Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Model Number	MAX471
Current Range	0 to 3A
Supply Voltage	3.5V to 26V
Output Type	Analog Voltage (1V/A)
Quiescent Current	Typically 6mA
Bandwidth	DC to 120kHz
Accuracy	±3% typical
Operating Temperature	-40°C to +85°C
PCB Dimensions	22mm x 14mm x 4mm
Connector Type	Screw Terminal Block

6 reviews

Anonymous

Mar 29, 2026

Rating: 4/5

Good value, needs calibration

Solid build quality for the price. I noticed a slight offset at zero load, but it was easily corrected in software. The screw terminals are secure and hold wires well.

Anonymous

Mar 15, 2026

Rating: 4/5

Compact and functional

Small footprint fits nicely on my custom PCB prototype. The only reason for 4 stars is that the silk screen printing is a bit faint, but functionality is 100%.

Anonymous

Mar 15, 2026

Rating: 5/5

Reliable current sensing

I've used this in a solar charge controller project. It handles the 3A range smoothly without getting hot. The response time is fast enough for my logging needs.

Anonymous

Mar 12, 2026

Rating: 5/5

Exceeded expectations

Very stable readings even with noisy power supplies. I compared it against a multimeter and the accuracy was within the specified tolerance. Highly recommended.

Anonymous

Mar 06, 2026

Rating: 5/5

Great for learning electronics

Bought this for a university project. The datasheet information matches the performance perfectly. It helped me understand how high-side current sensing works.

Anonymous

Mar 03, 2026

Rating: 5/5

Perfect for Arduino projects

This module works exactly as described. The output voltage scales linearly with the current, making it very easy to interface with my Arduino Uno. Great for monitoring battery discharge rates.

5 FAQ

Q: Can this module measure AC current?

A: No, the MAX471 is designed specifically for DC current measurement only. Using it with AC signals will not provide accurate results.

Q: Does this come with header pins soldered?

A: No, the module typically ships with unsoldered pin headers or screw terminals only, allowing you to choose your preferred connection method.

Q: What is the maximum supply voltage this module can handle?

A: The module operates safely with a supply voltage between 3.5V and 26V. Please do not exceed 26V to avoid damaging the chip.

Q: Is isolation provided between the load and the sensor?

A: No, this is a non-isolated high-side current sensor. The ground of the sensor is common with the load ground. For isolation, consider a Hall-effect based sensor.

Q: How do I calculate the current from the output voltage?

A: The sensitivity is 1V per Ampere. Simply measure the output voltage; for example, 1.5V output corresponds to 1.5A of current flowing through the load.

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