SMD High Brightness Gold-Plated Metal Dome Membrane Switch With IP67 Waterproof
An SMD (Surface Mount Device) membrane switch is a type of waterproof, tactile user input component that is designed for direct surface mounting onto a printed circuit board (PCB). Here's a more detailed overview:
Construction
Utilizes a multi-layer membrane switch design:
Top graphic overlay - Provides branding, labeling, and visual aesthetics
Flexible membrane - Acts as a waterproof and contaminant-resistant barrier
Conductive switch elements - Printed circuit patterns that detect button presses
PCB attachment layer - Allows for direct surface mounting onto the circuit board
The entire assembly is typically quite thin, often less than 1mm in total thickness
Mounting and Integration
The SMD membrane switch is designed to be directly soldered or adhered onto the surface of a PCB
This enables a very compact, integrated solution where the switch is an integral part of the electronic assembly
Can be automated into the PCB assembly process using standard SMT (Surface Mount Technology) equipment
Applications
SMD membrane switches are commonly used in various compact, waterproof, and rugged electronic devices, such as:
Handheld medical devices
Industrial automation and control panels
Automotive infotainment and control systems
Marine electronics
Consumer electronics and home appliances
Specification:
| Overlay material ---For front or face overlay | ||||||||
| Polyester | Polycarbonate | |||||||
1 Highly versatile for embossing 2 Highly resistant for chemicals 3 Better durability 4 For internal and external use | 1 wide range of the surface finishes and thicknesses 2 More cost-effective 3 For internal and external use 4 many Lexan label choose | |||||||
| 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 or cut out | |||||||
| 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 T4000 or others | ||||||||
| Back plate --- Use in Aluminum ,Polycarbonate ,Acrylic Or PMMA | ||||||||
| Matching color --- PMS or RAL Is best ,CMYK or RGB | ||||||||
| Standard Tolerances :+/-0.2MM | ||||||||
