Diodes Incorporated

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X2 DFN1010 4

Image shown is for reference only. Actual package may vary. Refer to the product data sheet for package details.

X2 DFN1410 4

Image shown is for reference only. Actual package may vary. Refer to the product data sheet for package details.

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Ultra-Low Power Digital Unipolar Hall-Effect Switch

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The AH1381/AH1382/AH1383 is an ultra-low power digital Unipolar Hall effect switch IC from Diodes Incorporated’s broad Hall effect switches family. Thanks to the hibernating clocking system, the average supply current is only 1.6μA at 3V, which makes the AH1381/AH1382/AH1383 perfectly fit battery-powered consumer products, gas or water meters, smoke detectors and IoT devices. The wider range of the supply voltage (1.6V to 5.5V) extends battery operating time and supports low-voltage system microcontrollers, which provides great flexibility for system design. The advanced chopper stabilized design provides superior stability on switch operating point over temperature and supply voltage. The high ESD level up to 8kV helps to improve the system robustness.

The output is activated with south pole of sufficient magnetic field strength. When the magnetic flux density (B) perpendicular to the package is larger than operate point (BOPS), the output will be turned on (pulled low) and held until B is lower than release point (BRPS).

The devices are packaged in SOT23 (Type S) and small low profile X2-DFN1410-4 and X2-DFN1010-4 (Type B).


  • Unipolar Operation (South Pole)
  • Supply Voltage of 1.6V to 5.5V
  • Micro Power Operation
  • Chopper Stabilized Design Provides:
    • Superior Temperature Stability
    • Minimal Switch Point Drift
    • Enhanced Immunity to Physical Stress
  • No External Pullup Resistors Required
  • Good RF Noise Immunity
  • -40°C to +85°C Operating Temperature
  • High ESD Capability of 8kV (Human Body Model)
  • Small Low Profile SOT23 (Type S), X2-DFN1410-4 and X2-DFN1010-4 (Type B) Packages
  • Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
  • Halogen and Antimony Free. “Green” Device (Note 3)
  • For automotive applications requiring specific change control (i.e. parts qualified to AEC-Q100/101/104/200, PPAP capable, and manufactured in IATF 16949 certified facilities), please contact us or your local Diodes representative. https://www.diodes.com/quality/product-definitions/


  • Smart covers for cellular phones, tablets, laptops, Chromebooks
  • Open and close detect for TWS, digital still/video cameras and handheld gaming consoles
  • Medical devices, IoT systems
  • Level, proximity and position switches
  • E-locks, smoke detectors, appliances
  • Doors, lids and tray position switches
  • Home appliances such as washing machines, refrigerators
  • Industrial applications such as smart meters, E-meters, power tools

Product Specifications

Product Parameters

Compliance(Only Automotive supports PPAP) Standard
AEC Qualified No
Type Unipolar
Outputs Single
Output Type Push-Pull
Active Output State (B > Bop) Low
Inactive Output State (B < Brp) High
Operating Voltage (V) 1.6 to 5.5
Average Supply Current (mA) 0.0016
Min Operating Point Bop (Bops +ve/ Bopn -ve) (Gauss) 6
Typ Operating Point Bop (Bops +ve/ Bopn -ve) (Gauss) 18
Max Operating Point Bop (Bops +ve/ Bopn -ve) (Gauss) 30
Min Release Point Brp (Brps +ve/ Brpn -ve) (Gauss) 2
Typ Release Point Brp (Brps +ve/ Brpn -ve) (Gauss) 11
Max Release Point Brp (Brps +ve/ Brpn -ve) (Gauss) 24
Output Current Capability (mA) 7
Operating Ambient Temperature (°C) -40 to 85

Technical Documents

Recommended Soldering Techniques