When designing a user interface for electronics, tactile feedback is critical. Two popular solutions — metal dome and polydome switches — both deliver that satisfying click, but differ in cost, durability, and application fit.

What Is a 金属薄膜 Switch?

Metal dome switches use a thin stainless steel dome positioned over a circuit contact. When pressed, the dome collapses with a distinct snap, completing the circuit. Materials: stainless steel, available in diameters from 3mm to 20mm, with trip force ranging 50g–600g.

What Is a 半球形按键 Switch?

半球形按键 switches emboss the circuit layer and faceplate together, forming an integrated tactile bump. Total height is only 0.40–0.65mm, with elasticity from 100g–400g. Life cycles exceed 500,000 operations.

Head-to-Head Comparison

Parameter	金属薄膜	半球形按键
Material	Stainless steel	Polyester film
Life cycle	>1 million	>500,000
Cost	Higher (part + assembly)	Lower (single process)
Tactile feel	Crisp, consistent	Soft, uniform
Height	0.3–0.6mm	0.40–0.65mm
Minimum qty fit	Medium–high volume	Flexible MOQ

When to Choose 金属薄膜

• High-usage devices (game consoles, remote controls, medical panels) needing millions of clicks
• Applications requiring crisp, positive tactile feedback
• 产品中心 where assembly precision is controlled in-house

When to Choose 半球形按键

• Cost-sensitive projects with moderate cycle requirements
• Low-profile designs where component height matters
• Fast prototyping and flexible production runs

三特兴 Electronics manufactures both metal dome and polydome switches with ISO 9001 quality control. 联系我们 our team for a quotation and DFM review.