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Honeywell SS40A Bipolar Hall Effect Magnetic Sensor IC - 3V DC, 10-45 G Operating Point

₹68.00 (Inclusive of all taxes)
Out of Stock

The Honeywell SS40A is a bipolar digital Hall-effect sensor IC designed for board mounting, offering a 3V DC operating capability and a magnetic operating point range of 10 to 45 Gauss. It provides a reliable digital output for motion control and position sensing in low-voltage applications compatible with industrial PLCs and embedded systems.

Features

  • Bipolar digital Hall-effect sensor IC with 10-45 G operating point range.
  • Low-voltage operation down to 3V DC for energy-efficient designs.
  • Wide operating temperature range from -40°C to 150°C for harsh environments.
  • Compact SOT-23 surface-mount package for automated PCB assembly.
  • Digital output suitable for direct interfacing with microcontrollers and logic circuits.

Out of stock

Description

The Honeywell SS40A is a solid-state Hall-effect sensor that provides a digital output in response to a bipolar magnetic field. Its operation is based on the Hall effect principle, where a voltage difference is generated across a conductor when a magnetic field is applied perpendicular to the current flow. This IC integrates the Hall element, signal conditioning, and a Schmitt trigger output stage into a single, compact SOT-23 package.

Engineered for stability across a wide temperature span from -40°C to 150°C, the SS40A is suitable for demanding automotive, industrial, and appliance applications. Its 3V DC capability makes it ideal for battery-powered systems and modern low-voltage digital circuits, while its digital output simplifies integration for tasks like lid closure detection, rotary encoding, and linear displacement sensing.

Key Features

  • Bipolar magnetic response activates with either north or south pole magnetic fields.
  • Low operating supply current (10 mA typical) for reduced system power consumption.
  • Robust output stage capable of sinking up to 20 mA.
  • Designed for automated surface-mount assembly, reducing manufacturing costs.
  • High-reliability construction suitable for automotive and industrial grade applications.
  • Stable performance across the full military temperature range.
  • Optimized performance-to-cost ratio for high-volume production.

Applications

  • Brushless DC (BLDC) motor commutation and speed control.
  • Appliance lid/door closure detection in washing machines and dishwashers.
  • Rotary encoder and non-contact position sensing in industrial equipment.
  • Proximity and presence detection in automotive gear selectors and seat belts.
  • Flow meter and vane sensing in fluid control systems.

Technical Specifications

Manufacturer Part NumberSS40A
Sensor TypeDigital Hall-Effect, Bipolar
Operating Point (Min)10 Gauss
Operating Point (Max)45 Gauss
Supply Voltage3 V DC
Operating Supply Current10 mA
Maximum Output Current20 mA
Output TypeDigital (Open Collector)
Operating Temperature Range-40°C to 150°C
Package TypeSOT-23 Surface Mount

Frequently Asked Questions

What is the operating voltage range for the Honeywell SS40A sensor?

The SS40A is designed for a nominal 3V DC supply, making it suitable for low-voltage and battery-powered applications. It is important to stay within the specified voltage limits to ensure proper digital output switching and long-term reliability.

How does the bipolar magnetic operation work with this Hall sensor?

The SS40A is a bipolar sensor, meaning it responds to both north and south magnetic poles. The digital output will switch states when the applied magnetic field exceeds the operating point threshold (between 10 and 45 Gauss) regardless of the magnetic polarity, providing flexibility in magnet orientation.

What is the output type and how do I interface it with a microcontroller?

The SS40A features an open-collector digital output. This requires a pull-up resistor (typically 1kΩ to 10kΩ) to the logic supply voltage (3V or 5V). The output can then be connected directly to a microcontroller's digital input pin for reading the sensor's state.

Can this sensor be used in high-temperature environments?

Yes, the SS40A is rated for an extended operating temperature range of -40°C to 150°C. This makes it suitable for under-hood automotive applications, industrial machinery, and appliances where ambient temperatures can be extreme.

Package Includes

  • 1 x Honeywell SS40A Hall Effect Sensor IC

Additional Information

Weight 0.11 kg
Dimensions 8 × 6 × 3 cm