SKU: SENS-0704
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RP-C18.3-LT Force Sensitive Resistor (20g-6kg) - Flexible Thin-Film Sensor

₹186.00 (Inclusive of all taxes)
Out of Stock

The RP-C18.3-LT is a flexible thin-film force-sensitive resistor (FSR) providing variable resistance output from 500KΩ to 500Ω across a 20g to 6kg force range. Its ultra-thin 0.4mm profile and flexible construction make it ideal for integration into pressure-sensing applications with microcontrollers like Arduino, Raspberry Pi, and ESP32.

Features

  • High-sensitivity thin-film resistive technology for precise force detection.
  • Wide measurement range from 20 grams to 6 kilograms.
  • Ultra-thin 0.4mm profile with flexible, conformable design.
  • Fast 1ms response time for dynamic pressure sensing.
  • Simple variable resistance output (500KΩ to 500Ω) for easy ADC interfacing.

Out of stock

Description

The RP-C18.3-LT Force Sensitive Resistor operates on the principle of piezoresistivity, where applied force decreases the electrical resistance across its active sensing area. This change is highly repeatable, allowing for the translation of mechanical pressure into a measurable analog voltage signal when used with a simple voltage divider circuit.

Constructed with a durable, flexible polymer substrate, the sensor maintains performance across a wide range of environmental conditions. Its minimal hysteresis and fast response time enable accurate detection of both static and dynamic force events, suitable for embedded systems and industrial control interfaces.

Key Features

  • Advanced thin-film piezoresistive sensing element for consistent performance.
  • Engineered for a broad actuation force range from light touch (20g) to significant load (6kg).
  • Flexible and ultra-thin (0.4mm) form factor allows for installation in constrained spaces.
  • Robust construction ensures long-term reliability and stable output characteristics.
  • Optimized performance-to-cost ratio for high-volume integration and prototyping.
  • Low hysteresis design provides improved measurement accuracy and repeatability.
  • Compatible with standard 3.3V and 5V logic systems for straightforward microcontroller integration.

Applications

  • Robotic gripper and end-effector tactile feedback systems.
  • Human-machine interface (HMI) touch panels and control surfaces.
  • Biomechanical gait analysis and pressure mapping in wearable devices.
  • Industrial process monitoring for assembly line pressure verification.
  • Prosthetic limb and rehabilitation equipment force sensing.

Technical Specifications

ModelRP-C18.3-LT
Sensing PrincipleThin-Film Piezoresistive
Force Range20g - 6kg
OutputVariable Resistance (500KΩ - 500Ω)
Actuation Force20g (Resistance ~10MΩ)
Thickness0.4 mm
ShapeFlexible
Response Time1 ms
Hysteresis≤ +10%

Frequently Asked Questions

What is the output signal of the RP-C18.3-LT FSR and how do I interface it with an Arduino?

The RP-C18.3-LT outputs a variable resistance that decreases with applied force, ranging from approximately 500KΩ (no load) to 500Ω (6kg). To interface with an Arduino, connect the FSR in a simple voltage divider circuit with a fixed resistor (e.g., 10KΩ) between an analog input pin and ground. The Arduino's ADC will read the resulting voltage, which you can map to a force value through calibration.

What is the minimum detectable force, and how is the 'actuation force' of 20g defined?

The sensor's specified actuation force of 20 grams is the threshold at which a measurable decrease in resistance begins. At this force, the resistance is approximately 10MΩ. The sensor provides a usable analog signal change for forces at and above this threshold, with sensitivity increasing up to its maximum rated load of 6 kilograms.

Can this flexible FSR be used for dynamic or impact force measurement?

Yes, the RP-C18.3-LT's fast 1ms response time makes it suitable for detecting dynamic force changes and short-duration impacts. However, for quantifying high-speed impact energy, specific calibration for the event waveform is required. Its low hysteresis also helps in accurately tracking force application and release cycles in dynamic applications.

Package Includes

  • 1 x Force Sensitive Resistor RP-C18.3-LT (20g-6kg)