High Precision Non-Contact Magnetic Sensor for Industrial-Grade Position and Speed Sensing
Honeywell Magnetic Sensors | High Precision Non-Contact for Industrial & Automotive Position/Speed Sensing
High precision non-contact magnetic sensors for industrial automation and automotive applications, enabling reliable position and speed detection in motors, engines, and motion control systems. With solid-state design, these sensors eliminate mechanical wear, ensure long service life, and maintain stable performance in harsh environments—resisting vibration, temperature fluctuations, and electromagnetic interference.
Key Features
- High Precision & Sensitivity: AMR/Hall technology with micro-gauss resolution for sub-mm/sub-degree position/speed sensing, reliable in weak magnetic fields
- Non-Contact & Long Life: Solid-state design eliminates wear, resists shock/vibration, delivers >1 billion operations, reduces maintenance
- Wide Temperature Range & Robustness: Operates from -40°C to 150°C, with temperature compensation and EMI immunity for harsh industrial/automotive environments
- Low Power & Easy Integration: Nano/microamp current draw for battery-powered devices; small SOT-23/TO-92 packages, SMT-compatible, simplified design
- Industrial-Grade Qualified: AEC-Q100, ISO26262 certified, ideal for automotive, industrial automation, robotics, and high-reliability systems
Product Series & Specifications
I. Magnetoresistive (MR) Nanopower Series
Ultra-low power consumption, omnipolar sensing, suitable for battery-powered devices
| Model |
Core Parameters |
Applicable Industries |
| SM351LT |
SOT-23 package; Operating Point: 7G (typ)/11G (max); Typical Current: 360nA; Supply Voltage: 1.65-5.5V; Operating Temperature: -40℃~125℃ |
Automotive (TPMS), Industrial (low-power sensor nodes), Consumer Electronics (smart water/gas meters) |
| SM353LT |
SOT-23 package; Operating Point: 14G (typ)/20G (max); Typical Current: 310nA; Supply Voltage: 1.65-5.5V; Operating Temperature: -40℃~125℃ |
Wireless Sensor Networks, Wearable Devices, Low-power Detection for Smart Homes |
| SM351RT |
SOT-23 package; Operating Point: 7G (typ)/11G (max); Supply Voltage: 3-24V; Standard Power Consumption; Operating Temperature: -40℃~125℃ |
Industrial Automation, Automotive Body Electronics, Motor Position Detection |
| SM353RT |
SOT-23 package; Operating Point: 14G (typ)/20G (max); Supply Voltage: 3-24V; Standard Power Consumption; Operating Temperature: -40℃~125℃ |
Industrial Valve Positioning, Gear Speed Sensing, Smart Home Devices |
| SM451R |
Flat TO-92 package; Operating Point: 7G (typ)/11G (max); Supply Voltage: 3-24V; Operating Temperature: -40℃~125℃ |
Industrial Field Equipment, Automotive Aftermarket Modifications, Home Appliance Door Control Detection |
| SM453R |
Flat TO-92 package; Operating Point: 14G (typ)/20G (max); Supply Voltage: 3-24V; Operating Temperature: -40℃~125℃ |
Agricultural Machinery, Industrial Motors, Home Security Sensors |
II. Unipolar Hall Series (SS340RT/SS440R)
Unipolar triggering, compact structure, suitable for simple position detection
| Model |
Core Parameters |
Applicable Industries |
| SS341RT/SS441R |
SS341RT (SOT-23), SS441R (TO-92); Operating Point: 75G (typ); Supply Voltage: 3-24V; Operating Temperature: -40℃~150℃ |
Automotive (seat position, door locks), Industrial (limit switches) |
| SS343RT/SS443R |
SS343RT (SOT-23), SS443R (TO-92); Operating Point: 135G (typ); Supply Voltage: 3-24V; Operating Temperature: -40℃~150℃ |
Industrial Automation, White Goods (door control), Automotive Electronics |
| SS349RT/SS449R |
SS349RT (SOT-23), SS449R (TO-92); Operating Point: 305G (typ); Supply Voltage: 3-24V; Operating Temperature: -40℃~150℃ |
Automotive Engine Compartments, Heavy Machinery, Position Detection in High-Temperature Environments |
III. Linear Hall Series (SS49E/SS495A, etc.)
Analog output, continuous position/magnetic field measurement
| Model |
Core Parameters |
Applicable Industries |
| SS49E |
TO-92/SOT-89; Ratiometric Output; Supply Voltage: 4.5-10.5V; Measurement Range: ±670G; Operating Temperature: -40℃~150℃ |
Industrial Displacement Detection, Motor Control, Current Sensing |
| SS495A |
TO-92; Ratiometric Output; High Precision; Supply Voltage: 4.5-10.5V; Operating Temperature: -40℃~150℃ |
Medical Equipment (infusion pump flow), Industrial Precision Positioning, Automotive Sensors |
| SS496B |
SOT-89; Low Noise; Ratiometric Output; Supply Voltage: 4.5-10.5V; Operating Temperature: -40℃~150℃ |
Industrial Automation, Robot Joint Positioning, High-Precision Detection Equipment |
IV. Micropower Hall Series (SL353)
Ultra-low power Hall, suitable for long standby battery-powered scenarios
| Model |
Core Parameters |
Applicable Industries |
| SL353HT |
SOT-23 package; ±60G (typ); Typical Current: 1.8μA; Supply Voltage: 1.8-5.5V; High-Efficiency Cycling; Operating Temperature: -40℃~125℃ |
Smart Wearables, IoT Sensors, Low-Power Industrial Nodes |
| SL353LT |
SOT-23 package; ±60G (typ); Typical Current: 1.8μA; Supply Voltage: 1.8-5.5V; Low-Efficiency Cycling; Operating Temperature: -40℃~125℃ |
Wireless Security Equipment, Smart Agriculture Sensors, Battery-Powered Meters |
V. Multi-Axis Magnetoresistive (AMR) Series (HMC Series)
1-3 axis magnetic field measurement, suitable for navigation and magnetometer scenarios
| Model |
Core Parameters |
Applicable Industries |
| HMC1001 |
Single-Axis; SOIC Package; Low-Field Detection; Supply Voltage: 2-12V; Operating Temperature: -20℃~70℃ |
Aerospace (attitude detection), Industrial Magnetometers, Navigation Equipment |
| HMC1002 |
Dual-Axis; SOIC Package; Low-Field Detection; Supply Voltage: 2-12V; Operating Temperature: -20℃~70℃ |
UAV Navigation, Robot Positioning, Geological Exploration Equipment |
| HMC1051Z |
Single-Axis; High Sensitivity; SIP Package; Operating Temperature: -20℃~70℃ |
Precision Instruments, Medical Equipment, Magnetic Field Anomaly Detection |
| HMC1052L |
Dual-Axis; High Sensitivity; SOIC Package; Operating Temperature: -20℃~70℃ |
Electronic Compasses, In-Vehicle Navigation, Industrial Automation Positioning |
| HMC2003 |
Tri-Axis; Analog Output; High Precision; Operating Temperature: -40℃~85℃ |
Aerospace, Advanced Driver Assistance Systems (ADAS), Research Equipment |
VI. Other Mainstream Models
| Model |
Core Parameters |
Applicable Industries |
| VF401 |
Two-Wire MR; Flat TO-92; ±7G (typ); Digital Sink Current Output; Operating Temperature: -40℃~150℃ |
Industrial Speed Detection, Gear Speed Sensing, Automotive Transmission Sensing |
| 2SS52M |
Omnipolar MR; U-Type Package; Supply Voltage: 3-24V; Operating Temperature: -40℃~125℃ |
Home Appliances (door control, liquid level), Industrial Automation, Automotive Electronics |
Frequently Asked Questions
What's the difference between Hall and AMR magnetic sensors?
Hall is lower cost, good for general position/speed. AMR has higher sensitivity and better stability, better for precision angle or weak field applications.
Do I need a magnet to use Honeywell magnetic sensors?
Yes, most require an external magnet (or ferrous target like gear teeth) to generate the field for detection.
Can they work in high temperature or dusty environments?
Most models work from -40°C to 125/150°C. Non-contact design is dust- and vibration-resistant, suitable for industrial/automotive harsh conditions.
Are they compatible with 3.3V or 5V systems?
Many support both 3.3V and 5V supply. Check datasheet for exact voltage range and output type (analog/digital).
How long do Honeywell magnetic sensors last?
Solid-state, no moving parts - typical lifetime >10 years or billions of operations, much longer than mechanical switches.
Can they detect both speed and direction?
Some dual-channel or quadrature output models can detect both speed and rotation direction. Single-channel usually only speed/presence.
Are these sensors sensitive to EMI or electrical noise?
Honeywell designs include noise filtering and EMC protection, but proper grounding and shielding are still recommended in noisy environments.
What's the typical response time?
Usually microsecond-level response, fast enough for motor commutation, high-speed counting, and real-time position control.
Do you have AEC-Q100 qualified parts for automotive?
Yes, many series (like SS/SM/SL) are AEC-Q100 qualified, suitable for automotive powertrain, chassis, and body applications.