Honeywell’s Magnetoresistive Sensor ICs, Standard Power Series, are sensitive devices designed for customers who need a durable and reliable speed or position sensor for large air gaps or small magnetic fields in standard power (3 Vdc to 24 Vdc) applications. Unlike reed switches and other magnetic sensors, Honeywell’s solid state design offers a sensitivity of 11 Gauss max., making it the highest sensitivity sensor in its class for standard powered applications.
VALUE TO CUSTOMERS
- Durable and reliable due to magnetic solid state, non-contact, no-glass design which enhance switching capability
- Cost-effective and flexible due to the sensor IC’s ultra-high sensitivity—the highest sensitivity sensor in its class for standard powered applications—which lowers the customer’s cost of magnets and simplifies design-in
- Simplifies design-in for wired applications due to its supply voltage range, omnipolar operation, SOT-23 and flat TO-92-style package options and wide operating temperature range
FEATURES
- Magnetic sensitivities:
- Ultra-high sensitivity (SM351RT and SM451R): For applications requiring ultra-high magnetic sensitivity (7 G typical operate, 11 G maximum operate)
- Very high sensitivity (SM353RT and SM453R): For applications requiring very high magnetic sensitivity (14 G typical operate, 20 G maximum operate)
- Package styles:
- SOT-23 (SM351RT, SM353RT)
- Flat TO-92-style (SM451R, SM453R)
- Supply voltage range 3 Vdc to 24 Vdc
- Omnipolar sensing activates with either pole from a magnet
- Temperature range -40 °C to 85 °C [-40 °F to 185 °F]
- SOT-23 supplied on tape and reel (3000 units per reel)
- RoHS-compliant materials meet Directive 2002/95/EC
POTENTIAL APPLICATIONS
Industrial
- High frequency flow sensing in HVAC, water, fuel meters, and gas utility meters
- Anti-tamper detection in water, electric, and gas utility meters
- Liquid level detection
- Motor RPM sensing
- In-cylinder position sensing
Medical
- RPM sensing in exercise and rehabilitation equipment
- Magnetic interrupt in exercise and rehabilitation equipment
- Absence/presence detection in infusion pumps
- Position sensing of medication dispensing cabinet drawers
- Incline position sensing in hospital beds
White Goods
- Lid, door and drawer position detection
- Fluid flow detection
- Liquid level detection