FSR402 Resistive Pressure Sensor

The FSR402 (Force Sensing Resistor) is a thin, flexible, and robust sensor that is used to detect physical pressure, squeezing, and weight. The resistance of the FSR402 decreases as the force applied to its surface increases, making it ideal for applications where varying pressure needs to be measured. This sensor is commonly used in user interfaces, musical instruments, medical devices, and robotics.

Key Features:

• Sensing Area: 0.5 inches in diameter
• Force Sensitivity Range: 0.2N to 20N (approximately 20 grams to 2 kilograms)
• Thin and Flexible: Can be easily integrated into various designs
• Robustness: Durable and capable of withstanding repeated use
• Interchangeable: Easy to replace in case of damage

Technical Specifications:

• Force Sensitivity Range: 0.2N to 20N
• Conductive Material: Polymer thick film (PTF)
• Resistance Range: >10MΩ (no pressure), ~1.8kΩ (max pressure)
• Activation Force: 0.2N (minimum force required to begin sensing)
• Linearity Error: ±3% (measured from 20% to 80% of the sensor’s force range)
• Repeatability: ±2% of full scale (constant load, temperature, and humidity)
• Hysteresis: ±10% of full scale
• Operating Temperature: -30°C to +70°C
• Durability: >10 million actuations

Applications:

• User Interfaces: Ideal for creating touch-sensitive surfaces and pressure-sensitive buttons.
• Medical Devices: Used in devices that require pressure measurement, such as hospital beds and patient monitoring systems.
• Robotics: Applied in robotic grippers and touch-sensitive robotic skin.
• Musical Instruments: Integrated into electronic musical instruments to provide pressure-sensitive input.
• Gaming: Used in gaming controllers and other interactive devices to detect force and pressure.
• Wearable Technology: Incorporated into wearable devices to monitor pressure and touch.