Products for USB Sensing and Control
Products for USB Sensing and Control


Unit 1 - 6115 4 St SE
Calgary AB  T2H 2H9
+1 403 282-7335

Interlink Electronics 0.5″ Circular 20N FSR

ID: 3104_0
Recommended for new designs: Phidgets Inc. is not the original manufacturer for this product, but we intend to sell it (or a similar replacement with a compatible form, fit and function) for as long as it is available from the supplier.

This medium-sized Interlink FSR is 0.5" in diameter and measures up to 20 N.


Quantity Available: 384

Qty Price
5 $7.20
10 $6.90
25 $6.75
50 $6.68
100 $6.60

The Interlink Force Sensing Resistor has an active sensing area of 0.5” (12.7mm) to sense applied force.

Force Sensing Resistors (FSRs) are very thin, robust, polymer thick film (PTF) devices that decrease in resistance when increased pressure is applied to the surface of the sensor. FSRs are not a load cell or strain gauge devices though they have many similar properties.

They are more appropriate for qualitative rather than precision measurements.


You can use a voltage divider to connect this sensor to your InterfaceKit or Hub. See the Connection & Compatibility tab for more details.

Voltage Dividers

This force-sensitive resistor works best when connected to a voltage divider so you can customize the minimum and maximum voltage drop produced by the sensor with the expected minimum and maximum amount of pressure on the sensor. For more details on how to configure the voltage divider, take a look at the User Guide for the divider you choose.

Image Part Number Price
1121_0 $7.00
1134_0 $15.00

Product Specifications

Sensor Properties
Sensor Type Force Sensitive Resistor
Controlled By Voltage Divider
Force Min 1 N
Force Max 20 N
Pressure Min 10.3 kPa
Pressure Max 1 MPa
Repeatability Error Max ± 2 %
Hysteresis Max 10 %
Long-Term Drift Max 5 %
Response Time Max 3 μs
Temperature Sensitivity Max 0.15 % per °C
Physical Properties
Sensing Area 126.7 mm²
Lifespan 10 million actuations
Operating Temperature Min -30 °C
Operating Temperature Max 70 °C
Customs Information
Canadian HS Export Code 8423.90.00
American HTS Import Code 8423.90.10.00
Country of Origin CN (China)


Code Samples

Example Options


				Make your selections to display sample code.

Interlink FSRs:

Product Sensor Properties Physical Properties
Image Part Number Price Force Min Force Max Sensing Area
3103_0 $6.50 1 N 20 N 19.6 mm²
3104_0 $7.50 1 N 20 N 126.7 mm²
3105_0 $10.00 1 N 20 N 14.5 cm²

Flexiforce FSRs:

Product Sensor Properties Physical Properties
Image Part Number Price Force Min Force Max Sensing Area
3100_0 $22.75 0 N 4.4 N 71.3 mm²
3101_0 $22.75 0 N 111.1 N 71.3 mm²
3102_0 $22.75 0 N 444.8 N 71.3 mm²