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[China]
Trade Verify
Address: 1st/F, Building 3, Hesen Industry Park, No. 131 of Huailin Rd., Huaide Area, Humen Town, Dongguan, Guangdong, China 523926
Contact name:May
Dongguan Luphi Electronics Technology Co., Ltd. |
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Verified Suppliers
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3M468 Adhesive Metal Dome Flat Membrane Switch For Measuring Instrument
A membrane switch is an electrical switch for turning a circuit on
and off. It differs from a mechanical switch. Membrane switch is
very thin and soft. The touch surface material usually is PET or
PC. The circuit can be PET, FPC or even PCB. Membrane switches are
user-equipment interface utilities that allow for the communication
of commands from users to electronic devices.
> Construction:
A membrane switch typically has 6 or more or less layers. The top
layer of a membrane switch is the graphic overlay interface between
the user and the machine. The other critical layer is a the circuit
layer. It can also be PET, FPC or PCB. All the layers are normally
assembled using pressure-sensitive adhesives. Contact between two
traces can be made through a printed shorting pad or through a
metal dome that stands on legs.
> Membrane Keypad Structure
1) 4 layers structure: Graphic overlay + Spacer + Circuit(can be
PET circuit or FPC circuit) + Back Adhesive
2) 6 layers structure: Graphic overlay + Spacer: Dome Retainer +
Spacer + Circuit(can be PET circuit or FPC circuit) + Back
Adhesive;
3) Other Structure
3.1) Overlay + Rubber Adhesive + Rubber Keypad + Rubber Adhesive +
Retainer + Spacer + Circuit + Back Adhesive;
3.2) Overlay + Spacer + Retainer + PCB Circuit;
And also there are many other kinds of structures for the interface
keypads structure. It based on customer's real needs and we can
design the suitable and economical structure for our customer's
final application.
> Main Technical Specifications:
Item | Description | Technical capabilities | ||
1 | Max. Size | 1200mm x 1000mm | ||
2 | Overlay Material |
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| Spacer | 3M Adhesive, NITTO, TESA, SONY, SEKISUI, Domestic Adhesive | ||
4 | Back Adhesive | 3M(Mainly), Others(Little) | ||
5 | Silver Paste |
| ||
| Oil Ink | SEIKO, JUJO, DUBUIT, PROELL, NORCOTE UV | ||
7 | Carbon Paste | FUJIKURA, ACHESON ED 581SS, OTTI | ||
8 | 6 Layers Metal dome Type Membrane Switch Structure | Overlay + Spacer + Dome Retainer + Spacer + Circuit Layer+ Back adhesive | ||
9 | 4 Layers Polydome Type Membrane Switch Structure | Overlay + Spacer + Circuit + Back adhesive | ||
10 | Contact Resistance | 0.5-10Ω | ||
11 | Insulation Resistance | ≥10MΩ (100VDC) | ||
12 | Base Material Voltage Durable | ≤ 2000V DC | ||
13 | Bounce Time | ≤ 5ms | ||
14 | Working Current | ≤ 100mA | ||
15 | Working Voltage | ≤ 50VDC | ||
16 | Life | ≥ 1,000,000 times | ||
17 | Key Travel | Flat type: 0.05mm-0.5mm, Tactile Type: 0.1-1.5mm | ||
18 | Working Temperature | -40ºC-+80ºC | ||
19 | Actuation Force | 20-550g | ||
20 | Storage Condition | Temperature: -40ºC~+85ºC ,Humidity: ≤98% RH | ||
21 | PET Circuit Tail Flexible Feature | 180°to any angle | ||
---FAQ---
> Question 1: What kind of membrane switches we can produce?
Super big size membrane switches, membrane keypads, graphic
overlays, membrane circuits, LED backlighting membrane switches,
LGF backlighting membrane switches, EL backlighting membrane
switches, capacitive membrane switches, rubber keypad membrane
switches, FPC circuit membrane switches, PCB circuit membrane
switches, metal back panel membrane switches, Acrylic/PC back panel
membrane switches,, waterproof membrane switch, anti-UV membrane
switch, anti-scratch membrane switch, digital printing membrane
switch etc.
> Question 2: What are our main businesses?
Answer: membrane switches, membrane keypads, rubber keypads,
nameplates, LCD, touchscreen panels, PCBA, FPCA, Electronics
Assembly, Turnkey Project Design and assembly, Total Solution,
Components Soursing and assembly, Suncontracting PCBA
manufacturing, OEM, ODM etc.
> Question 3: What kind of documents do we need for membrane switch, rubber
keypad and PCB assembly?
Answer: Membrane switch: need CorelDraw or Ai or CAD vectograph
drawing;
rubber keypads: need 3D drawing for the structure and graphic
printing drawing;
Gerber file for PCB or FPC, BOM list, test method;
> Question 4: What is our shipping method?
Answer: for small quantity with low weight, we ship by FedEx, UPS,
DHL, TNT express; for big quantity with high weight, we ship by sea
or by plane; We also make shipment as per customer's instruction;
> Question 5: What is our payment terms?
Answer: for the new customer, we will do 50% in advance and the
rest 50% before the shipment. For long term cooperated customers,
we do Monthly Statement;
> Question 6: What is our certification?
Answer: ISO9001:2008;
> Question 7: Can we provide the design service to our customer?
Answer: yes;
> Question 8: Can we provide the material sourcing service? for example
sourcing the electronics components, plastic, metal, rubber,
wireharness etc. parts for customer's PCBA projects?
Answer: yes;
