US5881LSE-AAA-000-RE Melexis Switch (SOT23 (3-Pin)) In Stock
Melexis US5881LSE-AAA-000-RE is a unipolar Hall-effect switch IC in a TSOT-3 (SOT-23) package with a magnetic field operate range of 9.5 to 30 mT and 4.3 mT hysteresis. It features reverse polarity protection for robust operation in automotive and industrial proximity sensing. Available from stock with worldwide shipping.
- Manufacturer
- Melexis
- Package
- SOT23 (3-Pin)
- Pin Count
- 3
- Lifecycle
- ACTIVE
- Datasheet
- US5881LSE-AAA-000-RE Datasheet PDF
- Category
- Switch
- Temp Range
- -40.0°C to 150.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Unipolar Hall-effect sensing with operate range 9.5 mT to 30 mT and 4.3 mT hysteresis for stable switching without output chatter
- Reverse polarity protection safeguards the IC against wiring errors in automotive and industrial 12 V supply environments
- Ultra-compact TSOT-3 (SOT-23) package measuring 2.9 mm x 1.6 mm x 0.875 mm enables placement in tight PCB areas
- Wide magnetic field range up to 30 mT supports compatibility with a broad range of permanent magnet strengths and air gaps
Applications
US5881LSE-AAA-000-RE is ideal for proximity sensing, speed detection, and position measurement in automotive applications such as seat position sensors, gear selectors, and ABS reluctor ring sensing, where reliable magnet detection in the 9.5 mT to 30 mT range is required. Its reverse polarity protection makes it a robust choice for 12 V automotive wiring harnesses where polarity errors during installation can occur. The compact TSOT-3 package also suits industrial end-of-travel sensing in servo motors and robotic actuators operating in environments from -40 degrees C to 150 degrees C.
Specifications
| YTEOL | 6 |
| Additional Feature | REVERSE POLARITY PROTECTION |
| Body Breadth | 1.6mm |
| Body Height | 0.875mm |
| Body Length or Diameter | 2.9mm |
| Housing | PLASTIC |
| Hysteresis | 4.3mT |
| Input Mode | UNIPOLAR |
| Magnetic Field Range-Max | 30mT |
| Magnetic Field Range-Min | 9.5mT |
| Mounting Feature | SURFACE MOUNT |
| Operating Current-Max | 5mA |
| Output | OPEN-DRAIN |
| Output Interface Type | 3-WIRE INTERFACE |
| Output Type | CURRENT OUTPUT |
| Package Equivalence Code | TO-236 |
| Package Shape/Style | RECTANGULAR |
| Screening Level | TS 16949 |
| Sensors/Transducers Type | MAGNETIC FIELD SENSOR,HALL EFFECT |
| Supply Voltage-Max | 24V |
| Supply Voltage-Min | 3.5V |
| Surface Mount | YES |
| Technology | CMOS |
| Terminal Finish | MATTE TIN |
| Termination Type | SOLDER |
| Package | SOT23 (3-Pin) |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What magnetic field strength is required to switch US5881LSE-AAA-000-RE, and how much hysteresis does it provide?
US5881LSE-AAA-000-RE operates with a magnetic field operate threshold between 9.5 mT and 30 mT, meaning any magnet producing a field in that range at the sensing face will switch the output. It includes 4.3 mT of hysteresis, which creates a dead band between the turn-on and turn-off field levels. This 4.3 mT hysteresis prevents output chattering when the magnet is at the threshold position, ensuring clean transitions in vibrating environments such as automotive underhood locations.
How does reverse polarity protection in US5881LSE-AAA-000-RE benefit automotive wiring harness designs?
US5881LSE-AAA-000-RE includes internal reverse polarity protection circuitry that prevents damage if the supply voltage is connected with reversed polarity, a common wiring error during vehicle assembly or repair. In 12 V automotive electrical systems, supply voltages can range from 9 V to 16 V and polarity mistakes occur during field maintenance. Without protection, a 12 V reverse connection would immediately destroy a standard Hall-effect switch IC, but US5881LSE-AAA-000-RE's protection circuit limits the reverse current, preserving the device and the surrounding circuit.
In what temperature range does US5881LSE-AAA-000-RE operate, and is it suitable for under-hood automotive placement?
US5881LSE-AAA-000-RE is rated for an operating temperature range of -40 degrees C to 150 degrees C, which covers the extreme cold start conditions and high under-hood temperatures encountered in automotive applications. This wide range meets the AEC-Q100 style qualification requirements for automotive-grade Hall-effect switches used near engines and transmissions. The plastic TSOT-3 housing with a body height of only 0.875 mm also allows installation in narrow sensor housings close to hot engine components.
How does US5881LSE-AAA-000-RE's TSOT-3 package size compare to a standard SOT-89 Hall sensor, and what PCB layout benefit does this provide?
US5881LSE-AAA-000-RE in TSOT-3 measures 2.9 mm in length, 1.6 mm in breadth, and 0.875 mm in height, compared to a typical SOT-89 package at 4.5 mm x 2.5 mm x 1.5 mm. This represents a footprint reduction of approximately 65 percent by area, enabling the Hall sensor to be placed in tightly spaced PCB locations such as within a motor control board segment measuring less than 5 mm x 5 mm. The smaller package also reduces parasitic inductance on the VCC and GND pins, improving supply decoupling at the IC.
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About Melexis
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