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Specifications
Operating Current:
360nA
Operation Points:
7Gs
Release Points:
5Gs
Operating Temperature:
-40℃~+85℃
Voltage - Supply:
1.65V~5.5V
Mfr. Part #:
SM351LT
Package:
SOT-23
Key Attributes
Model Number:
SM351LT
Product Description
Product Overview
The Honeywell Nanopower Series Magnetoresistive (MR) Sensor ICs are highly sensitive devices designed for applications with large air gaps, small magnetic fields, and low power requirements. They offer simplified installation due to omnipolar sensing and improved energy efficiency with extremely low average current consumption, push-pull outputs (no pull-up resistor needed), and low operating voltages down to 1.65V. Available in two models, SM351LT and SM353LT, they come in ultra-small SOT-23 surface-mount packages on tape and reel for automated assembly.
Product Attributes
- Brand: Honeywell
- Series: Nanopower
- Certifications: RoHS compliant (Directive 2002/95/EC)
- Packaging: SOT-23, Tape and Reel (3000 per reel)
Technical Specifications
| Model | Parameter | Condition | Min | Typical | Max | Unit |
| SM351LT | Sensitivity | 7 | 11 | G | ||
| Average Current Consumption | 360 | 6640 | nA | |||
| Operating Voltage (Vs) | Vs to Ground | 1.65 | 1.8 | 5.5 | Vdc | |
| Wake Current | 0.3 | 1 | mA | |||
| Sleep Current | 0.2 | 0.8 | A | |||
| Wake Time | 15 | - | s | |||
| Sleep Time | 30 | 180 | ms | |||
| Output Low (VOL) | Load Current = 100 A | 0 | -0.15 | 0.15 Vs | V | |
| Output High (VOH) | Load Current = 100 A | Vs - 0.15 | Vs - 0.03 | - | V | |
| Operating Temperature | Ambient | -40 | - | 85 | C | |
| Magnetic Hysteresis | 2 | - | - | G | ||
| SM353LT | Sensitivity | 14 | 20 | G | ||
| Average Current Consumption | 310 | 6350 | nA | |||
| Operating Voltage (Vs) | Vs to Ground | 1.65 | 1.8 | 5.5 | Vdc | |
| Wake Current | 0.8 | 5 | mA | |||
| Sleep Current | 0.2 | 0.8 | A | |||
| Wake Time | 15 | - | s | |||
| Sleep Time | 30 | 180 | ms | |||
| Output Low (VOL) | Load Current = 100 A | 0 | -0.15 | 0.15 Vs | V | |
| Output High (VOH) | Load Current = 100 A | Vs - 0.15 | Vs - 0.03 | - | V | |
| Operating Temperature | Ambient | -40 | - | 85 | C | |
| Magnetic Hysteresis | 4 | - | - | G |
Potential Application Areas
Industrial
- Mobile equipment (e.g., handheld computing devices and scanners)
- Water, electricity, and gas meters
- Building access control; replacing reed switches in battery-powered security systems
- Industrial smoke detectors
Medical
- Fitness equipment
- Infusion pumps
- Drawer position sensing (e.g., medical cabinets)
- Hospital beds
White Goods
- Lid, door, and drawer position detection
- Fluid flow
Medium Consumer Electronics
- Battery-optimized position sensors
1811141121_Honeywell-SM351LT_C80830.pdf
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