dome array side key for MP3 player

(1).light & small:(2).Nice handle & returned dome with breathe freely hole on METAL DOME.(3). used in cheap single layer PCB

4 Dongguan XingAn Electronics Co.,LTD-Metal dome array

The Metal dome array (key dome array) is the most cost effective solution for a simple switch with a superior tactile interface between your equipment and the user. A metal dome array is a kind of PET sheet that carries metal dome contacts. It is applied to PCBs to function as switches of mobile phones and electric home appliances. Compared to the membrane polyester switch which was formerly used, it gives good click-feeling. It also gives much longer lasting life span compared to poly dome sheets. It also takes place of down going productivity of tact switches with its potential productivity.

Metal dome contacts on the sheet/array are positioned over the contact point of PCBs. When a dome is pressed, the center of it contacts to the PCB and let the electric current flow through. This is how Metal dome array work.

Advantage: A long life time over than million click, a uniformity click feel, nimble feel, a low cost and a short term of R&D, higher confront face each other than change market, very good for fit to small and slim size because practical use for thickness & space of products, not necessary to specify soldering at that time of product assembly, environmental and cut troublesome of repair parts and low work’s error rate than tact switch type

ACTIVATE works very closely with its customers in order to insure the success of its projects. Working on the customer’s drawing, the Research and Development Department offers specific solutions that meet your needs.

Our Metal dome array divide into four types:

Single Layer  , Double Layer , EMI Printing , and EMI printing/Rubber Glue.

Characters of single layer dome array:

light & smallMainly used in cheap single layer PCB.Nice handle & returned dome with breathe freely hole on Snap dome

Structure of dome array

MATERIAL LIST:

NO. NAME MATERIAL 1 MYLAR WHITE TLW 2 METAL DOME SUS301/SUS304

Technical Parameter of Dome Array:
Total Height:	0.28-0.45 mm
Travel:	0.13-0.30 mm
Scope of Force:	100-400 gf
Tolerance of Force:	±25 gf
Click Ratio:	>30%
Life Cycles:	>1 Million Cycles
Salt and Fog Examination:	v35±2°C, 5±0.1%, 48H
Working Temperature:	-20°C-50°C
Working Humidity:	Under 100%RH
Touch Resistance:	<1 ohm
ESD Resistance:	<3 ohm
Dimension Tolerance:	±0.05-±0.15mm

dome array side key for MP3 player