Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Sensor Type	Resistive Thin-Film
Model Number	FSR402
Active Area Diameter	18.5 mm (0.73 inches)
Force Range	0 to 100 Newtons
Resistance Range	>10 MΩ (no force) to ~200 Ω (max force)
Thickness	0.45 mm (0.018 inches)
Operating Temperature	-40°C to +85°C
Termination Style	Flexible PCB Tail with Gold Plated Contacts
Response Time	< 10 milliseconds
Typical Applications	Robotics, HMI, Medical Devices, Musical Instruments

6 reviews

Anonymous

Mar 29, 2026

Rating: 5/5

Compact and effective

The small footprint is a huge plus. I used two of these to create a balance sensor for a self-balancing robot platform. They react instantly to weight shifts.

Anonymous

Mar 20, 2026

Rating: 4/5

Good for prototyping, not heavy industrial

Works perfectly for our initial prototypes and user interface testing. Just keep in mind the force limits; don't exceed 100N or you risk damaging the element. Great for low-to-mid force applications.

Anonymous

Mar 17, 2026

Rating: 5/5

Easy to use for beginners

As someone new to electronics, I found this very forgiving. A simple voltage divider circuit is all you need to start reading values. The documentation online is also very helpful.

Anonymous

Mar 16, 2026

Rating: 5/5

Perfect for my robotic gripper project

These sensors are incredibly responsive and easy to integrate with an Arduino. The thin profile allowed me to embed them directly into the gripper fingers without adding bulk. Highly recommended for hobbyist robotics.

Anonymous

Mar 13, 2026

Rating: 5/5

Durable and reliable

I've been cycling this sensor thousands of times in a test rig and it hasn't shown any signs of fatigue. The flexible film is surprisingly tough. Excellent value for the price point.

Anonymous

Mar 05, 2026

Rating: 4/5

Great sensitivity, needs calibration

The sensor works well out of the box, but you definitely need to write a calibration routine in your code to get linear readings. Once calibrated, it provides consistent pressure data for our prototype.

5 FAQ

Q: What is the best way to connect this to a microcontroller?

A: The standard method is to use a voltage divider circuit. Connect one leg of the FSR to VCC, the other leg to an analog input pin, and place a fixed resistor (typically 10kΩ) between the analog pin and Ground.

Q: Can this sensor be bent or curved during installation?

A: Yes, the FSR402 is designed to be flexible. It can be bent to fit curved surfaces, provided the bend radius is not smaller than 6mm to avoid damaging the internal circuitry.

Q: What is the expected lifespan in terms of actuations?

A: Under normal operating conditions within the specified force range, the FSR402 is rated for over 1 million actuations. Lifespan may decrease if the sensor is consistently overloaded beyond 100N.

Q: Does the resistance change linearly with force?

A: The relationship between force and resistance is non-linear (inverse logarithmic). However, you can achieve a more linear response in your software by mapping the values or using a specific pull-down resistor value.

Q: Is this sensor waterproof?

A: No, the FSR402 is not waterproof. It should be protected from moisture and liquids. If used in environments where spills might occur, we recommend applying a conformal coating or a protective membrane.

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