Honeywell is pleased to announce its sixth new Hall-effect sensor this year: the SS345PT and SS445P Unipolar Hall-Effect Digital Position Sensors with a built-in pull-up resistor. As unipolar devices, the SS345PT and SS445P respond to either a North pole or a South pole, depending upon the sensor. The built-in pull-up resistor can easily interface with common electronic circuits without adding external components, helping to reduce total system costs.
These devices join the recently introduced SS30AT, SS361RT/ SS461R, SS340RT/SS440R, SS311PT/SS411P, and SS351AT/SS451A digital Hall-effect sensors with a downsized integrated circuit, resulting in lower costs for customers. These sensors are well suited for simple, high-volume, cost-sensitive position and motion sensing applications.
Two package styles:
• SS345PT: Responds to a single North pole; subminiature SOT-23 surface mount package;
supplied on tape and reel (3000 units per reel)
• SS445P: Responds to a single South pole; small, leaded, flat TO-92-style package;
available in bulk (1000 units per bag)
The new SS345PT and SS445P provide value for our customers 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
Reduce total system costs: A built-in pull-up resistor eliminates the customer having to
purchase an external pull-up resistor for many applications, reducing total system cost
Economical: The SS345PT is supplied on tape and reel, allowing for automated, lower-cost
pick and place assembly which can help the customer reduce manufacturing costs
Subminiature size: The SS345PT’s subminiature package size requires less printed circuit
board (PCB) space than standard Hall-effect sensor packages such as TO-92 and SOT-89, allowing for use in
smaller assemblies
Flexible: A low 2.7 Vdc to 7 Vdc supply voltage range allows for use in low voltage applications
Industrial Pneumatic Control Applications
• Pneumatic components: Valves, pumps, actuators
• Pneumatic systems: HVAC transmitters, automated pneumatic assembly equipment, pneumatic operator control
systems
• Gas collection/delivery: Industrial gas supply
• Precise sampling/gas flow: Barometry, gas chromatography, analytical instrument sampling systems
Commercial
• Door or lid closure detection in appliances
• Speed and RPM sensing in fitness equipment
• Flow rate sensing in appliances and water softeners
• Damper or valve position control in HVAC equipment
• Printer head position sensing
Industrial
• Flow rate sensing in industrial processes
• Speed and RPM sensing in fitness equipment
• 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
