东莞市兴安电子有限公司

1.Specification

Type Size(mm) Force(g)

Round Dome 4.0 5.0 more 150~250g 150~250g

Oval Domes 5.0 more

150~250g

4 Leg Domes 6.0 more

150~250g

general Use Force:180±30g

2.Structure

1 Mylar Adhesive:

Thickness:0.05&0.08±0.005

Color：White&Transparency

2 Metal dome:

Stainless&Nickel

3 Rubber Adhesive(DSMS)

4 Spacer:

Thickness:0.05&0.08±0.005

Color：White&Transparency

5 EMI(Electro Magnetic Interference)

3. Environmental Test:

Item Test Test Condition Results

1 High Temp. Test +85oC, 48 hrs. No Change

2 Low Temp. Test - 40oC, 48 hrs. No Change

3 Humidity Test +66oC, 95% RH x 48 hrs. No Change

4 Thermal Shock Test - 40oC x 1 hr. & 85oC x 1 hr. ( 32 Cycles) No Change

5 Salt Spray 5% Nacl with 95% water 35oC, 24 hrs. No Change

4. Mechanical:

4.1 Life Expectancy: 500,000 cycles (Test Speed: 1-2 cycles / second)

4.2 Dome Travel : 0.17 +/- 0.04mm

4.3 Dome Thickness: 0.06 +/- 0.005mm

4.5 Contact Bounce: 5ms maximum

4.6 Dimensional Tolerance: +/-0.15mm

4.7 Click : F1-F2/F1 = 30% to 50%

4.8 Contact Resistance : <3Ω

4.9 EMI Resistance:

A：Ag Ink Printing ：<2.0Ω

B：Aluminum Sheet：<0.5Ω