Key Specification

1. Embossed metal domes
2. Material: PET
3. Rear adhesive 3M467

Shenzhen Lunfeng Namplate Co., Ltd. is a professional membrane keyboard in Electronic Components & supplies, membrane keyboard is widely used on industrial and home electronic equipments.
Tactile Membrane Switch With Fpc as Below Circuit Sheet specifications/special Features:
Membrane overlay material: matte Polycarbonate (PC) , gloss Polycarbonate (PC) + matte oil, gloss PC, Polyester (PET)
Keyboard Thickness: 0.4---1.0mm
LED windows: transparent and translucent
Embossed switches: no embossed keys and domes, domes without embossed keys, embossed keys without domes, embossed keys and metal domes
Adhesive: 3M9448,3M467, 3M468, 3M300LSE, Nitto, and no adhesive
Tail: tail with clear mask or green mask

Tactile Membrane Switch With Fpc as Below Circuit Sheet Advantages: 
1.Beautiful appearance, rich and bright in color, design can be arbitrary, the products can fully reflect the individual style of the product itself and designer.  
2. Panel can wash, good protection of durable color, characters, logos and other panel contents without injury.  
3. Small size, light weight, thin thickness, good tactility, abrasion resistant, installation and connection convenience.  
4. Tightness is good, moisture-proof, dust-proof, waterproof, anti-oil, anti-corrosion and erosion of harmful gases proof, acid and alkali proof, quake proof.  
5. Low cost, high lifespan, membrane switchs design and manufacture are using the keyboard as a whole way, whether on the material or mold charges, the costs are lowest, the life expectancy of  different types of membrane switch is more than 100 million times.  
6. Easy to operate, intuitive, safe and reliable, In-house 100% functionally tested, components are guaranteed without any intermittent problem.
7. Customized specification is available and keys can make different shapes.
1.Electricity performance: Working voltage: ?50VDC
Operating current: ?100mA
Contact resistance: 0.510?
Return route resistance:
Generally?150?, specially according
to customer request
Switch power: 0.25500Mw
Insulative resistance: ?100?
Base material pressure: 150VDC
2.Physical performance: Service life:1000000 times Touching
With joint forces: 15450g
Snapping back time: 10s
Closed displacement: 0.10.4ms(not touching)
0.41.0ms(with touching)
The caudal may fold: ?180°
3.Environment adaptability: Operating temperature:-1070
Depositing temperature: -4070
Work humidity: 95%
Altitude: 04500 meters
4.Machine capability: External dimension:400*800MM
Key size: according to customer request
Key spacing: >1.5MM
Line wide: ?0.5MM
Resisting vibration: (Reference to MIL-STD-202)
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