and custom aperture metal domes for backlit keypad designs. Explore our automotive snap dome range or request a free sample.
About Shanyo - Your Trusted Metal Dome Manufacturer
Shanyo (Qingdao Shanyuan Precision Electronics Co., Ltd.) is a leading China manufacturer and supplier of premium metal domes, snap domes, and tactile switch components with over 20 years of industry experience. Our 8,000 square meter state-of-the-art manufacturing facility is equipped with 12 high-speed precision stamping lines, enabling us to produce over 50 million metal domes monthly.
We hold IATF 16949, ISO 9001, and ISO 13485 certifications, ensuring the highest quality standards for automotive, medical, and industrial applications. Our products are exported to over 40 countries worldwide, serving leading brands in automotive electronics, medical devices, consumer electronics, and industrial automation.
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