Waterproof Touch Keyboard Membrane Switches Graphic Overlays Moisture Proof

Waterproof Touch Keyboard Overlay Moisture Proof And Long Service Life

Membrane switch is an operating system that integrates button functions, indicating elements, and instrument panels. It consists of four parts: panel, upper circuit, isolation layer and lower circuit. When the membrane switch is pressed, the contacts of the upper circuit are deformed downwards and are in contact with the plates of the lower circuit. After the finger is released, the contacts of the upper circuit bounce back, the circuit is disconnected, and the circuit triggers a signal. Membrane switch has rigorous structure, beautiful appearance and good sealing performance. It has the characteristics of moisture resistance and long service life. Widely used in electronic communication, electronic measuring instruments, industrial control, medical equipment, automobile industry, smart toys, household appliances and other fields.
 
Membrane switch, also known as light-touch keyboard, adopts an integral sealing structure composed of flat multi-layers. The new type of electronic components is a fundamental change in the appearance and structure of electronic products. It can replace the keys of conventional discrete components and perform the tasks of the operating system more reliably.
 
PET Membrane Switch Overlay Description:
 
The main technical indicators
1. Max size: single sided, double sided:600mm * 500mm 　Multi-layer: 400mm * 600mm
2. Processing thickness:0.2mm -4.0mm
3 Copper foil substrate thickness: 18μ(1/ 2OZ ),35μ( 1OZ ),70μ( 2OZ )
4 Common material: FR-4 , CEM-3 , CEM-1, Polytetrachloroethylene,FR-1(94V0,94HB)
5. Light copper,Nickel-plated,Gilded,HAL；Immersion Gold,Antioxidant,HASL,Immersion Tin,etc.

 
Process Capability
 
1. Drilling:The minimum diameter 0.1mm
2. Hole metallization:Minimum aperture 0.2mm,Thickness / aperture ratio 4:1
3. Wire width: Minimum:Gold plate 0.10mm, Tin plate0.1mm
4. Wire spacing: Minimum:Gold plate 0.10mm, Tin plate0.1mm
5. Gold plate: nickel layer thickness:≧2.5μ,Gold layer thickness: 0.05-0.1μm or according to customer requirements
6. HASL: tin layer thickness:≧2.5-5μ
7. Paneling: Line-to-edge minimum distance: 0.15mm hole to edge minimum distance: 0.15mm smallest form tolerance: ± 0.1mm
8. Socket chamfer: Angle: 30 degrees, 45 degrees, 60 degrees Depth: 1-3mm
9. V Cut: Angle: 30 degrees, 35 degrees, 45 degrees Depth: thickness 2/3 Minimum size: 80mm * 80mm
 
 
PET Membrane Switch Overlay Applications:
 
1. The mobile phone
Focuses on the flexible circuit board light weight and thin thickness. Can effectively save the volume of products, easy connection of the battery, microphone, and buttons and into one.
 
2. Computer and LCD screen
Use the one line configuration of flexible circuit boards, and thin thickness. The digital signal into the picture, through the LCD screen
 
3. CD player
Focuses on three dimensional assembly characteristics of flexible circuit boards and thin thickness. The huge CD to carry around

FAQ
 

Q1. What information will I have to provide for price?