SM353LT

Product Introduction

Honeywell SM353LT is a nano-power omnipolar Hall sensor with only 310nA static current — nearly 1000× below typical μA-class micro-power Hall parts. Double the magnetic sensitivity of standard Hall sensors, push-pull output and a solid-state design replace reed switches in battery-powered smart meters, medical and industrial devices.

Core Advantages

• 310nA static current: extends battery life to 8+ years in meters and portable devices.
• 2× magnetic sensitivity: works through large assembly gaps, halves magnet size and cost.
• Push-pull output: single signal line straight to MCU IO — no pull-up resistor needed.
• Solid-state, no contacts: replaces reed switches — no contact wear, no missed counts.
• 1.65–5.5V supply: compatible with low-voltage portable medical and industrial controllers.

Cross Reference & Replacement

Cross-reference alternatives: Honeywell SM351LT (7G trigger for tight-gap designs), Diodes Inc AH3781 and TI DRV5032 nano-power Hall switches. SM353LT wins where battery life and wide gaps matter most.

Applications

FAQ

Q: How long does SM353LT extend battery life?

A: 310nA static current stretches meter battery life beyond 8 years versus under 3 years for typical μA-class Hall parts.

Q: Can SM353LT replace reed switches?

A: Yes — solid-state, contact-free detection survives millions of cycles and eliminates reed-switch missed counts.

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