AH3503 Linear Hall Effect Sensor
10 Pack - ($0.49 ea)
$4.99 NZD
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$4.99 NZD
AH3503 Linear Hall Effect Sensor
Stock amount:
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Urban $40
Rural $60
The AH3503 is a linear analog Hall Effect sensor designed for accurate magnetic field measurement in a compact TO-92 package. It outputs a ratiometric analog voltage proportional to magnetic field strength, making it ideal for RPM sensing, motor control, position sensing, robotics, and Arduino projects.
- Linear analog Hall Effect output
- Compact TO-92 package
- Wide 3.5V – 6.6V operating range
- Fast response with low noise output
- Compatible with Arduino, ESP32 & Raspberry Pi ADCs
- Ideal for RPM, throttle & position sensing
Quick Wiring
1
Face the flat side toward you
The marked "503 118" side should face toward you when identifying pins.
2
Connect VCC
Pin 1 → 3.5V–6.6V supply voltage.
3
Connect GND
Pin 2 → Ground.
4
Read analog output
Pin 3 → Analog input (A0 on Arduino).
Please note: This is a linear analog Hall sensor — not a digital on/off Hall switch.
Specifications
ModelAH3503
Output TypeLinear Analog (Ratiometric)
Operating Voltage3.5V – 6.6V
Output Voltage0.1V – 4.9V
Zero Field Output~2.5V @ 5V supply
Sensitivity15.25mV/mT typical
Linear Range±80mT
PackageTO-92A
Lead Pitch1.27mm
Operating Temperature-40°C to +85°C
Please note: Output voltage changes proportionally with magnetic field strength and supply voltage.
Pinout
1
Pin 1 → VCC
Connect to 3.5V – 6.6V supply.
2
Pin 2 → GND
Connect to common ground.
3
Pin 3 → OUT
Connect to analog input pin.
4
Calibrate at your supply voltage
Midpoint output changes depending on VCC.
Common Uses
RPM sensing for motors & fans
E-bike & e-scooter throttle systems
Magnetic position sensing
BLDC motor commutation
Arduino analog magnetic field projects
Robotics & automation feedback systems
Please note: The flat face of the package is the active sensing side.
Common Questions
Is this a digital Hall sensor?
No — the AH3503 outputs a continuous analog voltage proportional to magnetic field strength.
Will this work with Arduino?
Yes. Connect the output pin to an analog input such as A0 and read using analogRead().
What happens with no magnetic field?
The output sits near half the supply voltage (around 2.5V at 5V supply).
Please note: Magnets with stronger magnetic fields produce larger output voltage changes.