FSR 400 Series

The Original Force Sensing Resistor^®

Interlink Electronics FSR™ 400 series is part of the single zone Force Sensing Resistor™ family. Force Sensing Resistors, or FSRs, are robust polymer thick film (PTF) devices that exhibit a decrease in resistance with increase in force applied to the surface of the sensor. This force sensitivity is optimized for use in human touch control of electronic devices such as automotive, electronics, medical systems, and in industrial and robotics applications.

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Key Features:

Dynamic sensing range spans from ∼0.2 N to 20 N
Able to withstand millions of actuations
Ultrathin form factor
Customizable for a wide range of applications
Cost effective and easy to integrate

Actuation Force
- ≈0.2N min
Force Sensing Range
- ≈0.2N – 20N
Force Repeatability Single Part
- ±2%
Force Repeatability Part to Part
- ±6% (single batch)
No-Load Resistance
- >10 MΩ
Hysteresis
- +5% (RF+ – RF-)/RF+
Long Term Drift at 1kg for 35 days
- < 5% log₁₀(time)

*NOTES

Specifications are derived from average measurements obtained at 1,000 grams and are given as (one standard deviation/mean), unless otherwise noted. Measurement is dependent on actuation interface, mechanics, and measurement electronics.

Operating Temperature Performance

Cold: -40°C after 1 hour
- -5% resistance change
Hot: +85°C after 1 hour
- -15% resistance change
Hot Humid: +85ºC 95RH after 1 hour
- +10% resistance change

Storage Temperature Performance

Cold: -25°C after 120 hours
- -10% resistance change
Hot: +85°C after 120 hours
- -5% resistance change
Hot Humid: +85ºC 95RH after 240 hours
- +30% resistance change

Standing Load Durability

2.5kg for 24 hours
- -5% resistance change

*NOTES

Specifications are derived from measurements obtained at 2,500 grams force, unless otherwise Measurements are dependent on actuation interface, mechanism and measurement electronics.

Work with our team of experts to customize Interlink's FSR sensors for almost any application you can imagine. Our host of in-house competencies—including materials science, hardware engineering, software and firmware engineering, and manufacturing—gives us the ability to assist and advise from design to delivery. Here are just a few of our specialties: