Product Overview
Honeywell's Magnetoresistive Sensor ICs, Standard Power Series (SM351RT, SM451R, SM353RT, SM453R) are ultra-sensitive, solid-state devices designed for durable and reliable speed or position sensing in standard power applications (3 Vdc to 24 Vdc). Offering ultra-high sensitivity (up to 11 G max.), these sensors respond to either pole of a magnet, simplifying installation and reducing system costs. Their non-contact, no-glass design enhances switching capability, while the high sensitivity lowers magnet costs and simplifies design-in. Available in SOT-23 and flat TO-92-style packages, they feature a wide operating temperature range and omnipolar operation.
Product Attributes
- Brand: Honeywell
- Certifications: RoHS-compliant materials meet Directive 2002/95/EC
Technical Specifications
| Model | Magnetic Sensitivity (Operate) | Magnetic Sensitivity (Release) | Magnetic Sensitivity (Differential) | Package Style | Supply Voltage Range | Temperature Range |
| SM351RT, SM451R | 7 G (typical), 11 G (maximum) | 4.8 G (typical), 9 G (maximum) | 2.2 G (typical), 18 G (maximum) | SOT-23 (SM351RT), Flat TO-92-style (SM451R) | 3 Vdc to 24 Vdc | -40 C to 85 C [-40 F to 185 F] |
| SM353RT, SM453R | 14 G (typical), 20 G (maximum) | 9.3 G (typical), 18 G (maximum) | 5.7 G (typical), 18 G (maximum) | SOT-23 (SM353RT), Flat TO-92-style (SM453R) | 3 Vdc to 24 Vdc | -40 C to 85 C [-40 F to 185 F] |
| Characteristic | Condition | Min. | Typ. | Max. | Unit |
| Supply voltage (Vcc) | Vcc reference to ground | 3 | 12 | 24 | V |
| Supply current (off) | Vcc = 5 V, T = 25 C [77 F] | 2.5 | 5 | mA | |
| Supply current (on) | Vcc = 5 V, T = 25 C [77 F] | 4 | 8 | mA | |
| Start-up time | Vcc > 3 V | 10 | s | ||
| Output leakage current | Vcc = 24, off | 10 | A | ||
| Output saturation voltage | load current = 20 mA | 500 | mV | ||
| Rise time | Vcc = 5 V, R = 2 kOhm, C = 20 pF | 1.5 | s | ||
| Fall time | Vcc = 5 V, R = 2 kOhm, C = 20 pF | 1.5 | s |
| Characteristic | Condition | Min. | Max. | Unit |
| Operating temperature ambient | -40 [-40] | 85 [185] | C [F] | |
| Soldering temperature: SM351RT, SM353RT | ambient applied for < 10 s | 245 [473] | C [F] | |
| Soldering temperature: SM451R, SM453R | ambient applied for < 3 s | 260 [500] | C [F] | |
| Supply voltage (Vs) | Absolute maximum | -26 | 26 | V |
| Load current output sinking (open collector) | Absolute maximum | 40 | mA |
2410122105_Honeywell-SM451R_C1559760.pdf
Please Use Our Online Inquiry Contact Form Below If You Have Any Questions, Our Team Will Get Back To You As Soon As Possible
