SKU: SENS-0971
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Honeywell SM353RT Board Mount Hall Effect/Magnetic AMR Sensor - SOT-23 Package

₹39.00 (Inclusive of all taxes)
Out of Stock

The Honeywell SM353RT is a board-mount Anisotropic Magnetoresistive (AMR) sensor offering ultra-high magnetic sensitivity (14 G typical) and omnipolar operation for detecting both north and south magnetic poles. It supports a wide 3-24V DC supply range and is housed in a compact SOT-23 package, making it suitable for integration into industrial, medical, and consumer electronic systems.

Features

  • Ultra-high magnetic sensitivity with 14 G typical, 20 G maximum operating point.
  • Wide supply voltage range from 3 Vdc to 24 Vdc for versatile system compatibility.
  • Omnipolar sensing activates with either magnetic pole (north or south).
  • Extended operating temperature range from -40°C to +85°C.
  • Compact SOT-23 surface-mount package supplied on tape and reel for automated assembly.

Out of stock

Description

The Honeywell SM353RT utilizes Anisotropic Magnetoresistive (AMR) technology to provide exceptional magnetic field sensitivity in a miniature SOT-23 footprint. This sensor is designed for precise, non-contact detection of magnetic fields, with an omnipolar response that simplifies installation by eliminating polarity concerns. Its robust design ensures stable performance across a wide temperature spectrum and supply voltage range.

Engineered for reliability in demanding environments, the SM353RT features RoHS-compliant materials and is ideal for high-volume automated PCB assembly processes. The sensor outputs a digital signal upon detecting a magnetic field exceeding its preset threshold, making it a critical component for position sensing, speed detection, and tamper-proofing applications in various industries.

Key Features

  • High-Sensitivity AMR Element: Delivers precise magnetic field detection with a typical operating point of 14 Gauss.
  • Broad Voltage Compatibility: Operates from 3V to 24V DC, accommodating 3.3V, 5V, 12V, and 24V logic systems.
  • Omnipolar Magnetic Response: Detects both north and south magnetic poles, simplifying sensor orientation and placement.
  • Industrial Temperature Rating: Maintains specified performance across an extended -40°C to +85°C range.
  • Compact SMT Package: SOT-23 footprint enables high-density PCB designs and automated pick-and-place assembly.
  • RoHS Compliance: Manufactured with environmentally safe materials meeting global regulatory standards.
  • High-Frequency Capability: Suitable for dynamic sensing applications like motor RPM and fluid flow measurement.

Applications

  • Industrial Flow Metering: High-frequency pulse counting for HVAC, water, fuel, and gas flow sensors.
  • Utility Meter Anti-Tamper Systems: Detection of unauthorized magnetic fields in smart electricity and water meters.
  • Motor Speed & Position Sensing: RPM measurement and in-cylinder piston position detection in automotive and industrial motors.
  • Appliance Safety & Control: Lid, door, and drawer position detection in dishwashers, washing machines, and refrigerators.
  • Medical Device Positioning: RPM monitoring in pumps, position sensing in infusion systems, and incline detection for hospital beds.

Technical Specifications

Model NumberSM353RT
Sensor TypeAnisotropic Magnetoresistive (AMR) / Hall Effect
Operating Point (Typical)14 G
Operating Point (Maximum)20 G
Sensing PolarityOmnipolar
Supply Voltage3 Vdc to 24 Vdc
Operating Temperature-40°C to +85°C
Package / CaseSOT-23
PackagingTape and Reel
ComplianceRoHS

Frequently Asked Questions

What is the operating voltage range for the Honeywell SM353RT sensor?

The SM353RT sensor operates from a wide 3 Vdc to 24 Vdc supply range. This makes it directly compatible with common logic levels like 3.3V and 5V, as well as industrial 12V and 24V control systems without requiring an additional voltage regulator.

Does the SM353RT sensor detect both north and south magnetic poles?

Yes, the SM353RT is an omnipolar sensor. It will activate when exposed to a sufficiently strong magnetic field of either polarity (north or south), which simplifies installation by removing the need for precise magnetic pole alignment.

What is the typical magnetic field strength required to activate the sensor?

The typical operating point (sensitivity) is 14 Gauss (G), with a maximum specified operating point of 20 G. A magnet providing a field strength at or above this threshold at the sensor's face will trigger the digital output switch.

What is the operating temperature range for industrial environments?

This sensor is rated for continuous operation from -40°C to +85°C. This industrial-grade temperature range ensures reliable performance in harsh outdoor, automotive, and factory automation applications.

Is the SM353RT suitable for automated PCB assembly?

Absolutely. The sensor is supplied in a compact, surface-mount SOT-23 package on standard tape and reel packaging. This format is ideal for high-volume, automated pick-and-place assembly lines commonly used in electronics manufacturing.

Package Includes

  • 1 x Honeywell SM353RT AMR Sensor (SOT-23 package)

Additional Information

Weight 0.01 kg
Dimensions 1.5 × 0.7 × 0.2 cm