Solid Color Printing Graphic Overlay PCB Membrane Button Switches With Metal Click Domes
PCB circuit graphic overlays are commonly used in a variety of applications, including:
Industrial control and automation equipment
Medical and laboratory instruments
Consumer electronics and appliances
Automotive and transportation systems
Telecommunications and networking equipment
Aerospace and defense applications
The design and materials used for the PCB overlay can vary depending on the specific requirements of the application, such as the operating environment, durability needs, and visual or functional requirements. Common materials used for PCB overlays include polyester, polycarbonate, or other durable plastic films.
Membrane Switch specification:
1)Material---for front or face overlay
Polyester
1.Highly versatile for embossing 2.Highly resistant to chemicals
3.Better durability 4.For internal and external use
Polycarbonate
1.Wide range of surface finishes and thicknesses
2.More cost-effective 3.For internal and external use
2) Embossing--rim embossing pillow embossing dim embpssing
Graphic overlays can be embossed in order to insert domes (tactile), leave space for mechanical keys and provide tactile indications Pedestal embossing
3)Windows ----for display function
1. print colors windows
2.transparent finishes windows
4)Keys/buttons
Tactile keys---with metal dome or poly dome
Non-tactile--silver printing spot
5) Embeded LEDs-
miniature LED, LED colors:white, yellow, orange, green, red, etc.
6)Cable
is an extension of the printed circuit and is used to communicate with your device
7)Types of connector
1.Zero insertion force (ZIF) connector; 2.Female connector; 3.male connector
8) EMI / RFI / ESD Shielding
use an aluminum foil shielding / a clear ITO electrical conductive polyester
9) Adhesive ----mostly used are 3M-double-side glue
10)Backplate---in aluminum, polycarbonate or acrylic
Membrane switch Performance Index:
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