The aircraft instrument panel membrane switch is a non-mechanical contact switch utilised in avionics equipment. Characterised by its lightweight, slim profile and dependable performance, it meets the operational demands of aircraft in complex environments.
The service life of membrane switches for aircraft instrument panels is typically measured primarily by the number of press cycles. Taking into account aviation-grade usage standards and material properties, their general service life exceeds 5 million press cycles, significantly surpassing that of conventional membrane switch types (such as flat-type at 1 million press cycles, dome-type at 1 million press cycles, and spring-loaded-type at 500,000 press cycles).
High reliability: Utilising aerospace-grade materials and meeting stringent certifications such as MIL-STD-810, it maintains stable performance under extreme temperatures, severe vibration, intense shock, and high radiation environments. Circuit design typically incorporates redundancy, with backup circuits for critical paths to ensure reliable execution of essential functions.
Service life: Military membrane switches must withstand extreme environments, with testing criteria including high temperatures (55±2°C for 72 hours) and low temperatures (-40±3°C for 16 hours).
Sealing performance: The integral sealed structure provides waterproofing, dustproofing, and resistance to harmful gas corrosion, making it suitable for complex environments such as aircraft.
Operating Temperature: Standard models range from -20°C to 70°C, while military or high-temperature variants extend from -40°C to 125°C.
Highly resistant to interference: Incorporates EMI/RFI shielding design to effectively prevent electromagnetic interference, ensuring stable transmission of switch signals and avoiding disruption to other electronic equipment on board the aircraft.
High degree of customisation: Tailored to meet specific aircraft instrument panel requirements, such as incorporating night vision-compatible backlighting and explosion-proof construction, to fulfil diverse operational and display specifications.
Prioritise aerospace-grade materials: such as polyimide (PI) film and specialised silicone rubber to meet lightweight and weather-resistant requirements.
Verify protection rating: Select IP44 (splash-proof) or higher based on actual installation location (e.g., cockpit, cabin).
Customised design: Collaborate with suppliers to tailor solutions for specific instrument panel layouts, key dimensions, and actuation force requirements.
