What Is Four Legs Tactile Metal Dome Switch ？
The four legs tactile metal dome switch is a precision elastic component made of stainless steel SUS301/304 with a thickness range of 0.05mm–0.1mm. This metal dome switch features a unique four-leg support structure that enables reliable switching functionality – when pressed, the center point contacts the PCB circuit to establish conduction, then automatically rebounds using material elasticity when released.
This dome switch is renowned for its maximum operating travel, relatively high actuation force, and crisp audible feedback. The four-leg support structure ensures exceptional stability, with a service life exceeding 500,000 cycles. Its working principle is based on the dome center deforming under pressure to contact the PCB circuit, completing the “press-conduct-release-disconnect” switching cycle.
As a crucial member of the metal dome family, the four legs structure offers longer travel and clearer tactile feedback compared to circular and triangular domes. It is typically supplied as individual domes or pre-mounted on PET films (as “dome switch stickers”), supporting customized sizes, actuation forces, and surface treatments to meet specific application requirements.
Technical Drawing of Four Legs Tactile Metal Dome Switch
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ContattoProduct Parameters
| Interruttore a cupola a quattro gambe | ||||||||
|---|---|---|---|---|---|---|---|---|
| Size | CLICK RATIO (%) | Forza | Life cycles | plating | ||||
| Acciaio inox | Nickel(NI) | Silver(Ag) | Gold(Au) | |||||
 | 5.5mm | 55±15 | 160±20g | 1,000,000 | ✓ | |||
 | 5.0mm | 60±10 | 180±20g | 1,000,000 | ✓ | |||
 | 12,2 mm | 60±15 | 130±20g | 1,000,000 | ✓ | |||
| 60±15 | 160±20g | 1,000,000 | ✓ | |||||
| 60±15 | 180±20g | 1,000,000 | ✓ | |||||
| 60±15 | 220±30g | 1,000,000 | ✓ | |||||
| 60±15 | 280±30g | 1,000,000 | ✓ | |||||
| 60±15 | 340±40g | 1,000,000 | ✓ | |||||
| 60±15 | 400±40g | 1,000,000 | ✓ | |||||
| 60±15 | 450±50g | 1,000,000 | ✓ | |||||
 | 12,2 mm | 60±15 | 160±20g | 1,000,000 | ✓ | |||
| 60±15 | 180±20g | 1,000,000 | ✓ | |||||
| 60±15 | 200±20g | 1,000,000 | ✓ | |||||
| 60±15 | 220±30g | 1,000,000 | ✓ | |||||
 | 12,2 mm | 60±15 | 250±30g | 1,000,000 | ✓ | |||
| 60±15 | 280±30g | 1,000,000 | ✓ | |||||
| 60±15 | 340±40g | 1,000,000 | ✓ | |||||
| 60±15 | 400±50g | 1,000,000 | ✓ | |||||
 | 6.0mm | 60±15 | 80±20g | 1,000,000 | ✓ | |||
| 60±15 | 130±20g | 1,000,000 | ✓ | |||||
| 60±15 | 160±20g | 1,000,000 | ✓ | |||||
| 60±15 | 180±20g | 1,000,000 | ✓ | |||||
| 60±15 | 200±20g | 1,000,000 | ✓ | |||||
| 60±15 | 220±20g | 1,000,000 | ✓ | |||||
| 60±15 | 260±30g | 1,000,000 | ✓ | |||||
| 60±15 | 280±30g | 1,000,000 | ✓ | |||||
| 8,4 mm | 65±15 | 200±20g | 1,000,000 | ✓ | |||
| 65±15 | 220±30g | 1,000,000 | ✓ | |||||
| 65±15 | 260±30g | 1,000,000 | ✓ | |||||
| 65±15 | 280±30g | 1,000,000 | ✓ | |||||
| 65±15 | 340±40g | 1,000,000 | ✓ | |||||
 | 7.0mm | 65±15 | 200±20g | 1,000,000 | ✓ | |||
| 65±15 | 220±30g | 1,000,000 | ✓ | |||||
| 65±15 | 260±30g | 1,000,000 | ✓ | |||||
| 65±15 | 280±30g | 1,000,000 | ✓ | |||||
| 65±15 | 300±40g | 1,000,000 | ✓ | |||||
 | 10.0mm | 65±15 | 200±20g | 1,000,000 | ✓ | |||
| 65±15 | 220±30g | 1,000,000 | ✓ | |||||
| 65±15 | 260±30g | 1,000,000 | ✓ | |||||
| 65±15 | 280±30g | 1,000,000 | ✓ | |||||
| 65±15 | 300±40g | 1,000,000 | ✓ | |||||
| 65±15 | 340±40g | 1,000,000 | ✓ | |||||
| 65±15 | 400±50g | 1,000,000 | ✓ | |||||
Why Choose Shanyo's Four Legs Tactile Metal Dome Switch?
Maximum Travel & Clear Tactile Feel
The four legs tactile metal dome switch provides significant press travel and crisp audible feedback, dramatically improving user tactile experience.
High Stability
The four-leg support design effectively distributes stress, ensuring stable contact - particularly suitable for high-frequency or precision equipment.
Extended Service Life
Premium stainless steel material and innovative structural design enable this four legs tactile Metal Dome to achieve over 500,000 cycles with excellent reliability.
Excellent Adaptability
Supports wide temperature operation (-40℃~85℃) with good moisture and salt spray resistance, compliant with RoHS environmental requirements.
Easy Installation
This four legs tactile metal dome switches can be pre-mounted on PET films for quick positioning and assembly, substantially reducing production complexity and assembly costs.
Superior Conductivity
Surface Nickel (Ni) plating primarily enhances corrosion resistance, preventing oxidation that would otherwise increase contact resistance over time. It maintains a stable contact resistance, typically in the range of 100 mΩ to 500 mΩ.
Trova la tua applicazione: Versatile per design
Shanyo's custom four legs tactile metal dome switches can be applied to various industries and specific products.
| Application Category | Typical Products | Description |
|---|---|---|
| Elettronica di consumo | Remote controls, mobile phones, game consoles, digital cameras | Commonly uses 7mm, 8.4mm sizes for clear tactile feedback |
| Security Devices | Banking U-shields, POS terminals, smart safes | High cycle life and anti-misoperation design ensures device security |
| Industrial Control | Membrane switches, control panels, instrument buttons | Large-area buttons suitable for 12.2mm and other large Metal Domes |
| Medical & Beauty Care | Electric toothbrushes, massagers, medical instruments | Meets special requirements for corrosion resistance and high sealing |
| Building Systems | Access control intercoms, smart control panels | Typically uses 8.4mm, 12.2mm Dome Switches |
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Shanyo collaborates with leading companies across various industries worldwide to design and manufacture metal dome switches for them.
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FAQ
What are the main differences between four legs tactile metal dome switches and circular/triangular ones?
A: four legs Metal Dome switches feature maximum travel, higher actuation force, and superior support stability with crisp audible feedback. Circular domes have minimal travel and weaker sound, while triangular domes fall between but typically have shorter lifespan than four legs domes.
Can the four legs metal dome switch really achieve 500,000 cycles?
Yes. four legs Metal Domes made from imported SUS301/304 stainless steel with strictly controlled manufacturing processes can reliably achieve over 500,000 cycles under standard pressing conditions.
Can Metal Dome switches be customized with different surface platings?
Absolutely. Shanyo supports various surface treatments, including gold plating (0.15–0.2μm), silver plating, and nickel plating. Gold plating suits high-conductivity applications, while nickel plating focuses more on corrosion resistance.
How to select the appropriate dome switch? What specifications do you recommend?
Choose based on application:
Remote controls/Small appliances: 7mm, 8.4mm with 150gf–200gf force
Industrial panels/Security devices: 12.2mm, 14mm with 200gf–280gf force
Medical/Automotive equipment: Recommend gold plating with verification of -30℃~85℃ temperature adaptability
What precautions should be taken during dome switch assembly?
Ensure the dome center aligns with PCB contact points with ≤0.1mm deviation
Avoid soldering temperatures affecting dome rebound performance
Recommend using PET films with ventilation holes during mounting to prevent tactile feel loss
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