component
MH251EST
Public Made by Adomby adom
MST Magnesensor Tech MST Hall Switches, TSOT-23-3L. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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Contents
README
markdownMH251EST
MST Magnesensor Tech MST · Hall Switches · TSOT-23-3L
MH251EST from MST Magnesensor Tech MST, in a TSOT-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 input for operating voltage 1.65 V to 3.5 V; reverse VDD protection is not included, so a 100 Ω series resistor in VDD is recommended for reverse-voltage protection. |
| 2 | Output | output | Totem-pole CMOS output with output current limited to 1 mA absolute maximum, VOH of VDD-0.2 V and VOL of 0.2 V at 0.5 mA, and output leakage of 1 µA max when off. |
| 3 | GND | power_in | Ground reference pin for the device supply and output. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | MST Magnesensor Tech MST |
| Package | TSOT-23-3L |
| Category | Magnetic 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 (Operating) | VDD | 1.65 | 3.5 | V | Ta=25℃, VDD=1.8V; Operating | 3 | |
| Supply Current, Awake State | IDD | 1.4 | 3 | mA | Ta=25℃, VDD=1.8V; Awake State | 3 | |
| Supply Current, Sleep State | IDD | 3.6 | 7 | μA | Ta=25℃, VDD=1.8V; Sleep State | 3 | |
| Supply Current, Average | IDD | 5 | 10 | μA | Ta=25℃, VDD=1.8V; Average | 3 | |
| Output Leakage Current | Ioff | 1 | uA | Ta=25℃, VDD=1.8V; Output off | 3 | ||
| Output Low Voltage | VOL | 0.2 | V | Ta=25℃, VDD=1.8V; IOUT=0.5mA(Sink) | 3 | ||
| Awake mode time | Taw | 40 | 80 | uS | Ta=25℃, VDD=1.8V; Operating | 3 | |
| Sleep mode time | TSL | 40 | 80 | mS | Ta=25℃, VDD=1.8V; Operating | 3 | |
| Duty Cycle | D,C | 0.1 | % | Ta=25℃, VDD=1.8V | 3 | ||
| Electro-Static Discharge HBM | HBM | 4 | KV | 3 | |||
| Operate Point, S pole | BOPS | 30 | 55 | Gauss | Ta=25℃, VDD=1.8V; S pole to branded side, B > BOP, Vout On | 3 | |
| Operate Point, N pole | BOPN | -55 | -30 | Gauss | Ta=25℃, VDD=1.8V; N pole to branded side, B > BOP, Vout On | 3 | |
| Release Point, S pole | BRPS | 10 | 20 | Gauss | Ta=25℃, VDD=1.8V; S pole to branded side, B < BRP, Vout Off | 3 | |
| Release Point, N pole | BRPN | -20 | -10 | Gauss | Ta=25℃, VDD=1.8V; N pole to branded side, B < BRP, Vout Off | 3 | |
| Hysteresis | BHYS | 10 | Gauss | Ta=25℃, VDD=1.8V; /BOPx - BRPx/ | 3 | ||
| Supply Voltage (Absolute Maximum) | VDD | 4.5 | V | Ta=25℃ | 3 | ||
| Output Voltage (Absolute Maximum) | Vout | 4.5 | V | Ta=25℃ | 3 | ||
| Reverse Voltage | (VDD) (VOUT) | -0.3 | V | Ta=25℃ | 3 | ||
| Output Current (Absolute Maximum) | IOUT | 1 | mA | Ta=25℃ | 3 | ||
| Operating Temperature Range | Ta | -40 | 85 | ℃ | 3 | ||
| Storage Temperature Range | Ts | -65 | 150 | ℃ | 3 | ||
| Maximum Junction Temperature | Tj | 150 | ℃ | 3 | |||
| Package Power Dissipation (ST) | PD | 400 | mW | ST (TSOT-23) package | 3 | ||
| Thermal Resistance, Junction-to-Ambient (ST) | θJA | 310 | ℃/W | ST (TSOT-23) package | 3 | ||
| Thermal Resistance, Junction-to-Case (ST) | θJC | 223 | ℃/W | ST (TSOT-23) package | 3 |
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) | 2 |
CAD (KiCad official)
- Symbol:
MH251EST - Footprint:
Package_TO_SOT_SMD:SOT-23-3 - 3D model: TSOT-23-3L (KiCad packages3D, STEP)
- 3D model files:
mh251est-etched.step/mh251est-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mh251est.step/mh251est.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: MST Magnesensor Tech MST datasheet (6 pp, sha256
a4d230726c918181, retrieved 2026-10-18, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-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).