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Unipolar Position Sensor ICs

SS345PT, SS445P

Unipolar Hall-effect digital sensor ICs. SOT-23 (SS345PT), flat TO-92-style (SS445P) packages. Digital sinking output.

The SS345PT/SS445P sensors are small, versatile digital Hall-effect devices that are operated by the magnetic field from a permanent magnet or an electromagnet, designed to respond to a single North pole (SS345PT) or South pole (SS445P).

These unipolar sensors are designed to meet the requirements of a wide range of potential applications. The internal pull-up resistor often eliminates the need for external components, further helping to reduce the system cost. These economical unipolar sensors are well suited for simple, high-volume, cost-sensitive position and motion sensing applications.

The 2.7 Vdc to 7 Vdc supply voltage range allows this device to be used in low voltage applications. The SS345PT’s very small size requires less PCB (printed circuit board) space, allowing it to be used in smaller assemblies.

These sensors are available in two package styles: the SS345PT in the subminiature SOT-23 surface mount package: the SS445P is available in the leaded, flat TO-92-style package.

The SS345PT is available on tape and reel (3000 units per reel): the SS445P is available in a bulk package (1000 units per bag).

Data Sheet
Name
Description
File Size
Date
Size
SS345PT/SS445P Unipolar Hall-Effect Digital Position Sensor ICs With Built-in Pull-up Resistor
application/pdf 454.15 KB
7/15/2021
454.15 KB
Manuals and Guides
Name
Description
File Size
Date
Size
Position Sensors Product Range Guide
application/pdf 4.85 MB
9/30/2021
4.85 MB
Installation Instructions
Name
Description
File Size
Date
Size
SS345PT/SS445P Unipolar Hall-Effect Digital Position Sensors with Built-in Pull-Up Resistor
application/pdf 272.86 KB
7/15/2021
272.86 KB
CAD Model
Name
Description
File Size
Date
Size
Magnetic Sensors CAD Models - grouped
application/zip 130.4 KB
7/15/2021
130.4 KB
Magnetic Sensor IC Flat TO-92-Style CAD Model
application/zip 13.27 KB
7/15/2021
13.27 KB
Magnetic Sensor IC SOT-23 CAD Model
application/zip 16.4 KB
7/15/2021
16.4 KB
Brochure
Name
Description
File Size
Date
Size
Making Sense of Sensing
application/pdf 3.37 MB
10/6/2021
3.37 MB
Controlling the Future with Technology
application/pdf 11.81 MB
8/17/2022
11.81 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 181.38 KB
7/15/2021
181.38 KB
Application Note
Name
Description
File Size
Date
Size
Defence Ground Vehicles
application/pdf 872.87 KB
3/10/2022
872.87 KB
Agricultural Vehicles
application/pdf 1.11 MB
3/23/2022
1.11 MB
Trains & Rail Systems
application/pdf 971.16 KB
1/28/2022
971.16 KB
Construction Vehicles
application/pdf 984.29 KB
1/27/2022
984.29 KB
Sensors and Switches: Solutions for Medical Applications
application/pdf 1.34 MB
11/23/2021
1.34 MB
Solutions For Healthier Air & HVAC Systems
application/pdf 3.88 MB
5/31/2022
3.88 MB
Platform Vehicles
application/pdf 628.05 KB
6/23/2022
628.05 KB
Forestry Vehicles
application/pdf 1.05 MB
6/23/2022
1.05 MB
All-Terrain Vehicle Solutions
application/pdf 803.57 KB
6/23/2022
803.57 KB
eBook
Name
Description
File Size
Date
Size
Redefining Road Rail & Rugged Applications
application/pdf 28.35 MB
6/23/2022
28.35 MB
Product Photo
Name
Description
File Size
Date
Size
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
Magnetic Sensors Product Photos - grouped
application/zip 1.22 MB
7/15/2021
1.22 MB
Name
Description
File Size
Date
Size
Magnetic Sensor IC Product Line Card
480.99 KB
8/11/2021
480.99 KB
Magnetic Sensors CAD Models - grouped
130.4 KB
7/15/2021
130.4 KB
Flat TO-92-style straight standard leads highres photo
89.66 KB
7/15/2021
89.66 KB
Magnetic Sensor IC Flat TO-92-Style CAD Model
13.27 KB
7/15/2021
13.27 KB
SOT-23 highres photo
115.42 KB
7/15/2021
115.42 KB
Flat TO-92-style straight standard leads lowres photo
16.8 KB
7/15/2021
16.8 KB
SS345PT/SS445P Unipolar Hall-Effect Digital Position Sensors with Built-in Pull-Up Resistor
272.86 KB
7/15/2021
272.86 KB
Defence Ground Vehicles
872.87 KB
3/10/2022
872.87 KB
Magnetic Sensor IC Selection Chart
181.38 KB
7/15/2021
181.38 KB
SS345PT/SS445P Unipolar Hall-Effect Digital Position Sensor ICs With Built-in Pull-up Resistor
454.15 KB
7/15/2021
454.15 KB
SOT-23 lowres photo
12.05 KB
7/15/2021
12.05 KB
Agricultural Vehicles
1.11 MB
3/23/2022
1.11 MB
Trains & Rail Systems
971.16 KB
1/28/2022
971.16 KB
Magnetic Sensors Product Photos - grouped
1.22 MB
7/15/2021
1.22 MB
Construction Vehicles
984.29 KB
1/27/2022
984.29 KB
Magnetic Sensor IC SOT-23 CAD Model
16.4 KB
7/15/2021
16.4 KB
Sensors and Switches: Solutions for Medical Applications
1.34 MB
11/23/2021
1.34 MB
Position Sensors Product Range Guide
4.85 MB
9/30/2021
4.85 MB
Solutions For Healthier Air & HVAC Systems
3.88 MB
5/31/2022
3.88 MB
Making Sense of Sensing
3.37 MB
10/6/2021
3.37 MB
Redefining Road Rail & Rugged Applications
28.35 MB
6/23/2022
28.35 MB
Platform Vehicles
628.05 KB
6/23/2022
628.05 KB
Forestry Vehicles
1.05 MB
6/23/2022
1.05 MB
All-Terrain Vehicle Solutions
803.57 KB
6/23/2022
803.57 KB
Controlling the Future with Technology
11.81 MB
8/17/2022
11.81 MB
Name
Description
File Size
Date
Size
SS345PT/SS445P Unipolar Hall-Effect Digital Position Sensor ICs With Built-in Pull-up Resistor
454.15 KB
7/15/2021
Position Sensors Product Range Guide
4.85 MB
9/30/2021
SS345PT/SS445P Unipolar Hall-Effect Digital Position Sensors with Built-in Pull-Up Resistor
272.86 KB
7/15/2021
Magnetic Sensors CAD Models - grouped
130.4 KB
7/15/2021
Magnetic Sensor IC Flat TO-92-Style CAD Model
13.27 KB
7/15/2021
Magnetic Sensor IC SOT-23 CAD Model
16.4 KB
7/15/2021
Making Sense of Sensing
3.37 MB
10/6/2021
Controlling the Future with Technology
11.81 MB
8/17/2022
Magnetic Sensor IC Product Line Card
480.99 KB
8/11/2021
Magnetic Sensor IC Selection Chart
181.38 KB
7/15/2021
Defence Ground Vehicles
872.87 KB
3/10/2022
Agricultural Vehicles
1.11 MB
3/23/2022
Trains & Rail Systems
971.16 KB
1/28/2022
Construction Vehicles
984.29 KB
1/27/2022
Sensors and Switches: Solutions for Medical Applications
1.34 MB
11/23/2021
Solutions For Healthier Air & HVAC Systems
3.88 MB
5/31/2022
Platform Vehicles
628.05 KB
6/23/2022
Forestry Vehicles
1.05 MB
6/23/2022
All-Terrain Vehicle Solutions
803.57 KB
6/23/2022
Redefining Road Rail & Rugged Applications
28.35 MB
6/23/2022
Flat TO-92-style straight standard leads highres photo
89.66 KB
7/15/2021
SOT-23 highres photo
115.42 KB
7/15/2021
Flat TO-92-style straight standard leads lowres photo
16.8 KB
7/15/2021
SOT-23 lowres photo
12.05 KB
7/15/2021
Magnetic Sensors Product Photos - grouped
1.22 MB
7/15/2021
Image
SKU
Description
alt
SS345PT
SS345PT Hall-effect digital position sensor IC with built-in pull-up resistor, unipolar, high sensitivity, SOT-23, pocket tape and reel, 3000 units/reel
alt
SS445P
SS445P Hall-effect digital position sensor IC with built-in pull-up resistor, unipolar, high sensitivity, flat TO-92-style package, straight standard leads, 1000 units/bag
Image
SKU
Description
alt
SS345PT
SS345PT Hall-effect digital position sensor IC with built-in pull-up resistor, unipolar, high sensitivity, SOT-23, pocket tape and reel, 3000 units/reel
alt
SS445P
SS445P Hall-effect digital position sensor IC with built-in pull-up resistor, unipolar, high sensitivity, flat TO-92-style package, straight standard leads, 1000 units/bag