Custom Polyester Matrix illuminated Membrane Keypad for Door System

1 Membrane keypad 2 LEDs embedded for backlighting 3 Custom design 4 Back self-adhesive 5 All materials are RoHS approved

Custom Matrix illuminated Membrane Keypad for Door System

1. Overlay materials:

 A variety of overlay materials are used in membrane switch appliactions. Different material performs differently. Often, PET(Polyester) and PC (Polycarbonate) are more suggested.

 

 

2. Tactile feedback for button switches

For obtaining a good feedback from the buttons, there are usually two methods to make it.

A. Raising certain areas of the graphic overlay by tooling can be offered --Poly Domes. And the shapes and styles of the embossing can be various flexibly. Common hard-tooled embossing types include: Ring embossing, pillow embossing and dome embossing .

B. Adding extra parts on the switch to get the crisp effect--Metal domes. Metal domes can be provided in several different sizes according to the switch sze.

 

3.Cut-outs

For some products, it needs holes and cutouts to meet its final application. Usually, these cutouts are achieved by laser cutting machine and hard tooling punching.

 

4. Flat flexible cable

As a keypad, it is usually required to have conductive  performance. It is the circuit called in the membrane industry. it can be flexibly designed on a polyester sheet with silver conductivity printed. Also it can be copper etched for a better stability in the performance.

 

 

 

Electrical	Maximum Circuit Rating	35V(DC),100mA 1W
	Contact Resistance	10-500(depending on trace length & material used)
	Insulation Resistance	≥100MΩ at 100V
	Dielectric Withstand	250V ROMs(50-60Hz 1 min)
	Contact Bounce	≤5ms
	Life Expectancy	Flat type≥5,000,000 times Tactile type≥1,000,000times
Mechanical	Actuation Force	Flat type	57 to 284g(2 to 10 OZ)
		Tactile type	170 to 397g(6 to14 oz)
	Switch Stroke	Flat type	0.1 to 0.5mm
		Tactile type	0.6 to 1.5mm
Environmental	Operation Temperature	Flat/Metal dome	-20°C to + 80°C
		Poly dome	-20°C to  + 55°C
	Storage Temperature	Flat/Metal dome	-40°C to + 80°C
		Poly dome	-40°C to + 60°C
	Humidity	40°C,90% for 240 hours
	Vibration	20G's max(10-200Hz,MIL-STD202,M204,Condition B)

Custom Polyester Matrix illuminated Membrane Keypad for Door System