Force Sensing Resistor (FSR) Overview
A Force Sensing Resistor (FSR), also referred to as a force sensor, is a specialized resistive component whose electrical resistance decreases as applied force increases. The sensor is typically constructed using a polymer-based sheet or printed ink layer containing both conductive and non-conductive particles. When force is exerted on the sensing surface, these particles come into contact with conductive electrodes, resulting in a measurable change in resistance.
Compared to other resistive sensor technologies, FSRs perform reliably in demanding environments and require relatively simple interfacing electronics. Key advantages include their slim profile (under 0.5 mm), low cost, and strong shock resistance. However, FSRs are not suitable for precision measurement applications—typical accuracy is around ±10% or more. Therefore, they are not used in weighing systems but are ideal for detecting force presence or relative changes in pressure.
Applications of Force Sensing Resistors
FSRs are widely used across various industries, including:
– Motion analysis systems
– Automotive sensors
– Resistive touch panels
– Medical devices (e.g., patient monitoring beds)
– Musical instruments
– Industrial measurement systems
Customized Solutions
We offer custom FPC-based PCB capacitive touch sensor keypads and membrane switch panels, tailored to meet specialized requirements across medical, storage, home appliance, and industrial applications. Our solutions support custom sizes, shapes, and functional layouts to match your specific design needs.
Durability & Environmental Resistance
Built with a robust, waterproof, and dust-resistant structure, our products deliver reliable performance even under harsh operating conditions.
High-Quality Materials
We use premium materials such as PET, PC, metal, silicone, and rubber to ensure long-term durability and consistent performance.
Certifications & Reliability
Our products meet international quality standards and hold ISO 9001, ISO 14001, and ISO 13485 certifications, ensuring compliance and reliability for global markets.
Custom Printing & Branding
Using advanced silk-screen printing technology, we provide extensive customization for graphics and branding, helping your product stand out while reflecting your brand identity.
Specification
| Force Range | 10 g – 1000 g |
| Circuit Rating | DC 5V, 1 mA |
| Trigger Force | 10 g (activates at resistance <200 kΩ) |
| Thickness | 0.85 mm |
| Non-Triggered Resistance | >10 MΩ |
| Activation Time | <0.015 ms |
| Hysteresis | ±10% (at 500 g force) |
| Response Time | <10 ms |
| Pressure Mode | Static or dynamic (≤10 Hz) |
| Operating Temperature Range | -40 °C to +85 °C |
| EMI Generation | None |
| ESD Sensitivity | Not sensitive |
| Drift Behavior | Enhanced sensitivity under 10 g trigger force; customizable size range available |
