Interlink Electronics

Product details

The FSR UX 402 Short force sensor can detect and measure pressure from 0.5N to 150N while operating solo or as part of an array. A dependable workhorse, the robust sensor can withstand millions of actuations as well as harsh, dirty environments and extreme temperatures, making it a great option for applications in industries like robotics, medicine, automotive, and the IoT.

Highlights:

12.7 mm diameter active area
30.30 mm length (with solder tabs)
Sensing range from 0.5N to 150N
Ultrathin form factor
Easily customizable

Category Overview

Force Sensing Resistor (FSR) Sensor Series

Force Sensing Resistor technology from Interlink is designed for teams that need repeatable pressure input with low profile integration options.

Interlink invented the Force Sensing Resistor and brought it to market in 1985. The architecture uses a printed interdigitated circuit and conductive layer that decreases resistance as applied force increases, enabling predictable, analog force interpretation in compact form factors.

The standard FSR portfolio includes high-performance options such as the UX 400 series (0.5 N to 150 N), the X 400 series (0.3 N to 50 N), and the original 400 series (0.2 N to 20 N). This range supports design-in across medical interfaces, industrial controls, robotics, and consumer electronics.

For rapid evaluation, Interlink also offers hardware development kits with sensor variations, overlays, and adhesive options so teams can validate force behavior before committing to production geometry and stack-up decisions.

Piezoresistive architecture with pressure-dependent resistance change
Wide dynamic sensing range options across UX 400, X 400, and 400 series
Low-profile construction for embedded interfaces and constrained assemblies
HDK pathway for fast proof-of-concept and integration validation

FSR UX 402 Short

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Force Sensing Resistor (FSR) Sensor Series

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