SKU: SENS-0992
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Honeywell SS361RT Latching Hall Effect Sensor - SOT-23-3 SMD Package

₹46.00 (Inclusive of all taxes)
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The Honeywell SS361RT is a digital latching Hall-effect sensor in an SOT-23-3 SMD package, operating from 3.0 to 12.0 Vdc. It provides a stable digital output for precise magnetic field detection, ideal for integration into compact PCB designs for motion control and position sensing in industrial and consumer electronics.

Features

  • Digital latching Hall-effect sensor with a low operating point of ±12 mT.
  • Wide operating voltage range from 3.0 Vdc to 12.0 Vdc for low-power and standard logic applications.
  • Robust SOT-23-3 surface-mount package suitable for automated PCB assembly.
  • Extended operating temperature range from -40°C to +150°C for harsh environments.
  • Outputs up to 20 mA, compatible with direct microcontroller or logic gate interfacing.

Out of stock

Description

The Honeywell SS361RT is a precision digital Hall-effect sensor utilizing a latching (bipolar) switching principle. It toggles its output state in response to specific north and south magnetic field polarities, providing a stable, non-volatile position memory without continuous power. This makes it ideal for accurate displacement and rotation sensing.

Housed in a compact, industry-standard SOT-23-3 surface-mount package, the sensor is designed for high-volume automated placement. Its wide 3-12V supply range and low 8 mA operating current enable energy-efficient designs, while its robust construction ensures reliable performance across an industrial temperature span from -40°C to 150°C.

Key Features

  • Latching (Bipolar) Operation: Switches output state with specific magnetic pole, maintaining state until opposite pole is applied.
  • Low-Voltage Capable: Operates down to 3.0 Vdc, making it suitable for battery-powered and modern low-power logic systems.
  • High-Temperature Resilience: Guaranteed performance across an extreme -40°C to +150°C ambient temperature range.
  • Surface-Mount Design: SOT-23-3 package facilitates compact, cost-effective PCB integration using automated assembly processes.
  • Digital Open-Collector Output: Provides a clean, 20 mA sink-capable digital signal for direct interfacing with microcontrollers, PLCs, or logic circuits.
  • Precise Magnetic Switching: Features a well-defined operating point of ±12 mT for reliable and repeatable triggering.

Applications

  • Brushless DC (BLDC) motor commutation and speed detection.
  • Reed switch replacement in appliance lid/door closure detection systems.
  • Linear and rotary position sensing in industrial automation and robotics.
  • Non-contact switching in automotive gearbox selectors and pedal position sensors.
  • Flow meter and tachometer pulse generation in fluid and rotational monitoring systems.

Technical Specifications

Manufacturer Part NumberSS361RT
Sensor TypeDigital Latching Hall-Effect
Operating Voltage3.0 Vdc to 12.0 Vdc
Operating Supply Current8 mA
Maximum Output Current20 mA
Operating Point (Bop/Brp)±12 mT
Output TypeOpen Collector
Package / CaseSOT-23-3
Mounting TypeSMD/SMT
Operating Temperature-40°C to +150°C

Frequently Asked Questions

What is the difference between a latching and a non-latching Hall-effect sensor?

A latching (bipolar) sensor, like the SS361RT, requires opposite magnetic polarities to switch its output on and off, and it maintains its last state when the magnet is removed. A non-latching (unipolar) sensor only responds to the presence or absence of a single magnetic pole and returns to its default state when the field is removed.

What is the required pull-up resistor value for the SS361RT's open-collector output?

A typical pull-up resistor value ranges from 1kΩ to 10kΩ, connected between the output pin and the supply voltage (Vcc). The exact value depends on your desired switching speed and current consumption; a 4.7kΩ resistor is a common starting point for 5V systems.

Can the SS361RT operate directly from a 3.3V microcontroller power rail?

Yes, the SS361RT's specified operating voltage range starts at 3.0 Vdc, making it fully compatible with 3.3V logic systems. Ensure your pull-up resistor is also connected to the same 3.3V rail for proper logic-level output.

How should I orient the magnet relative to the sensor for proper operation?

The SS361RT is sensitive to the magnetic field perpendicular to the face of the SOT-23 package (through the top or bottom of the chip). For latching operation, you must alternate the north and south poles of the magnet across the sensor's active area to toggle the output state.

Package Includes

  • 1 x Honeywell SS361RT Latching Hall Effect Sensor

Additional Information

Weight 0.025 kg
Dimensions 0.6 × 0.5 × 0.3 cm