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METAL DOME ARRAY STRUCTURE

  • Which Advantage about the METAL DOME that GUANGHONGDA TECHNOLOGY manufacturing ?  which make use of thinner 0.05mm~0.1mm thickness SUS301 stainless Steel , Features are :
  1. 1.Customized Shape  ,
  2. 2.Life-time is over 5Million hits ,
  3. 3.High-presion
  4. 4.Small CHanging rate ,
  5. 5.Stable force & click ratio ,
  6. 6.Sensitive Contacts & etc.

It's convenient to take to stick on the appearance of PCB , FPC or Membrance switch Insteaded ,

Which is widely used in the field of : Mobilephone , POS MACHINE , Remote control , Devices Panel , Camera keys , Laptop Keyboards and other keypads .

GUANGHONGDA TECHNOLOGY METAL DOME MAJOR TECHNICAL SPEICIFICATION
ITEM DESCRIPTION METAL  DOME  TECHNICAL  INDEX
1 LONGER

LIFE-TIME

(HITS)

Round Oval, four - legged, triangular, rectangular, three - point side, irregular
Stainless Steel Nickel Plating Silver Plating & gold Plating
Dimple Numbers : 0/1/3/4/5 dimple
LIFE-TIME : 300 ~3000 Thousand HIts
In compare of initial value , The change rate <30% after 1MILLION Hits
2 Click Ratio % Force:100gf~450gf; Tolerance : ±20gf
Click Ratio: 50±10%   Normal Condition
3 Metal Dome  Stroke Customize in accordance with Customer ‘s requirement
0.12~0.6mm (Spec. various by different METAL DOME )
4 Dimension
Tolerance
Position dimension tolerance : + /- 0.1mm
5 Good Weatherproof Resistance Under the conditions of 55±2,R.H.95% , Replacement 24H , and then resume 2H under the normal room temperature
6 Good Corrosion Resistance
High Temperature can bear : +70
Lower Temperature can bear : -40
7 Tape Adhesive Test 0.6↑(Unitkgf/inch)
8 Stable Tape
Shrinkage rate
MD(%):0.5 ↓ CD(%):0.3 ↓
(Unit100*40mins)
9

Small Instantaneous

Contact Resistance

Nickel Plating Stainless Steel
10 Total Thickness of Base materials 0.05mm0.075mm0.1mm0.125mm0.15mm Normal Thickness Spec.
11 Light-Guide-film Uniformity >75%


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