POLARIS-KEYPAD membrane switches can be built with surface mount LEDs embedded into the switch package to provide a cost effective way for backlighting.

1: LEDs assembled on the PET/FPC/PCB circuit layer; 

2: can assemble 0805, 1206 and other package type LEDs; 

3: LED window on the overlay can be embossed or flat;     

4: LED window can be clear or print transparent color;

5: long life; 

6: low cost;

Key Specifications/Special Features:

Advantages:

1) Both Pantone and real color matching system, using  advanced light box and computer color matching;

2) Good material control to make sure all the materials are high quality;

3) Compliant with the RoHS Directive;

4) 100% functional testing and specified testing, such as humility testing, life expectancy testing, actuation force testing;

5) Except membrane switch and touchscreen, different types of assembly, such as membrane switch and touchscreen with FPC, PCB, silicone rubber, metal backer, plastic bezel and more;

Electrical Performance:

1) Loop resistance: function of trace width and length, 10 to 500Ω (varies from the trace length and material), in most applications the maximum loop resistance is less than 100Ω;

2) Open-circuit: 50MΩ minimum;

3) Contact rating: 100 Milliamps at 36V DC maximum;

4) Maximum circuit rating: 36V DC, 100mA, 1W;

5) Insulation resistance: 100mΩ, 100V;

6) Dielectric: 250Vrms (50 to 60Hz);

7) Contact bounce: <5ms;

8) Life cycle: 1 million times nominal;

9) Operating temperature range: -45 to +80°C;

10) Flat button can reach to 5 million times;

Mechanical:

1) Actuation force:

     1.1) Flat Buttons: 57 to 284g (2 to 10oz);

     1.2) Tactile Buttons: 170 to 397g (6 to 14oz);

2) Switch height:

    2.1) Flat Buttons: 0.1 to 0.5mm;

    2.2) Tactile Buttons : 0.3 to 1.5mm;