Square Force Sensor (40x40mm, 20g-10kg, Thickness: 0.45mm)

The Square Force Sensor is an ultra-thin flexible pressure sensor featuring a 40x40mm active sensing area with a broad 20g to 10kg detection range. It is ideal for students, makers, and engineers developing robotic grippers, smart seating, medical devices, and pressure-mapping interfaces.

Ultra-thin flexible film construction

Constructed from durable polymer film with nanometre-scale pressure-sensitive layers, the sensor is just 0.45mm thick. Its flexible profile allows it to fit onto flat or contoured surfaces while maintaining quick response to applied force.

Dimensions and layout specifications

The sensor features a 40mm by 40mm square active sensing zone with short terminal legs for easy integration into compact assemblies. Consult the dimensional diagram for exact component spacing and mechanical planning.

Variable resistance response characteristics

When pressure is applied to the active area, the internal circuit connects through the sensing layer, decreasing output resistance from an initial open value greater than 10MΩ. It reliably tracks both static loads and dynamic force variations at frequencies up to 10Hz.

Wide dynamic sensing range

Capable of triggering at a light 20g threshold, the sensor scales continuously up to 10kg of applied force. This broad measurement span makes it suitable for diverse applications ranging from sensitive touch switches to seat occupancy monitoring.

Durable and stable operation

Engineered for demanding environments, this sensor is rated for over 1 million actuations across an operating temperature range of -40°C to +85°C. It operates cleanly without generating electromagnetic interference or electrostatic discharge.

Package contents

The package includes one RP-S40-ST square thin-film flexible pressure sensor.

Downloads & documentation

• Product wiki (DFRobot)