Honeywell SS351AT SS451A Data Sheet
Summary
These versatile digital Hall-effect sensor devices are designed for highly accurate position and motion detection using magnetic fields. Available in both subminiature (SS351AT) and leaded packages (SS451A), these sensors enable reliable operation across diverse environments, including industrial control, HVAC systems, smart building access, and medical equipment. The accompanying manual provides comprehensive details on electrical specifications, operating temperature ranges (-40°C to 150°C), system integration guides, magnetic performance curves, and various low-voltage application concepts for engineering professionals and system designers.
Page 1 Text Content
DESCRIPTION The SS351AT and SS451A sensors are small, versatile digital These sensors are available in two package styles. The Hall-effect devices that are operated by the magnetic field from SS351AT is available in the subminiature SOT-23 surface a permanent magnet or an electromagnet. They are designed mount package; the SS451A is available in the leaded, flat TO- to respond to a either a North pole or a South pole. 92-style package. The SS351AT’s small size requires less PC
board space, allowing it to be used in smaller assemblies. Its
These omnipolar sensors are sensitive and flexible devices 3 Vdc capability allows for use in low voltage applications, designed to meet a wide range of potential applications. The promoting energy efficiency. SS351AT and SS451A have a typical operating point of 85 G at 25 °C [77 °F]. Because they can be operated by a North The SS351AT is available on tape and reel (3000 units per pole or a South pole, they do not require the magnet polarity to reel); the SS451A is available in a bulk package (1000 units be identified, thus making the installation easier and potentially per bag). reducing the system cost.
FEATURES POTENTIAL APPLICATIONS Subminiature package size (SS351AT) supplied on tape Commercial: and reel allows for a compact design with automated Speed and RPM (revolutions per minute) sensing in component placement, helping to reduce manufacturing fitness equipment costs Magnetic encoder for building access Simple activation from a North pole or a South pole and Damper or valve position control in HVAC (heating, sensitive magnetics make this omnipolar product suitable ventilation and air conditioning) equipment in a variety of potential motion control, lid closure Flow rate sensing in appliances and water softeners detection, and displacement sensing applications Printer head position sensing Low voltage 3 Vdc capability helps reduce power Industrial: consumption Flow rate sensing in industrial processes Built-in reverse polarity protection protects the device from Robotic control (cylinder position monitoring) potential damage during installation Float-based fluid level sensing Thermally balanced integrated circuit provides for stable Medical: operation over a wide temperature range of -40° to Displacement sensor in hospital beds and medical 150 °C [-40 °F to 302 °F] equipment Ro HS-compliant materials meet Directive 2002/95/EC Medication bin monitor on portable drug carts
Page Summary Contents For Honeywell SS351AT SS451A Data Sheet
Manual Details
| Brand | Honeywell |
|---|---|
| Pages | 4 |
| File Size | 427.40 KB |
| Published | May 22, 2026 |
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Frequently Asked Questions
What is the primary difference between the SS351AT and SS451A packages?
The SS351AT features a subminiature SOT-23 package for small assemblies, while the SS451A is available in a leaded TO-92 style package.
What voltage capability do these sensors offer for power efficiency?
They are omnipolar and have a 3 Vdc capability, which allows for use in low voltage applications and promotes energy efficiency.
How are the devices protected during installation or wiring errors?
The devices include built-in reverse polarity protection to safeguard against potential damage during the initial installation process.
What is the operating temperature range listed for general use?
For SS351AT/SS451A, the typical operating temperature range specified is -40°C to 150°C [-40 °F to 302 °F].