component

MH281KSO

Public Made by Adom

by adom

MST(Magnesensor Tech (MST)) Magnetic Sensors, SOT-23-3L. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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MH281KSO

MST(Magnesensor Tech (MST)) · Magnetic Sensors · SOT-23-3L

MH281KSO from MST(Magnesensor Tech (MST)), in a SOT-23-3L. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 VDD power_in Supply voltage pin, operating range 3.0 V to 24.0 V with an absolute maximum of 27 V; do not apply reverse voltage.
2 OUT output Open-drain output that switches on above BOP and off below BRP, rated up to 27 V and 50 mA absolute maximum, with a 500 mV maximum saturation voltage at 20 mA; do not apply reverse voltage.
3 GND power_in Ground reference pin for the supply and output.

Key specifications

Parameter Value
Manufacturer MST(Magnesensor Tech (MST))
Package SOT-23-3L
Category Sensors
Pins 3

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Supply Voltage VDD 3 24 V Operating 3
Supply Current IDD 2.5 5 mA B<BOP 3
Output Saturation Voltage VSat 500 mV IOUT = 20 mA, B>BOP 3
Output Leakage Current Ioff 10 uA IOFF B<BRP, VOUT = 20V 3
Operate Point BOP 175 250 Gauss TA=+25℃, VDD=12V 3
Release Point BRP 95 Gauss TA=+25℃, VDD=12V 3
Hysteresis BHYS 45 Gauss TA=+25℃, VDD=12V 3
Output Rise Time TR 0.04 uS RL=1kΩ, CL =20pF 3
Output Fall Time TF 0.18 uS RL=1kΩ; CL =20pF 3
Supply voltage VDD 27 V Ta=25℃ 2
Output Voltage Vo 27 V Ta=25℃ 2
Reverse Voltage VDD, VOUT -0.3 V Ta=25℃ 2
Output current IOUT 50 mA Ta=25℃ 2
Operating Temperature Range Ta -40 125 ℃ K version 2
Storage temperature range Ts -55 150 ℃ 2
Maximum Junction Temp Tj 150 ℃ 2
Thermal Resistance junction-ambient θja 543 ℃/W SO package 2
Thermal Resistance junction-case θjc 410 ℃/W SO package 2
Package Power Dissipation PD 230 mW SO package 2

Materials and finish

As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).

Part Material Colour / plating Datasheet says Page
contacts tin UA:TO-92S,VK:TO-92S(4pin),VF:TO-92S(5pin),SO:SOT-23, SQ:QFN-3,ST:TSOT-23,SN:SOT-553,SF:SOT-89(5pin) 1

CAD (KiCad official)

  • Symbol: MH281KSO
  • Footprint: Package_TO_SOT_SMD:SOT-23-3
  • 3D model: SOT-23-3L (KiCad packages3D, STEP)
  • 3D model files: mh281kso-etched.step / mh281kso-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mh281kso.step / mh281kso.glb are the bare package body.

Provenance

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

  • Datasheet: MST(Magnesensor Tech (MST)) datasheet (5 pp, sha256 000000166c84d868, retrieved 2026-10-22, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF