Medical Device Ffc Keypad Membrane Design Manufacturor With Flexible Cable
Medical membrane switches in more detail:
Key Requirements:
Sterility and Cleanliness: Medical membrane switches must be easy to clean and sterilize to prevent cross-contamination.
Reliability: Mission-critical medical devices require highly reliable membrane switch interfaces that can withstand frequent use.
Durability: Switches need to maintain functionality even after exposure to harsh cleaning agents and disinfectants.
Tactile Feedback: Intuitive and responsive tactile feedback is important for medical personnel interacting with the device.
Construction:
Specialized Materials: Medical membrane switches often use materials like silicone rubber, polyester, and polycarbonate that are resistant to chemicals and easy to clean.
Sealed Design: The switch assembly is typically sealed to prevent ingress of liquids, dust, and other contaminants.
Antimicrobial Coatings: Some medical membrane switches feature antimicrobial surface treatments to inhibit the growth of bacteria.
Applications:
Medical Equipment: Membrane switches are used extensively in medical devices like patient monitors, infusion pumps, surgical equipment, and diagnostic instruments.
Hospital Environments: Membrane keypads are also found in nurse call stations, medication dispensing systems, and hospital beds.
Home Healthcare: Medical membrane switches are used in home-based medical devices like blood pressure monitors and glucose meters.
Specification:
| Overlay material ---For front or face overlay | ||||||||
| Polyester | Polycarbonate | |||||||
1 Highly versatile for embossing | 1 wide range of the surface finishes and thicknesses | |||||||
| Embossing --- Graphic overlay or up circuit can be embossed in order to insert metal stainless steel domes for good tactile when press .Leave space for mechanical keys and provide tactile indications | ||||||||
| Pedestal embossing | Rim embossing | Pillow embossing | Dim embossing | |||||
| Windows or LCD --- For display functions | ||||||||
| Printed colors windows such like red ,black and so on | Transparent finishes windows | |||||||
| Keys | ||||||||
| Tactile Keys :witch metal domes or Poly domes ,Metal dome with different diameter and pressure kinds | Non-tactile keys: printed silver spot on the circuit | |||||||
| LEDs ---Miniature LEDs ,LED colors :white ,Green ,Red ,Blue ,Yellow ,Orange and others | ||||||||
| EL and Sensors or inductors --- EL can be light any place where where you like ,and sensors can be used as LEDs | ||||||||
| Cables --- is extension of circuit and communication with your device | ||||||||
| Screen printing conductive silver cable | Copper plated cable /Polyimide or FPC | PCB board | ||||||
| Types of connector --- 1 Zero insertion force(ZIF) with 0.3MM ,0.5MM ,1.0MM,1.25MM pitch ;2 Female connector with 2.54MM pitch; 3 Male connector | ||||||||
| Shielding --- For protection function | ||||||||
| Gasket seal/Waterproof :protect the conductors against from the humidity and splashes | EMI/RFI/ESD Shielding: use an Aluminum foil shielding /clear ITO electrical conductive polyester to protect | |||||||
| Rear Adhesive --- Mostly use the 3M double-side mounting glue brand of USA. Also accepted others such like Lohmann and others | ||||||||
| Back plate --- Use in Aluminum ,Polycarbonate ,Acrylic Or PMMA | ||||||||
| Matching color --- PMS or RAL Is best ,CMYK or RGB also can be ok if you can supply PMS Or RAL | ||||||||
| Standard Tolerances :+/-0.2MM | ||||||||
Electrical properties
| Operating voltage | ≤ 50VDC |
| Operating Current | ≤ 100mA |
| contact resistance | 0.5 ~ 10Ω |
| Insulation resistance | ≥ 100MΩ (100VDC) |
| the substrates withstand voltage | 2kDVC |
| rebound time | ≤ 6ms |
| loop resistance | 50Ω, 150Ω, 350Ω third gear, or user needs identified |
| insulating ink withstand voltage | 100VDC |
Mechanical behavior
| reliability of service life | > 1 million times |
| closed displacement | 0.1 ~ 0.4mm (tactile) 0.4 ~ 1.0mm |
| Kin standard for force | 15 ~ 750g force |
| conductive silver paste migration | in 55 ° C, a temperature of 90%, after 56 hours, the second-tier of 10MΩ/50VDC |
| Silver online no oxidation, no impurities | |
| Pastes linewidth ≥ 0.3mm, the minimum interval of 0.3mm, line burr <1/3, the line gap <1/4 linewidth | |
| pin spacing standard 2.54 2.50 1.27 1.25mm | |
| the pinout anti curvature, d = 10mm Ganggun pressure roll 80 times line constantly. | |
Environmental performance
| Operating Temperature | 20 °C ~ +70 °C |
| storage temperature | -40 ° C to +85 ° C temperature 95% ± 5% |
| large gas pressure | 86 ~ 106KPa |
