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Overview

The SS340RT/SS440R Series sensor ICs are small, versatile digital Hall-effect devices that are operated by the magnetic field from a permanent magnet or an electromagnet. They are designed to respond to a single pole: North (SS340RT) or South (SS440R).

These unipolar Hall ICs are supplied in three different magnetic sensitivities to meet a wide range of potential applications:

  • SS341RT and SS441R offer the highest sensitivity, with a typical operating point of 75 G at 25 °C [77 °F].
  • SS343RT and SS443R offer medium sensitivity, with a typical operating point of 135 G at 25 °C [77 °F].
  • SS349RT and SS449R offer the lowest sensitivity, with a typical operating point of 305 G at 25 °C [77 °F].

These sensors are available in two package styles:

  • SS340RT: Miniature SOT-23 surface mount package.
  • SS440R: Leaded, flat TO-92-style package.

The SS340RT’s small size requires less PC board space, allowing it to be used in smaller assemblies. Its 3 Vdc capability allows for use in low voltage applications, promoting energy efficiency.

The SS340RT Series is available on tape and reel (3000 units per reel); the SS440R Series is available in a bulk package (1000 units per bag).

SS340RT, SS440R Series Hall-effect Sensor ICs - Honeywell

Documents

TITLE DOCUMENT TYPE LANGUAGE SIZE
SS340RT/SS440R Unipolar Digital Hall-Effect Sensor ICs Datasheet Datasheet English 695KB
SS340RT/SS440R Unipolar Digital Hall-Effect Digital Position Sensor ICs Installation Instructions English 489KB
Magnetic Sensors Line Guide Product Line Guide English 377KB

Browse SS340RT, SS440R Series Products

Product Package Type Operate Point
SS341RT SOT-23, pocket tape and reel, 3000 units 135 G max.; 75 G typ. (25°C)
SS343RT SOT-23, pocket tape and reel, 3000 units 195 G max.; 135 G typ. (25°C)
SS349RT SOT-23, pocket tape and reel, 3000 units 410 G max.; 305 G typ. (25°C)
SS441R Flat TO-92-style, straight standard leads, bulk pack, 1000 units/bag 135 G max.; 85 G typ. (25°C)
SS443R Flat TO-92-style, straight standard leads, bulk pack, 1000 units/bag 195 G max.; 125 G typ. (25°C)
SS449R Flat TO-92-style, straight standard leads, bulk pack, 1000 units/bag 410 G max.; 350 G typ. (25°C)

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