A1120EUA-T Hall Effect Switch

Allegro Microsystems A1120EUA-T Hall Effect Switch
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Price: £1.32
(£1.10 + VAT)
Stock Quantity: 78
Model: A1120EUA-T
Manufacturer: Allegro Microsystems
Average Rating: 5 out of 5 Stars!

Allegro Microsystems

A1120EUA-T Hall Effect Switch

The A1120EUA Hall-effect, unipolar switches are extremely temperature-stable and stress-resistant sensor ICs.

Each device includes on a single silicon chip a voltage regulator, Hall-voltage generator, small-signal amplifier, chopper stabilization, Schmitt trigger, and a short-circuit protected open-drain output to sink up to 25 mA. An on-board regulator permits operation with supply voltages of 3 to 24 V. The advantage of operating down to 3 V is that the device can be used in 3 V applications or with additional external resistance in series with the supply pin for greater protection against high voltage transient events.

A south pole of sufficient strength turns the output on. Removal of the magnetic field turns the output off.


  • Unipolar switchpoints
  • Resistant to physical stress
  • Superior temperature stability
  • Output short-circuit protection
  • Operation from unregulated supply
  • Reverse battery protection
  • Solid-state reliability
  • Small package sizes


A1120EUA-T Datasheet


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A1120EUA-T Hall Effect Switch
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