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Magnetic Sensors

SS351AT, SS451A, SS551AT

Omnipolar Hall-effect. SOT-23, flat TO-92-style, SOT-89B packages. 85 G typ. operate.

Overview
SS30AT, SS40A, SS50AT

The SS351AT, SS451A and SS551AT sensors 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 either a North pole or a South pole.

These omnipolar sensors are sensitive and flexible devices designed to meet a wide range of potential applications. The SS351AT, SS451A and SS551AT have a typical operating point of 85 G at 25 °C [77 °F]. Because they can be operated by a North pole or a South pole, they do not require the magnet polarity to be identified, thus making the installation easier and potentially reducing the system cost.

These sensors are available in three package styles. The SS351AT is available in the subminiature SOT-23 surface mount package: the SS451A is available in the leaded, flat TO-92-style package, and the SS551AT is supplied in the SOT-89B surface-mount package. The SS351AT’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 SS351AT is available on tape and reel (3000 units per reel): the SS451A is available in a bulk package (1000 units per bag), and the SS551AT is available on tape and reel (1000 units per reel).

Data Sheet
Name
Description
File Size
Date
Size
SS351AT, SS451A, SS551AT Omnipolar Digital Hall-effect Sensor IC
application/pdf 500.75 KB
7/15/2021
500.75 KB
Manuals and Guides
Name
Description
File Size
Date
Size
Position Sensors Product Range Guide
application/pdf 4.85 MB
12/20/2022
4.85 MB
Installation Instructions
Name
Description
File Size
Date
Size
SS351AT/SS451A/SS551AT Omnipolar Hall-Effect Digital Position Sensors
application/pdf 428.32 KB
7/15/2021
428.32 KB
CAD Model
Name
Description
File Size
Date
Size
Magnetic Sensor IC Flat TO-92-Style CAD Model
application/zip 13.27 KB
7/15/2021
13.27 KB
Magnetic Sensors CAD Models - grouped
application/zip 130.4 KB
7/15/2021
130.4 KB
Magnetic Sensor IC SOT-23 CAD Model
application/zip 16.4 KB
7/15/2021
16.4 KB
Magnetic Sensor IC SOT-89B CAD Model
application/zip 32.96 KB
7/15/2021
32.96 KB
Brochure
Name
Description
File Size
Date
Size
Controlling the Future with Technology
application/pdf 11.8 MB
3/7/2023
11.8 MB
Making Sense of Sensing
application/pdf 3.37 MB
7/25/2024
3.37 MB
Industrial Applications: Going Beyond Limits
application/pdf 16.68 MB
2/11/2025
16.68 MB
Technical Note
Name
Description
File Size
Date
Size
Magnetic Sensor IC Product Line Card
application/pdf 480.99 KB
8/11/2021
480.99 KB
Magnetic Sensor IC Selection Chart
application/pdf 383.21 KB
3/6/2025
383.21 KB
Application Note
Name
Description
File Size
Date
Size
All-Terrain Vehicle Solutions
application/pdf 803.57 KB
12/20/2022
803.57 KB
Forestry Vehicles
application/pdf 1.05 MB
12/20/2022
1.05 MB
Platform Vehicles
application/pdf 628.05 KB
12/20/2022
628.05 KB
Defence Ground Vehicles -
application/pdf 872.87 KB
6/14/2023
872.87 KB
Sensors and Switches in Chemistry and Immunoassay Analyzers
application/pdf 1.24 MB
5/18/2023
1.24 MB
Sensors and Switches: Solutions for Medical Applications
application/pdf 1.34 MB
5/18/2023
1.34 MB
Agricultural Vehicles
application/pdf 1.11 MB
4/11/2024
1.11 MB
Solutions For Healthier Air & HVAC Systems
application/pdf 3.88 MB
5/31/2022
3.88 MB
Construction Vehicles -
application/pdf 984.29 KB
12/20/2022
984.29 KB
eBook
Name
Description
File Size
Date
Size
Redefining Road Rail & Rugged Applications
application/pdf 28.35 MB
12/20/2022
28.35 MB
Product Photo
Name
Description
File Size
Date
Size
SOT-89B highres photo
image/jpeg 25.73 KB
7/15/2021
25.73 KB
Magnetic Sensors Product Photos - grouped
application/zip 1.22 MB
7/15/2021
1.22 MB
SOT-89B lowres photo
image/jpeg 10.2 KB
7/15/2021
10.2 KB
Flat TO-92-style straight standard leads highres photo
image/jpeg 89.66 KB
7/15/2021
89.66 KB
SOT-23 highres photo
image/jpeg 115.42 KB
7/15/2021
115.42 KB
Flat TO-92-style straight standard leads lowres photo
image/jpeg 16.8 KB
7/15/2021
16.8 KB
SOT-23 lowres photo
image/jpeg 12.05 KB
7/15/2021
12.05 KB
Name
Description
File Size
Date
Size
Controlling the Future with Technology
application/pdf 11.8 MB
3/7/2023
11.8 MB
All-Terrain Vehicle Solutions
application/pdf 803.57 KB
12/20/2022
803.57 KB
Forestry Vehicles
application/pdf 1.05 MB
12/20/2022
1.05 MB
Platform Vehicles
application/pdf 628.05 KB
12/20/2022
628.05 KB
Redefining Road Rail & Rugged Applications
application/pdf 28.35 MB
12/20/2022
28.35 MB
Making Sense of Sensing
application/pdf 3.37 MB
7/25/2024
3.37 MB
Industrial Applications: Going Beyond Limits
application/pdf 16.68 MB
2/11/2025
16.68 MB
Position Sensors Product Range Guide
application/pdf 4.85 MB
12/20/2022
4.85 MB
Magnetic Sensor IC Flat TO-92-Style CAD Model
application/zip 13.27 KB
7/15/2021
13.27 KB
Defence Ground Vehicles -
application/pdf 872.87 KB
6/14/2023
872.87 KB
Sensors and Switches in Chemistry and Immunoassay Analyzers
application/pdf 1.24 MB
5/18/2023
1.24 MB
Sensors and Switches: Solutions for Medical Applications
application/pdf 1.34 MB
5/18/2023
1.34 MB
SOT-89B highres photo
image/jpeg 25.73 KB
7/15/2021
25.73 KB
Magnetic Sensors Product Photos - grouped
application/zip 1.22 MB
7/15/2021
1.22 MB
SOT-89B lowres photo
image/jpeg 10.2 KB
7/15/2021
10.2 KB
Magnetic Sensors CAD Models - grouped
application/zip 130.4 KB
7/15/2021
130.4 KB
Agricultural Vehicles
application/pdf 1.11 MB
4/11/2024
1.11 MB
SS351AT, SS451A, SS551AT Omnipolar Digital Hall-effect Sensor IC
application/pdf 500.75 KB
7/15/2021
500.75 KB
Flat TO-92-style straight standard leads highres photo
image/jpeg 89.66 KB
7/15/2021
89.66 KB
Magnetic Sensor IC Product Line Card
application/pdf 480.99 KB
8/11/2021
480.99 KB
Magnetic Sensor IC SOT-23 CAD Model
application/zip 16.4 KB
7/15/2021
16.4 KB
Solutions For Healthier Air & HVAC Systems
application/pdf 3.88 MB
5/31/2022
3.88 MB
SOT-23 highres photo
image/jpeg 115.42 KB
7/15/2021
115.42 KB
Flat TO-92-style straight standard leads lowres photo
image/jpeg 16.8 KB
7/15/2021
16.8 KB
Magnetic Sensor IC SOT-89B CAD Model
application/zip 32.96 KB
7/15/2021
32.96 KB
SS351AT/SS451A/SS551AT Omnipolar Hall-Effect Digital Position Sensors
application/pdf 428.32 KB
7/15/2021
428.32 KB
Magnetic Sensor IC Selection Chart
application/pdf 383.21 KB
3/6/2025
383.21 KB
Construction Vehicles -
application/pdf 984.29 KB
12/20/2022
984.29 KB
SOT-23 lowres photo
image/jpeg 12.05 KB
7/15/2021
12.05 KB
Showing 1 to 3 of 3 parts
Product Number
Part Number
Description
Leaf Category
Thumbnail
SS351AT
SS351AT Hall-effect digital position sensor, omnipolar, low sensitivity, SOT-23, pocket tape and reel, 3000 unitsreel
https://s7d1.scene7.com/is/image/Honeywell65/sps-siot-sot-23-and-flat-to-92-style-and-sot-89b-ciid-161640
SS351AT
SS351AT Hall-effect digital position sensor, omnipolar, low sensitivity, SOT-23, pocket tape and reel, 3000 unitsreel
https://s7d1.scene7.com/is/image/Honeywell65/sps-siot-sot-23-and-flat-to-92-style-and-sot-89b-ciid-161640
SS451A
SS451A Hall-effect digital position sensor IC, omnipolar, flat TO-92-style package, straight standard leads, 1000 unitsbag
https://s7d1.scene7.com/is/image/Honeywell65/sps-siot-sot-23-and-flat-to-92-style-and-sot-89b-ciid-161640
SS451A
SS451A Hall-effect digital position sensor IC, omnipolar, flat TO-92-style package, straight standard leads, 1000 unitsbag
https://s7d1.scene7.com/is/image/Honeywell65/sps-siot-sot-23-and-flat-to-92-style-and-sot-89b-ciid-161640
SS551AT
SS551AT Hall-effect digital position sensor IC, omnipolar, low sensitivity, SOT-89B, 1000 unitspocket tape and reel
https://s7d1.scene7.com/is/image/Honeywell65/sps-siot-sot-23-and-flat-to-92-style-and-sot-89b-ciid-161640
SS551AT
SS551AT Hall-effect digital position sensor IC, omnipolar, low sensitivity, SOT-89B, 1000 unitspocket tape and reel
https://s7d1.scene7.com/is/image/Honeywell65/sps-siot-sot-23-and-flat-to-92-style-and-sot-89b-ciid-161640
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