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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).

Documents

TITLE DOCUMENT TYPE LANGUAGE SIZE
Transportation Range Guide Product Range Guide English 4MB
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
Speed Sensors Range Guide Product Range Guide English 767KB
Position Sensors Range Guide Product Range Guide English 2MB
Magnetic Sensors Product Line Guide English 377KB
Magnetic Sensor IC Selection Chart Line Card/Selection Chart English 140KB
Magnetic Sensor IC Product Line Card Line Card/Selection Chart English 218KB
MG Series Magnets Datasheet English 464KB
Sensors and Switches for Potential Medical Applications Product Range Guide English 2MB
Sensors and Switches for Potential Medical Applications Application Note English 842KB

Browse SS340RT, SS440R Series Products

Product Package Type Operate Point
SS341RT SOT-23, 3000 units/pocket tape and reel 135 G max.; 75 G typ. (25 °C)
SS343RT SOT-23, 3000 units/pocket tape and reel 195 G max.; 135 G typ. (25 °C)
SS349RT SOT-23, 3000 units/pocket tape and reel 410 G max.; 305 G typ. (25 °C)
SS441R Flat TO-92-style, 14,5 mm [0.57 in] straight standard leads, 1,27 mm [0.050 in] spacing, 1000 units/bag 135 G max.; 85 G typ. (25 °C)
SS443R Flat TO-92-style, 14,5 mm [0.57 in] straight standard leads, 1,27 mm [0.050 in] spacing, 1000 units/bag 195 G max.; 125 G typ. (25 °C)
SS449R Flat TO-92-style, 14,5 mm [0.57 in] straight standard leads, 1,27 mm [0.050 in] spacing, 1000 units/bag 410 G max.; 350 G typ. (25 °C)