Waterproof Membrane Switch Light Weight Small Size Long Life For
Electronic Communication
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.
Membrane switch has good waterproof, dustproof, oilproof, harmful
gas corrosion resistance, stable and reliable performance, light
weight, small size, long life, convenient assembly, the panel can
be washed without damage to the characters, rich in color,
beautiful and generous, etc. advantage. Make your products more
contemporary with membrane switches. The main type of membrane
switch The membrane switch panel is a rigid or flexible printed
circuit board as the substrate, with touch or no touch buttons
installed, and then covered with plastic (polycarbonate PC,
polyester PET, etc.) printed with colorful decorative patterns.
Etc.) The electronic component composed of thin film panel, which
integrates switch function and decorative function, is a new type
of human-machine dialogue interface. The connection between the
switch circuit and the whole machine can be completed by welding or
plugging.
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
