The SS340RT/SS440R sensor ICs are small, versatile digital Hall-effect devices that are operated by the magnetic field from a permanent magnet or an electromagnet. They are designed to respond to a single pole: North (SS340RT) or South (SS440R).
These unipolar Hall ICs are supplied in three different magnetic sensitivities to meet a wide range of potential applications:
• SS341RT and SS441R offer the highest sensitivity, with a typical operating point of 75 G at 25 °C [77 °F].
• SS343RT and SS443R offer medium sensitivity, with a typical operating point of 135 G at 25 °C [77 °F].
• SS349RT and SS449R offer the lowest sensitivity, with a typical operating point of 305 G at 25 °C [77 °F].
These sensors are available in two package styles:
• The SS340RT is available in the miniature SOT-23 surface mount package.
• SS440R is available in the leaded, flat TO-92-style package.
The SS340RT's small size requires less PC board space, allowing it to be used in smaller assemblies. Its 3 Vdc capability allows for use in low voltage applications, promoting energy efficiency.
The SS340RT Series is available on tape and reel (3000 units per reel); the SS440R Series is available in a bulk package (1000 units per bag).
What makes our sensors better:
• Robust IC design with ESD Class 2, reverse polarity protection and 150 °C [302 °F] capability
• Package and sensitivity options to better match application needs
• Dependable performance - similar Honeywell sensor ICs have been tested to over 100 million operations
• Honeywell legacy and expertise - 45 years of engineering excellence and Hall effect technology experience
Features and Benefits
Subminiature package size (SS340RT) supplied on tape and reel
Allows for a compact design with automated component placement, helping to reduce manufacturing costs
Simple activation from a single pole and multiple magnetic sensitivities (high, medium and low)
Make this product suitable in a variety of potential motion control, lid closure detection, and displacement sensing applications
High, medium and low magnetic sensitivities.
Low voltage 3 V capability
Helps reduce power consumption
Built-in reverse polarity protection
Protects the device from potential damage during installation
Thermally balanced integrated circuit
Provides for stable operation over a wide temperature range of -40 °C to 150 °C [-40 °F to 302 °F]
Enhances application flexibility.
RoHS-compliant materials
Meet Directive 2002/95/EC
Potential Applications
Industrial
Door or lid closure detection in appliances or electronically controlled containers
May be used recessed in the door frame with a magnet embedded in the door.
The magnet activates the sensor to indicate door open or close.
Simple speed and RPM (revolutions per minute) sensing in fitness and industrial equipment
May be mounted on the motor shaft of a treadmill such that the rotating magnet pole, which rotates with the motor, activates the sensor with each revolution, producing a single digital pulse for each revolution.
Flow rate sensing in water softeners, industrial processes, and appliances
May be used used with one or more magnets mounted on a paddle to measure the flow rate.
Damper or valve position control in industrial, HVAC and residential or commercial applications
May be used to determine if a valve or damper is fully open or fully closed.
Robotic control (cylinder position monitoring)
May be used to detect the piston's position by detecting a magnet mounted on the piston ring located inside a non-ferromagnetic cylinder.
Level/tilt measurement
May be installed in the base of a machine with a magnet mounted pendulum fashion over the sensor. A change in state of the output as the magnet swings away from the sensor indicates that the machine is not level.
Remote conveyor sensing
May be mounted to the frame of the conveyor, with a magnet mounted on the tail pulley. When the magnet revolves past the sensor, it produces one output per revolution, providing an intermittent visual or audible signal at a remote location to assure stability. Any interruption of the conveyor motion will interfere with the normal signal and alert the operators.
Push button controls
Medical
Position sensor in hospital beds and medical equipment
May be used with a magnet mounted on the activator arm to determine the home or end-of-travel position of the equipment.
Medication bin monitor on portable drug carts
May be used to detect if a drug dispensing drawer is open or closed.
Tech Specifications
| Description |
Product Attribute |
| Manufacturer |
Honeywell |
| Product Category |
Board Mount Hall Effect / Magnetic Sensors |
| Type |
Unipolar |
| Operating Supply Current |
3.5 mA |
| Maximum Output Current |
8 mA |
| Operating Point Min/Max |
240 G to 460 G |
| Release Point Min/Max (Brp) |
135 G to 370 G |
| Operating Supply Voltage |
24 V |
| Minimum Operating Temperature |
- 40 °C |
| Maximum Operating Temperature |
+ 150 °C |
| Mounting Style |
SMD/SMT |
| Package / Case |
SOT-23-3 |
| Packaging |
Reel |
| Product Type |
Board Mount Hall Effect / Magnetic Sensors |
| Subcategory |
Sensors |
| Supply Voltage - Max |
24 V |
| Supply Voltage - Min |
3 V |
Order Guide
| catalog listing description |
| SS341RT |
Unipolar, digital Hall-effect sensor IC, high sensitivity, SOT-23 package, tape and reel packaging
(3000 units per reel) |
| SS343RT |
Unipolar, digital Hall-effect sensor IC, medium sensitivity, SOT-23 package, tape and reel packaging
(3000 units per reel) |
| SS349RT |
Unipolar, digital Hall-effect sensor IC, low sensitivity, SOT-23 package, tape and reel packaging
(3000 units per reel) |
| SS441R |
Unipolar, digital Hall-effect sensor IC, high sensitivity, flat TO-92-style package, bulk packaging
(1000 units per bag) |
| SS443R |
Unipolar, digital Hall-effect sensor IC, medium sensitivity, flat TO-92-style package, bulk packaging
(1000 units per bag) |
| SS449R |
Unipolar, digital Hall-effect sensor IC, low sensitivity, flat TO-92-style package, bulk packaging
(1000 units per bag) |
https://bnsens.en.made-in-china.com/product/rGXpBNUCEMhi/China-Honeywell-Unipolar-Digital-Hall-Effect-Sensor-ICs-SS340RT-SS440R-Series-SS449R.html
BNSENS (Nanjing) Sensor Technology Co., Ltd. is located in Nanjing, China. It is a high-tech enterprise specializing in the development, manufacturing and trade of sensor products. The company has brought together a group of outstanding technical experts in various fields such as automation, electronics, machinery and computers. All employees of the company have college degrees or above. It adopts the world-class management and operation model and 6 sigma quality system. At present, the company's main products are pressure, liquid level, flow, current, switches, etc. The company's users are all over the country, and some products have been exported to Japan, South Korea and Southeast Asia.
Since its inception, the company has been based on the technical accumulation and management standards of American sensor giants. It is composed of senior engineers and managers who have served in multinational companies for many years, and has rapidly developed various pressure sensors, transmitters, liquid level, flow meters, pressure switches, digital meters, current sensors, proximity switches and other products. After years of unremitting efforts, it has become one of the leading suppliers in the domestic automation industry. Our pressure transmitters can achieve an accuracy of more than 3/10, 000. The products have been widely used in oil, natural gas, electricity, chemical industry, metallurgy, building materials, food, light industry, environmental protection, aerospace, tap water, municipal and other industries.
It is a sensor science and technology innovation company that masters the core technology of MEMS chips. The company has a research and development center in Minnesota, USA. The leader is Dr. Pan Hanjin, a famous scientist in the sensor industry. Dr. Pan Hanjin has been deeply involved in the sensor industry for more than 20 years and is an expert in the sensor industry.
The company has a number of ASIC chips independently developed, which are widely used in industrial, automotive, home appliance and other markets.
BNSENS (Nanjing) Sensing Technology Co., Ltd. is a strategic partner of Honeywell in China. The two parties proposed a plan of East serving East and jointly developed several sensors specifically for the Chinese market. These sensors will be widely used in intelligent manufacturing, Internet of Things, artificial intelligence, and smart home fields. These sensors include: Magnetic sensors, temperature sensors, humidity sensors, force sensors, fire water pressure sensors, equipment vibration sensors, human body status monitoring sensors, motion sensors, etc.
History of BNSENS Company:
BNSENS is a company focusing on sensors, instruments, and electronic components. We are a young company, founded in 1999, just 25 years old, and we are still growing.
1999: The company's first pressure sensor was launched, mainly for the petroleum and petrochemical industries.
2002: The company expanded its product line and launched temperature sensors
2005: Started producing high-precision pressure sensors for the test and measurement market
2006: Became an official authorized agent of Honeywell
2009: Introduced the Six Sigma management system, and the product qualification rate was greatly improved
2010: Became a supplier of Emerson
2011: We started selling SICK sensors
2014: Introduced the sensor production line from Germany, developed more industrial control sensors, and cooperated with TSMC
2015: Cooperated with Siemens in Vietnam
2017: The factory moved to Nanjing High-tech Zone
2019: Became a national high-tech enterprise in China
2023: We started selling products from Infineon and Rohm
BNSENS, The Future Starts Here.
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