Specifications 
metal dome membrane switch with rigidback 
1 material: PET 
2 adhesive: 3M467 & 3M468 
3 Type: metal dome tactile 
4 Pass: ISO9001: 2000, RoHS 

1. Overlay Materials: The most commonly used base materials arepolyester(PET) and polycarbonate(PC). 
2. Rear Adhesive: 3M467MP, . Rear Adhesive 3M468MP,etc. 
3. Matching color: Pantone and RALcolor matchingsystem. 
4. Gloss, semi-gloss or matte 
5. metal dome tactile 

6. Standard Tolerances: /- 0.10inch(/-0.25mm) 
7. Performance 

A. Electric Parameter 
Resistance: <1Ω /cm 
Contact current: 25~100mA 
Voltage rating: 2~24V 
Voltage insulation: 1500V 
Voltage endurance: 250V(60Hz/min) 
Insulation resistance: 500VDC500MΩ 

B. Physical Parameter 
Active force: 0.3~3N 
Lifecycle: >1mil. (non-tactile) 
Hand speed: ≤ 5ms 
Temperature: -40~ 70 
Humidity: 40, 48h95% 
Work altitude: 0-4500M 

C. Travel Distance 
Non-tactile: 0.1~0.3mm 
Tactile: 0.4~1.0mm