RP-L-400 Thin Film Pressure Sensor

The RP-L-400 is a long, flexible thin-film pressure sensor with a 400 mm active length. It detects both static and dynamic pressure by converting applied force into a variable resistance — resistance decreases as pressure increases. The ultra-thin construction (0.35 mm) and fast response time make it suitable for integration into smart textiles, medical devices, bed monitoring systems, and human-interface applications.

The sensor consists of two layers: an upper film with a pressure-sensitive conductive layer and a lower film with a printed circuit. When force is applied to the active area, the layers make contact and complete the circuit, producing a measurable resistance change proportional to the applied pressure.

Key Features

• 400 mm Flexible Sensing Length – Long active area for distributed pressure detection
• Ultra-Thin – 0.35 mm total thickness
• Wide Pressure Range – 20 g to 10 kg (or greater)
• Fast Response – < 10 ms response time
• Low Trigger Force – Activates at < 20 g
• Long Lifespan – > 1 million actuations
• No EMI/ESD Generation – Safe for sensitive electronics

Specifications

• Thickness – 0.35 mm
• Trigger Force – < 20 g (default resistance < 200 kΩ)
• Pressure Range – 20 g to 10 kg+
• Initial Resistance – > 10 MΩ (no load)
• Activation Time – < 0.01 s
• Response Time – < 10 ms
• Frequency – Static and dynamic (up to 10 Hz)
• Drift – < 5 % (2.5 kg, 24 h static load)
• Hysteresis – ±10 % at 1000 g
• Lifespan – > 1 million cycles
• Operating Temperature – −40 °C to +85 °C

Ideal For

• Bed and seat occupancy monitoring
• Smart textiles and wearable pressure sensing
• Medical device interfaces
• Pressure-sensitive switches and triggers

Package Contents

• 1× RP-L-400 thin-film pressure sensor

Resources

• DFRobot Product Wiki