SM351LT

Product Introduction

Honeywell SM351LT is the ultra-sensitive sibling of the nano-power Hall sensor family: typical trigger field only 7G (11G max) with 360nA average current. It doubles detection distance, allows smaller ferrite magnets and cuts magnetic BOM cost in battery devices with 3–8 year service life.

Core Advantages

• 7G ultra-high sensitivity: doubles detection distance — generous air-gap margin in enclosures.
• 360nA average current: 3–8 year battery life for metering and portable devices.
• Smaller, cheaper magnets: works with small ferrite magnets instead of expensive rare-earth parts.
• Push-pull output: direct MCU IO connection — fewer parts, simpler PCB.
• 1.65–5.5V supply: low-voltage compatibility for portable medical and consumer designs.

Cross Reference & Replacement

Cross-reference alternatives: Honeywell SM353LT (310nA for extreme battery life), Diodes AH3781 and TI DRV5032. SM351LT is the pick when gap margin and magnet cost dominate.

Applications

FAQ

Q: What trigger field does SM351LT need?

A: Typically 7G with 11G maximum — about half of standard Hall switches, doubling the usable detection distance.

Q: Can SM351LT use cheap ferrite magnets?

A: Yes — the 7G sensitivity leaves ample air-gap margin, so small ferrite magnets replace expensive rare-earth magnets.

Related Products

• → SM353LT
• → Hall Sensors
• → All Sensors
• → Honeywell Products
• → Browse All Products