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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