Nanjing Zhongshan Membrane Switch Co., Ltd.
Nanjing Zhongshan Membrane Switch Co., Ltd. Over 20 Years of Membrane Switch Supplier
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Custom waterproof metal dome membrane photoelectric switches for
Medical appliances / ZS-87 / Flat and tactile overlay
What is Membrane Switch?
The membrane switch is a momentary switching device that is manufactured by using a
series of flexible layers of polymer films and adhesives. The top layer, called a graphic
overlay, is manufactured by printing on the down surface of transparent polyester or
polycarbonate film.
Membrane switches can be constructed of multiple circuit layers, and more optimized graphic
design features, such as domed key embossing. Designs that are more complex require more
material layers for proper construction and reliable operation. Membrane switches, when
combined with components such as a tactile dome, graphic overlay, or integrated LEDs or
resistors can provide the designer with virtually limitless capabilities to create the ideal
custom user interface for their products.
Basic Properties
| Electrical Properties: | |
|
Rated Voltage
| ≤50V DC |
|
Rated Current
| ≤ 100mA |
|
Operating Power
| ≤1W |
|
Insulation Resistance
| ≥100MΩ (250V DC) |
|
Loop Resistance
| 10Ω~2kΩ (based on the design) |
|
Contact Resistance
| 0.5 ~ 5Ω |
|
Wire Lead Resistance
| <1Ω/cm |
|
Base Material Voltage Withstand
| 1500V DC |
|
Mechanical Properties:
| |
|
Life Expectancy
| Flat type ≥ 5 million times, Tactile type ≥ 1 million times |
|
Operation Force
| Flat Type 57-284g ,Tactile Type 170-397g |
|
Dome Rebound Time
| ≤6ms |
|
Tail Bending Performance
| ≤180° |
|
Switch Stroke
| Flat 0.1~0.5mm,Tactile 0.6~1.5mm |
|
Vibration
| 20G's max. |
|
Thickness
| 0.7~1.5 mm |
|
Environmental Properties:
| |
|
Operation Temperature
| -40°C to +80°C (-40°to 176°F) |
|
Storage Temperature
| -40°C to +85°C (-40°to 185°F) |
|
Atmospheric Pressure
| 86 ~ 106 kPa |
| Humidity | +40°C, 90%~95%RH for 240 Hours |
Our Advantages
1. We are a factory with total about 488 staff, 200 thousands square meter. Throughout
production process our quality is strictly being controlled with detailed record. All of our
machines were upgraded ONE year ago and brand new.
2. With more than 18 years experiences of 10 Designers and 18 Engineers, so customized
product service is No problem, we can offer you the best solutions.
3. You will get fairly competitive prices with fantastic quality products. Also the packaging,
delivery time and after-sales services are guaranteed, we have a powerful and professional
team.