Electrical Components
 

Electronic Components

Pressure-Sensitive Membrane Switch and Sensor

Features
Pressure-Sensitive Membrane Switch and Sensor Features
  • Contact resistance varies continuously in relation to applied pressure(Fig.1)
  • Simple structure
  • Lightweight and thin analog input devices can be realized
  • Highly durable and heat-resistant
Applications
  • Analog signal input switches that use pushing force to control operation
  • Pressure sensors that detect relative pressure and force
    Examples: Sheet sensors, writing pressure sensors, and sound control by keystroke
Specifications
Structure
Pressure-Sensitive Membrane Switch and Sensor - Structure

Dimensions
Structure Dimension Comments
Electrode sheet Area Within 400×400mm Sensitivity variation: within ±15%
Thickness 75 to 150μm
Spacer Thickness 30 to 150μm
Contact pad Inside Circular pad: 8 to 12mm in internal diameter
Rectangular pad: 5 to 8mm in spacer interval
Outside Spacer diameter or spacer interval: 8mm or larger


Materials
Structure Material Comments
Electrode sheet PET, PEN *
Spacer PET, PEN, and printed spacer
Circuit electrode Printed circuits made of silver or carbon paste
Pressure-sensitive electrode Printed circuits made of pressure-sensitive paste

* PET: Polyethylene terephthalate PEN: Polyethylene naphthalate