SM351LT Hall Effect Sensor

SKU: BBV10000040

SM351LT is a high-precision Hall effect sensor. It features a Push-Pull output structure and exhibits omnipolar characteristics, capable of detecting both polarities of the magnetic field.

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Key Features

  • Lid, door and drawer position detection.
  • Omnipolar sensing: Activates with either pole from a magnet.
  • Push-pull output: Does not require external pull-up resistor.
  • Power Good Led (D1) and Output indicator Led (D2).

Technical Specifications

ItemSM351LT
Voltage Supply 3.3V – 5V
Current Output150uA
Functions
Magnetoresistive Sensor
Output TypePush-Pull
Operate Sensing RangeTyp: 7 Gauss
Operating Temperature

-40°C to 85°C
Board Dimensions 20 x 20 mm

Board Pinout

PIN NumberPIN NameDescription
15VPositive Power Supply
2OutputHall Effect Sensor Output
3GNDNegative Power Supply
PIN NumberPIN NameDescription
1PPS Time pulse signal
2N/F Shutdown control, keep high level during
normal
3RST External reset input, internal pull-up, it must be
left.
4GPS-BDS
When HIGH level or floating, it is BDS+GPS.
(Actually this pin is 3.3V power pin, middle pin
is gps io pin; when you short-jumper it
together io pin will be HIGH. )
5GLNSS-GPS
When LOW level, it is GPS+GLONASS.
(Actually this pin is GND power pin, middle pin
is gps io pin; when you short-jumper it
together io pin will be LOW. )