Construction and Specifications

Simple Membrane Switch

Multi-color silk sreen printing on overlay

Metal dome array adds good tactile feedback and bounce back force to embossed keys

Material

Overlay : Polycarbonate / Polyester (Autotype)
Double side Adhesive : 3M / Nitto / DSM

Material thickness

Overlay : Polycarbonate (0.15 – 0.5mm)
Polyester : (0.15 – 0.5mm)
Double-sided Adhesive : 0.05 – 0.3 mm

Key Embossment

Key height : 0.20 – 1.00 mm
Key shape : Square / Round / Ellipse

Specification

Contact resistance : 100 ohm – 500 ohm
Operating temp : -20°C – +75°C
Storage temp : – 20°C – +75°C
Operating humidity : Up to 98%RH
Life expectancy of metal domes : <1,000,000 cycles Actuation force range of metal domes : 150 – 450 g Absolute altitude of silk screen printing on overlay : 0.1 mm – 0.03 mm

Waterproof Membrane Switch

Industrial grade waterproof

With SMT LEDs, Embossment, Metal Dome Array, etc.

Material

Overlay : Polycarbonate / Polyester (Autotype)
Spacer : DSM
Circuit : Polyester + metal dome
Double side adhesive: 3M / Nitto / DSM

Material Thickness

Overlay : Polycarbonate (0.125 – 0.5mm)
Polyester (0.15 – 0.5 mm)
Circuit : 0.10 – 0.125 mm
Double-sided adhesive : 0.05 – 0.3mm

Key Embossment

Key height : 0.20 – 1.00 mm
Key shape : Square / Round / Ellipse

Specification

Contact resistance : 100ohm – 500 ohm
Operating temp : -20°C – +75°C
Storage temp : – 20°C – +75°C
Operating humidity : Up to 98%RH
Life expectancy of embossment : <300,000 cycles Life expectancy of metal domes : <1,000,000 cycles Actuation force of embossment : 50 – 300 gf Actuation force range of metal domes : 150 – 450 gf Absolute altitude of silk screen printing on overlay : 0.01 – 0.03 mm Absolute altitude of silk screen printing on circuitry : 0.01 – 0.05 mm LED operating life : 1000 hours LED operating voltage : 3V – 3.5V

EL Membrane Switch

A hard-wearing mat varnish or glossy finish with clear UV windows

EL backlight on circuitry

Material

Overlay : Polycarbonate / Polyester (Autotype matt surface)
Silicone rubber : Silicone and silk screen printing
Spacer : DSM
Circuit : Polyester with EL backlight
Double side adhesive: 3M / Nitto / DSM

Material Thickness

Overlay : Polycarbonate (0.125 – 0.5mm)
Polyester (0.15 – 0.5 mm)
Circuit : 0.10 – 0.125 mm
Double-sided adhesive : 0.05 – 0.3mm

Key Embossment

Key height : 0.20 – 1.00 mm
Key shape : Square / Round / Ellipse

Specification

Contact resistance : 100ohm – 500 ohm
Operating temp : -20°C – +80°C
Storage temp : 40°C – +90°C
Operating humidity : Up to 98%RH
Life expectancy of embossment : Life expectancy of metal domes : Actuation force of embossment : 50 – 200 gf
Actuation force range of metal domes : 150 – 450 gf
Absolute altitude of silk screen printing on overlay : 0.01 – 0.03 mm
Absolute altitude of silk screen printing on circuitry : 0.01 – 0.05 mm
EL light life time : 700 – 4,000 hours (different colors)

Membrane Switch with Silicone Rubber Keys / Keypad

An aluminum / plastic backpanel is optional

Material

Overlay : Polycarbonate / Polyester (Autotype matt surface)
Silicone rubber : Silicone and silk screen printing
Spacer : DSM
Circuit : Polyester
Double side adhesive: 3M / Nitto / DSM

Material Thickness

Overlay : Polycarbonate (0.125 – 0.5mm)
Polyester (0.15 – 0.5 mm)
Circuit : 0.10 – 0.125 mm
Double-sided adhesive : 0.05 – 0.3mm

Key Embossment

Key height : 0.20 – 1.00 mm
Key shape : Square / Round / Ellipse

Specification

Contact resistance : 100ohm – 500 ohm
Operating temp : -20°C – +80°C
Storage temp : 40°C – +90°C
Operating humidity : Up to 98%RH
Life expectancy of embossment : <300,000 cycles Life expectancy of metal domes : <1,000,000 cycles Actuation force of embossment : 50 – 200 gf Actuation force range of metal domes : 150 – 450 gf Absolute altitude of silk screen printing on overlay : 0.01 – 0.03 mm Absolute altitude of silk screen printing on circuitry : 0.01 – 0.05 mm Aluminum plate : Stiffener