Force Sensing Resistor FSR.
- Size: 1/2″ 12.5mm diameter active area by 0.02″ thick Interlink does have some that are as large as 1.5″x1.5″
- Resistance range: Infinite/open circuit (no pressure), 100KΩ (light pressure) to 200Ω (max. pressure)
- Force range: 0 to 20 lb. (0 to 100 Newtons) apply evenly over the 0.125 sq in surface area
- Power supply: Any! Uses less than 1mA of current (depends on any pullup/down resistors used and supply voltage) The FSR is made of 2 layers separated by a spacer. The more one presses, the more of those Active Element dots touch the semiconductor and that makes the resistance go down
Force Sensing Resistor FSR Specification:
FSR 402 short tail model is a single-zone optimized for use in human touch control of electronic devices such as automotive electronics, medical systems, and in industrial and robotics applications. FSRs are two-wire devices. They are robust polymer thick film (PTF) sensors that exhibit a decrease in resistance with an increase in force applied to the surface of the sensor. Its active area is 12.7mm diameter, and the sensor is available with four connection options. Interlink Electronics’ FSR 400 series is part of the single zone.










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