Shenzhen Lunfeng Technology Co., Ltd
| Payment Terms | TT/telegram transfer |
| Supply Ability | 500000 Piece/Pieces per Month |
| Delivery Time | normally 2-4 weeks, can be discussed |
| Packaging Details | PE bag/foam/carton, as customer's request |
| Material | PET, Polyester(PET), 0.15mm MATTE PET |
| Rear adhesive | 3M9448 3M adhesive |
| ColorS | Pantone/ RAL color, yellow, gray |
| Feature | matte surface, silver circuit cables |
| Connector | 2.54 mm Pitch, black plastic housing |
| Key | tactile keys , metal domes, |
| LED | color Leds, NO LGF film |
| Window | NO LCD window, one punch holes |
| Brand Name | Lunfeng/Customer's brand |
| Model Number | LFZDX101 |
| Certification | ISO9001:2015, SMETA 4P |
| Place of Origin | Shenzhen, Guangdong, China |
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Product Specification
| Payment Terms | TT/telegram transfer | Supply Ability | 500000 Piece/Pieces per Month |
| Delivery Time | normally 2-4 weeks, can be discussed | Packaging Details | PE bag/foam/carton, as customer's request |
| Material | PET, Polyester(PET), 0.15mm MATTE PET | Rear adhesive | 3M9448 3M adhesive |
| ColorS | Pantone/ RAL color, yellow, gray | Feature | matte surface, silver circuit cables |
| Connector | 2.54 mm Pitch, black plastic housing | Key | tactile keys , metal domes, |
| LED | color Leds, NO LGF film | Window | NO LCD window, one punch holes |
| Brand Name | Lunfeng/Customer's brand | Model Number | LFZDX101 |
| Certification | ISO9001:2015, SMETA 4P | Place of Origin | Shenzhen, Guangdong, China |
| High Light | NO LGF Film Flat Membrane Switch ，Color Leds PET Membrane Switch ，Flat PET Membrane Switch | ||
OEM 3M Adhesive Membrane Switch Keypad, Flat Membrane Switch
Components of a Membrane Switch
Graphic Overlay
Graphic overlays are a thin film with a printed layer that acts as the product’s top surface. They can be decorative or simple in design. You can emboss graphic overlays, or the graphic can help indicate switch locations.
Keypads
Keypads are a set of buttons arranged in a block that become the interface of products. Keypads offer a wide variety of options to achieve the desired user experience. Common keypad materials are:
Compression-molded elastomer materials
Hard keys mounted in a bezel
A combination of hard key and elastomers
Adhesive
Pressure-sensitive adhesives are thin layers of tape that adhere domes to the circuit. Adhesives can help protect the switch from debris, provide a moisture barrier, or other environmental factors.
Metal Domes
Metal domes are normally-open contacts that, when pressed, complete the circuit. Metal domes, also known as tactile domes, create tactile feedback for the user and come in a wide variety of sizes, styles, and forces. Domes have life ratings of up to 10 million presses. Snaptron can produce custom domes with minimal lead times.
Spacers/Retainers
A retaining pocket can hold a dome in position without the need for an adhesive layer. A spacer layer provides space for the dome under the graphic overlay. It can also incorporate venting channels that allow air to move under the graphic overlay when pressing various switches. Spacers eliminate the need to vent each switch pocket through the circuit board.
[tactile domes with spacer]
Circuit
The circuit can be single-sided, double-sided, or even flexible in some applications, also known as a flex circuit. Domes are positioned on the circuit pads, and when depressed, create contact closure.
Metals domes are placed on top of the contact padsMetal domes are just one of the many components of a switch that together make a complex human-machine interface.
Applications:
Our Advantage:
| Items | Silver Printed Circuit | Copper Etched FPC Circuit |
| Material | PET (Polyester) | Copper |
| Conductor | Printed silver | Copper |
| Contact Fingers | Silver and Carbon | Gold plated |
| Contact Buttons Pads | Silver | Gold plated |
| Life & Reliability | normal | good |
| Stability | normal | good |
| Resistance | low | Very low |
| Cost | low | high |
| Lead Time | 2-3 days | 7-10 days |
| Pitch | 0.5mm (not suggested), 1.0mm,1.27mm, 2.54mm | 0.5mm, 1.0mm,1.27mm, 2.54mm |
| 1. Electrical Properties | Membrane Switch | ||
| Electrical Level: | 35V(DC), 100mA,1W | ||
| Contact Resistance: | 10Ω~500 Ω | ||
| Insulation Resistance: | 100MΩ/100V | ||
| Dielectrics Voltage-resistance: | 250VRms(50~60Hz 1min) | ||
| Chattering Time: | ≤ 5ms | ||
| Life Time: | Flat type ≥ 5,000,000; Tactile type ≥ 1,000,000 | ||
| Tail Folding: | R>1,180 | ||
| 2. Mechanical Properties | |||
| Operating Force: | Flat type 57~284g (2~10oz); Tactile type 170~397g(6~14oz) | ||
| Switch Stroke: | Flat type 0.1~0.5mm; Tactile type 0.6~1.5mm | ||
| 3. Environmental and Storage Conditions | |||
| Operation Temperature: | -40°C ~ +80°C | ||
| Storage Temperature: | -40°C ~ +80°C | ||
| Humidity: | 40°C, 90%~95%, 240 hours |
FAQ:
Q1: Are you a factory or trade company?
A : Lunfeng is membrane switch/ graphic overlay manufacturer/factory. We pecialize in memrbane switch for 26 years.
Q2 : Is my switch file safe if I send it to you for manufacturing?
A : We respect customer's design authority and will never manufacture membrane switch/ graphic overlay for someone else without
your permission. NDA is acceptable.
Q3 : Can you copy membrane switch/ graphic overlay samples without file?
A : Yes, we can clone membrane switch/ graphic overlay according to your samples.
Q4 : What payment do you accept ?
A : TT/ Western Union.
Q5 : What's your shipping way ?
A : 1. We have our own forwarder to ship goods by DHL, UPS, FEDEX, TNT, EMS.
2. If you have your own forwarder, we can cooperate with them.
Q6 : How about the MOQ?
A : 1 pcs, but normally 5 pcs samples for memrbane switch, 10 pcs for membrane overlay.
Q7 : What's your main market?
A : Europe, USA, Brazil, Russia, Turkey, Iran, Austrialia, Singapore...
Company Details
Business Type:
Manufacturer,Importer,Exporter,Seller
Year Established:
1995
Employee Number:
200~300
Ecer Certification：
Verified Supplier
Shenzhen Lunfeng Technology Co., Ltd. (“Lunfeng”) was established in 1995, mainly engaged in design, production, sale and service of all kinds of membrane switches, membrane overlay, graphic overlay, PC, PVC, PET and aluminum plates, acrylic lenses, metal nameplate, touch screen panel,... Shenzhen Lunfeng Technology Co., Ltd. (“Lunfeng”) was established in 1995, mainly engaged in design, production, sale and service of all kinds of membrane switches, membrane overlay, graphic overlay, PC, PVC, PET and aluminum plates, acrylic lenses, metal nameplate, touch screen panel,...
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