SKU: SENS-0981
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Honeywell SS449A Unipolar Hall Effect Magnetic Sensor - TO-92-Flat-3 Package

₹66.00 (Inclusive of all taxes)
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The Honeywell SS449A is a unipolar digital Hall-effect sensor in a TO-92-Flat-3 package, designed for board mounting and triggered by a south magnetic pole. It operates from 3V DC, making it suitable for low-voltage systems and energy-efficient designs in motion control and position sensing applications.

Features

  • Unipolar digital Hall-effect sensor with a 310 G to 390 G operating point.
  • Low-voltage operation from 3V DC, ideal for energy-efficient designs.
  • Wide operating temperature range from -40°C to +150°C for stable performance.
  • TO-92-Flat-3 through-hole package for automated placement and compact assemblies.
  • Maximum output current of 20 mA for direct interfacing with logic circuits.

Out of stock

Description

The Honeywell SS449A is a robust, board-mount Hall-effect sensor engineered for precise magnetic field detection. As a unipolar device, it activates in the presence of a specific magnetic pole (south) and deactivates when the field is removed, providing a clean digital output signal. Its design facilitates integration into automated assembly processes, helping to reduce overall manufacturing costs.

Built for durability, the sensor maintains stable operation across an extensive industrial temperature range from -40°C to +150°C. The 3V DC capability allows seamless integration into modern low-power microcontrollers and battery-operated systems, promoting energy efficiency without sacrificing performance in applications like lid closure detection and displacement sensing.

Key Features

  • Unipolar magnetic sensing with a defined 310-390 Gauss operating point.
  • Optimized for low-voltage operation down to 3V DC, enhancing energy efficiency.
  • Robust construction rated for continuous operation from -40°C to +150°C.
  • TO-92-Flat-3 through-hole package enables automated PCB assembly.
  • Digital output simplifies interface with microcontrollers and logic circuits.
  • High-value build offering reliable performance in compact designs.
  • Maximum output current of 20 mA supports direct drive of indicators or opto-isolators.

Applications

  • Brushless DC (BLDC) motor commutation and speed detection.
  • Reed switch replacement in appliance lid and door closure detection.
  • Linear and rotary position sensing in industrial automation equipment.
  • Proximity and presence detection in vending machines and security systems.
  • Flow rate monitoring in fluid systems using magnetic impellers.

Technical Specifications

Manufacturer Part NumberSS449A
Sensor TypeUnipolar Digital Hall-Effect
Operating Point310 G to 390 G
Operating Supply Voltage3 V DC
Operating Supply Current10 mA
Maximum Output Current20 mA
Output Voltage18 V
Output TypeDigital
Package / CaseTO-92-Flat-3
Mounting TypeThrough Hole
Operating Temperature-40°C to +150°C

Frequently Asked Questions

What is the operating voltage range for the Honeywell SS449A sensor?

The SS449A is designed for low-voltage operation, typically running from 3V DC. This makes it compatible with common microcontroller power rails and battery-powered systems, promoting energy efficiency. Always ensure your supply voltage does not exceed the specified maximum to prevent damage.

How does the unipolar operation of the SS449A work?

As a unipolar sensor, the SS449A activates (output switches) only when a specific magnetic south pole strength exceeds its 310-390 Gauss operating point. It remains inactive when the field is removed or below the threshold, providing a simple digital on/off signal ideal for position and proximity detection.

What is the output type and how do I interface it with an Arduino?

The SS449A provides a digital open-collector output. To interface with an Arduino, connect the sensor's Vcc to 3V/5V (check compatibility), GND to ground, and the output pin to a digital input pin, typically using a pull-up resistor. The pin will go low when the magnetic field threshold is met.

Can this sensor be used for high-temperature applications?

Yes, the SS449A is rated for a wide operating temperature range from -40°C to +150°C, making it suitable for demanding industrial environments, automotive under-hood applications, and harsh outdoor conditions where thermal stability is crucial for reliable sensing.

Package Includes

  • 1 x Honeywell SS449A Unipolar Hall Effect Magnetic Sensor

Additional Information

Weight 0.11 kg
Dimensions 8 × 6 × 3 cm