Honeywell has expanded its Hall-effect sensor portfolio with the new SS351AT Series and SS451A Series Omnipolar Hall-effect Digital Position sensors that are designed to respond to either a North pole or a South pole. These products join the recently introduced SS311PT, SS411P, SS30AT, SS361RT, SS461R, SS340RT, and SS440R Series digital Hall-effect sensors that utilize a downsized integrated circuit, resulting in lower costs for customers.
The SS351AT and SS451A are small, versatile digital Hall-effect devices that are operated by the magnetic field from a permanent magnet or an electromagnet. They are designed for high-volume, cost-sensitive motion control, lid closure detection, and displacement sensing applications.
Two package styles:
- SS351AT: Subminiature SOT-23 surface mount package; supplied on tape and reel (3000 units per reel)
- SS451A: Small leaded, flat TO-92-style package; available in bulk package (1000 units per bag)
The new SS351AT and SS451A provide value by:
Price competitive: Honeywell has downsized the integrated circuit, saving on manufacturing costs while still meeting customer requirements; these savings result in lower costs to customers
Helps reduce total system cost: 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 system cost
Reduces manufacturing costs: SS351AT is supplied on tape and reel, often allowing for automated, lower-cost pick and place assembly which can help the customer reduce manufacturing costs
Subminiature size: SS351AT’s subminiature package size requires less printed circuit board (PCB) space, allowing for use in smaller assemblies
Promotes energy efficiency: Low 3 Vdc supply voltage capability allows for use in low voltage applications, promoting energy efficiency
Versatile: Omnipolar capability allows for use in a variety of potential applications, including motion control, lid closure detection, and displacement sensing
Prevents damage during installation: Built-in reverse polarity protects the device from potential damage during installation
POTENTIAL APPLICATIONS
Commercial
- Speed and RPM sensing in fitness equipment
- Magnetic encoder for building access
- Damper or valve position control in HVAC equipment
- Flow rate sensing in appliances and water softeners
- Printer head position sensing
Industrial
- Flow rate sensing in industrial processes
- Robotic control (cylinder position monitoring)
- Float-based fluid level sensing
Medical
- Displacement sensor in hospital beds and medical equipment
- Medication bin monitor on portable drug carts