Membrane Switch Keypad
- Flat and all embossed key type with either metal dome or Mylar dome.
- SMT components, such as LED, resistors and sensors.
- Overlay material: Polyester, Polycarbonate, Thermoplastic Polyurethane, Rubber.
- textured surface(or matte surface treatment) with choices of transparent or color printing display window
- Special design: EMI, RFI, or ESD shielding.
- Waterproof type (IP65).
- Jumper wire, through-hole type.
- The technique for min punching hole is 1.14mm.
- Tail: without pins, male pins or female pins with connector.
- Circuit choice: Mylar circuit, FPC circuit or PCB circuit.
- Special structure: Rubber keypad, Aluminium keypad, Light Guild Film (LGF) backlight effect, Touch Panel integration.
Electrical characteristics
Maximum
Circuit Rating
35V( DC)100mA 1W
Contact Resistance
10Ω~500Ω
(Depending on trace length & material
used).
Insulation Resistance
100MΩ at 100V DC
Dielectric Withstand
250 V Rms (50~60 Hz 1 min.)
Contact Bounce
≦5ms
Life Expectancy
Flat type ≧ 5 million closures
Mylar type ≧ 2 million closures
Metal type ≧ 1 million closures
Mechanical characteristics
Actuation
Force
Flat type = 60 to300 g(2 to10 oz)
Tactile type = 180 to400 g(6 to14 oz)
Switch Stroke
Flat type = 0.1 to0.5mm
Tactile type = 0.6 to1.5mm
Environmental parameters
Operation
Temperature
Flat/Metal dome:-40 °Cto +80
°C
Poly dome:-20 °Cto +55
°C
Storage Temperature
Flat/Metal dome:-40 °Cto +85
°C
Poly dome:-40 °Cto +60
°C
Humidity
40 °C , 90% ~ 95% for 240 hours
Vibration
20 G's0 max
(10-200 Hz、MIL-STD-202、M204、Condition
B)
