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Silicon Labs 1 Axis Surface Hall Effect Sensor CMOS Technology 1.71V-5.5V 3-Pin SOT-23 SI7201-B-32-IV
Specifications
| Country of Origin | India |
|---|---|
| Brand | Silicon Labs |
| Response time | 8.8μs |
| Height | 1.15mm |
| Length | 2.75mm |
| Model | SI7201-B-32-IV |
| SENSITIVITY | 1.1mT |
| Technology | CMOS |
| Sensor Type | Hall Effect Sensors |
| Width | 1.6mm |
| Mount Type | Surface |
| Series | Si720X |
| Maximum Operating Temperature | 125°C |
| Package Type | SOT-23 |
| Minimum Operating Temperature | -40°C |
| Number of axis | 1 |
| Pin Count | 3 |
| Automotive Standard | AEC-Q100 |
| Maximum Supply Voltage | 5.5V |
| Minimum Supply Voltage | 1.71V |
| Supply Current | 400nA |
| Magnetic Type | Latch |
| Maximum Frequency Response | 113000Hz |
| Minimum Frequency Response | 5Hz |
Key Features
- The sensor is designed for omnipolar switching with high sensitivity of 1.1mT.
- Operates efficiently over a wide temperature range from -40°C to 125°C.
- Low supply current consumption of 400nA allows energy-efficient applications.
- High-frequency response capabilities from 5Hz up to 113kHz enable rapid sensing tasks.
- Includes automotive standard AEC-Q100 for reliability in demanding environments.
- Compact dimensions of 2.75mm length, 1.6mm width, and 1.15mm height enable surface mount PCB integration.
- Ideal replacement for reed switches in consumer electronics and security systems.
- Suitable for position sensing in HVAC controls, door locks, fluid level sensing, and BLDC motor control.
Product Description
Silicon Labs SI7201-B-32-IV is a 1 axis surface Hall Effect sensor built on CMOS technology offering reliable magnetic switch and latch functionality within a small footprint. It features a low operating voltage range from 1.71 V to 5.5 V and comes in a 3-pin SOT-23 surface mount package optimized for PCB assembly. The device supports omnipolar switching, making it versatile for detecting magnetic fields of either polarity.
This sensor boasts a sensitivity of 1.1mT and an extremely low supply current of just 400nA, making it suitable for battery-powered and low-power applications. Its operating temperature range from -40°C to 125°C and automotive grade AEC-Q100 compliance ensure robust performance in harsh industrial and automotive environments.
With high-frequency performance spanning 5 Hz to 113 kHz and a rapid response time of 8.8 microseconds, the SI7201-B-32-IV enables high precision in motion and position sensing scenarios such as HVAC knob position detection, door locking mechanisms, camera image stabilization, and brushless DC motor control.
The compact physical dimensions of 2.75mm length, 1.6mm width, and 1.15mm height allow efficient use of PCB real estate while ensuring durability and ease of integration in electronic assemblies.
The sensor’s omnipolar switch capability replaces fragile reed switches for improved reliability. Ideal for consumer, security, industrial, and automotive sensing applications requiring small, durable, and sensitive magnetic position detection.
Automotive grade certification (AEC-Q100) ensures it meets stringent quality standards. Wide temperature tolerance suits various environmental conditions from cold weather to high heat situations. Extremely low power operation supports battery-driven and portable systems.
Surface mount design simplifies manufacturing process and device miniaturization.
Applications for the SI7201-B-32-IV include fluid level sensing, control knobs and selector switches, camera autofocus, and general-purpose mechanical position sensing within industrial, automotive, and commercial electronics.
Explore similar dependable Hall Effect Sensors and sensor IC components at EnvMart to support your electronics design and manufacturing needs.
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