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Round Force Sensor – FSR402
The FSR402 is a round force-sensitive resistor (FSR) that detects physical pressure, squeezing, and weight. As more force is applied, the sensor's resistance decreases, producing a variable analog output. While excellent for general force detection applications, it is not recommended for precise or linear force measurements.
Key Features:
- Sensor Type: Force Sensitive Resistor (FSR)
- Shape: Round sensing area
- Force Range: 0.2N – 20N (or 0 – 5000g)
- Output: Analog (Resistance decreases with pressure)
- Durability: Tested up to 10 million actuations
- Thickness: Less than 0.25mm
- Response Time: Less than 1ms
- Recovery Time: Less than 15ms
Connections:
| Parameter | Value |
|---|---|
| Operating Voltage | 3.3V – 5V DC |
| Force Sensitivity Range | 0.2N – 20N |
| Force Resolution | Continuous (Analog) |
| Analog Output Range | 0–650 (typical ADC value) |
| Thickness | < 0.25mm |
| Precision | ±2.5% (over 85% of measuring range) |
| Repeatability | < ±5.8% (50% load) |
| Weight | 9.4g |
Applications:
- Robotics (gripper arm sensing, robot skin)
- Touch pads and interactive surfaces
- Medical device pressure sensing
- Automotive seat occupancy detection
- Aerospace pressure force distribution measurements
- Airbag force measurement
📄 View Verified FSR402 Datasheet (PDF)
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