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HAL9303RSO

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by Ray

Hallwee Linear Hall Sensors, SOT-23-3L. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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Datasheet

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Contents

README

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HAL9303RSO

Hallwee · Linear Hall Sensors · SOT-23-3L

HAL9303RSO from Hallwee, in a SOT-23-3L. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 VDD power_in Power supply pin. Operating range 1.6 V to 3.6 V; typical 3.3 V. Supply current IDD approximately 1.5 mA at 3.3 V (0.8 mA typ at 1.8 V). Absolute maximum 7 V. A 0.1 uF (104) decoupling capacitor to GND is recommended.
2 GND power_in Ground / return pin.
3 OUT output Analog Hall-effect output voltage. Rail-to-rail; quiescent output is VDD/2 at zero field (typ 1.65 V at VDD=3.3 V). Sensitivity ~4.1 mV/Gs at VDD=3.3 V (2.2 mV/Gs at 1.8 V). Output resistance up to 10 kOhm; recommended 0.1 uF (104) capacitor to GND on the output.

Key specifications

Parameter Value
Manufacturer Hallwee
Package SOT-23-3L
Category Magnetic Sensors
Pins 3

Ordering variants

Same part, different packaging or reel option.

  • HAL9303RSO
  • HAL9303RSOSW
  • HAL9303RSOUA

CAD (KiCad official)

  • Symbol: HAL9303RSO
  • Footprint: Package_TO_SOT_SMD:SOT-23-3
  • 3D model: SOT-23-3L (KiCad packages3D, STEP)

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Hallwee datasheet (5 pp, sha256 2df30b9db96dae92, retrieved 2026-08-17, tier: lcsc)
  • Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
  • Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF