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FlexiForce A101 Sensor

FlexiForce A101 Sensor

Smallest sensor ideal for integrating into OEM applications. Available direct from Tekscan (below) or at Digikey and Mouser.

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FlexiForce A101 Sensor


FlexiForce™ A101 Sensor

Digikey Mouser

The A101 is our smallest sensor optimized for high volume manufacturing and ideal for embedding into products. The 2-pin sensors are currently our smallest standard sensor.

The sensors can measure up to 10 lbs.* The dynamic range of this mini force sensor can be modified by changing the drive voltage and adjusting the resistance of the feedback resistor (see "How to Adjust the Force Range" within the Electronics tab on the left).

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A101 Force Resistance Conductance Chart

  • Sensor acceptance criteria ±40% of nominal
  • Sensor resistance measured 20 seconds after applied load
  • Sensor loaded through a polycarbonate puck equal to 68% (0.0123 in2) of total active area
  • Sensor was not attached to any drive circuitry

Specifications & Performance

Sensor Thickness: 0.203 mm (0.008 in.)
Force Sensor Length: 15.7 mm
Sensing Size (Diameter/Width):  3.8 mm
Standard Force: 

18 N
44 N

Temperature Range (Low): -40 °C
Temperature Range (High):  60 °C
Connector: 2-pin Male Square Pin
Substrate: Polyester
Pin Spacing: 2.54 mm (0.1 in.)
Notes:  Tekscan's smallest standard FlexiForce sensor

Typical Performance

Linearity (Error): < ±3% of Full Scale (Line drawn from 0 to 50% load)
Repeatability: < ±2.5% (Conditioned Sensor, 80% of Full Force Applied)
Hysteresis: < 4.5 % of Full Scale (Conditioned Sensor, 80% of Full Force Applied)
Drift: <5% / logarithmic time (Constant Load of 111 N (25 lb))
Response Time: < 5 µsec (Time required for the sensor to respond to an input force; Impact load - recorded on Oscilloscope)
Operating Temperature:  -40°C - 60°C (-40°F - 140°F)


≥ 3 million actuations (Perpendicular load, room temperature, 22 N (5 lb))

Temperature Sensitivity:

0.36%/°C (± 0.2%/°F) (Conductive heating)

All data above was collected utilizing an Op Amp Circuit. If your application cannot allow an Op Amp Circuit, consult the FlexiForce Integration Guide, or contact a FlexiForce Applications Engineer.



Tekscan Recommends Using an Op Amp Circuit

If your application cannot allow an Op Amp Circuit, consult the FlexiForce Integration Guide, or contact a FlexiForce Applications Engineer. If you prefer to build your own electronics, we recommend using a circuit similar to the diagram below. This will provide linear data, making it easier to calibrate the sensor.

A101 circuit diagram

How to Adjust the Force Range:

*In order to measure higher forces, apply a lower drive voltage (-0.5 V, -0.25 V, etc.) and reduce the resistance of the feedback resistor (1kΩ min.) To measure lower forces, apply a higher drive voltage and increase the resistance of the feedback resistor.

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The FlexiForce™ Prototyping Kit allows you to efficiently progress your FlexiForce-embedded design through advanced integration phases. 

Note: The FlexiForce Prototyping Kit includes an open-source software program designed specifically to help with the sensor integration process. Some code programming experience is necessary. 

New and improved replacement for the OEM Development Kit.

Available direct from Tekscan or at Mouser.com.

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Optimize FlexiForce sensor linearity and repeatability with these delrin load concentrators, or "pucks." Available direct from Tekscan (below) or at Digikey and Mouser.

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