Screen Printing Membrane Switch Supplier Silver Conductive Circuit
With 2.54MM Pitch
1. CSI Keyboards
CSI Keyboards is a leading global manufacturer specializing in
custom membrane switches and keypads. They provide extensive design
and manufacturing capabilities, including:
- Graphic Overlays: Custom designs with various aesthetic options.
- Circuitry Options: Choices between etched copper on Kapton flex circuitry or printed
silver circuits.
- Tactile Features: Options for metal dome switches and various embossing techniques.
- Backlighting Solutions: Advanced technologies such as LEDs, light guide film, and
electroluminescence for enhanced visibility.
- Environmental Sealing: Products designed to withstand harsh conditions, including
moisture and chemicals.
2. DuraTech
DuraTech has over 45 years of experience in manufacturing custom
membrane switches for diverse industries, including medical,
automotive, and industrial applications. Their offerings include:
- Custom Keypads: Options for flex copper, silver etched, silicone rubber, and
touch screens.
- Durability Features: Membrane switches that can endure repetitive use and exposure to
cleaning chemicals, enhanced with hard-coated anti-microbial films.
- Engineering Support: On-site assistance for designing the right membrane switch for
specific applications.
3. General Features of Membrane Switches
Membrane switches are versatile components used in various devices,
providing a user interface that is both functional and
aesthetically pleasing. Key characteristics include:
- Long Lifespan: Designed for durability and repeated use.
- Customization: Ability to integrate graphics, tactile feedback, and various
functionalities.
- Environmental Protection: Sealed designs protect against moisture, dirt, and other
contaminants.
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, UV resistance
Polycarbonate:
1.Different surface(Glossy, Matt) and thickness(From 0.12mm~2mm)
2. cost-effective in price
3.For internal and external use
2) Embossing
Rim embossing/pillow embossing/dimple embossing
Graphic overlays can be embossed in order to insert domes/LED,
leave space for mechanical keys/LED and provide tactile indications
and better tactile feeling.
3)Windows(for display function)
1. print different colors windows, As transparent grey/Red/green
window for display
2. Clear/Transparent window for LCD display
2. Matt/semi-transparent window for LED
4)Keys/buttons
Tactile keys---with metal dome or poly dome
Non-tactile--silver printing dots with flat key
5) Embeded LEDs
Small, brilliant lights only about 0.02’’ in height. Avaliable in
several vibrant colors.
LED colors: white, yellow, orange, green, red, or double colors
LED.
6)Cable
It 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, acrylic, PCB
Product index:
Operating voltage: 35V DC
Operating current: 100mA 1W
Contact resistance: < 100 Ohms
Open circuit resistance: ≥ 10MΩ at 100V
Operating temperature: Flat/Metal dome:-20°c to +80°c
Storage temperature: Flat/Metal dome:-40°cto +80°c
Life expectancy Flat type≥5,000,000 times Tactile type≥1,000,000
times
Switch stroke: 0.1 to 0.6mm
Contact bounce: 5 to 30ms
Actuation force tolerance: +/- 20 to 45g
Tactile ratio: FC > 40%
Operating humidity: up to 95% RH
Female, male connector, solder pins and heat seal connectors are
available
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