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Honeywell S351AT Omnipolar Hall Effect Sensor IC - SOT-23, 3.0V to 24VDC

₹46.00 (Inclusive of all taxes)
Out of Stock

The Honeywell S351AT is a board-mount, omnipolar Hall effect sensor IC in a compact SOT-23 package, operating from 3.0V to 24VDC. It provides reliable magnetic field detection for both north and south poles, designed for stable performance across a wide -40°C to 150°C temperature range, making it suitable for integration into industrial, medical, and consumer electronic systems.

Features

  • Omnipolar activation responds to both North and South magnetic poles.
  • Wide operating voltage range from 3.0V to 24VDC with reverse polarity protection.
  • Thermally balanced IC ensures stable performance from -40°C to +150°C.
  • Compact SMD/SMT SOT-23-3 package for space-constrained PCB designs.
  • RoHS-compliant construction for environmental standards.

Out of stock

Description

The Honeywell S351AT is a solid-state Hall effect sensor integrated circuit designed for precise and reliable magnetic field sensing. Utilizing an omnipolar design, it activates in the presence of either a north or south magnetic pole, simplifying system design by eliminating polarity orientation concerns. Its integrated reverse polarity protection safeguards the device against accidental miswiring, enhancing system robustness.

Engineered with a thermally balanced IC architecture, the sensor maintains consistent switching points and output characteristics across an extensive industrial temperature range from -40°C to +150°C. This makes it ideal for harsh environments and applications requiring long-term reliability. The device is supplied in a standard SOT-23-3 surface-mount package, facilitating automated assembly and integration into dense printed circuit board layouts.

Key Features

  • Omnipolar magnetic activation for simplified design and installation.
  • Broad 3.0V to 24VDC operating range compatible with 3.3V, 5V, 12V, and 24V systems.
  • Integrated reverse polarity protection prevents damage from incorrect power connection.
  • Thermally balanced IC ensures minimal performance drift over the full -40°C to +150°C span.
  • Compact SOT-23-3 surface-mount package for high-density PCB applications.
  • RoHS-compliant, lead-free construction meets global environmental directives.
  • Sensitive magnetic response with an operating point range of 35 G to 135 G.
  • Capable of sinking up to 20mA output current for direct drive of LEDs or logic inputs.

Applications

  • Speed and RPM sensing in motors, fans, and fitness equipment.
  • Proximity and position sensing for valves, dampers, and robotic cylinders.
  • Magnetic encoder systems for building access control and printer head positioning.
  • Fluid level detection in appliances using float-based magnetic triggers.
  • Flow-rate sensing in water softeners, meters, and medical instrumentation.

Technical Specifications

Manufacturer Part NumberS351AT
BrandHoneywell
Sensor TypeOmnipolar Hall Effect IC
Package / CaseSOT-23-3
Mounting TypeSMD / SMT
Operating Voltage3.0 VDC to 24 VDC
Max Output Current20 mA
Operating Point (Bop)35 G to 135 G
Operating Temperature-40°C to +150°C
ComplianceRoHS
Activation TypeOmnipolar (North or South Pole)
Key FeatureReverse Polarity Protection, Thermally Balanced IC

Frequently Asked Questions

What is the operating voltage range for the Honeywell S351AT sensor?

The Honeywell S351AT Hall effect sensor operates from a wide voltage range of 3.0V to 24VDC. This makes it compatible with common logic levels like 3.3V and 5V, as well as standard industrial 12V and 24V power supplies. The IC includes reverse polarity protection for added installation safety.

Does this sensor respond to both north and south magnetic poles?

Yes, the S351AT is an omnipolar Hall effect sensor, meaning it activates in the presence of either a north or south magnetic pole. This simplifies design as you do not need to orient the magnet's polarity relative to the sensor face, making it ideal for applications like simple proximity or speed sensing.

What is the maximum output current this sensor can handle?

The S351AT can sink a maximum output current of 20mA. This is sufficient to directly drive an LED indicator or serve as a logic-level input to a microcontroller or PLC without requiring an additional buffer or transistor in most cases, simplifying the interface circuit.

What is the operating temperature range for reliable performance?

This sensor is designed for industrial environments with an operating temperature range of -40°C to +150°C. Its thermally balanced integrated circuit architecture ensures stable switching thresholds and reliable performance across this entire range, suitable for automotive, industrial, and outdoor applications.

Package Includes

  • 1 x Honeywell S351AT Hall Effect Sensor IC (SOT-23-3 package)

Additional Information

Weight 0.01 kg
Dimensions 5 × 5 × 2 cm