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Ultra High Sensitivity Micropower Omnipolar Hall Effect Switch

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The AH9246 is an ultra high sensitivity Hall-effect switch with internal pull-up resistor on the output, designed for battery operated handheld equipments to industrial applications.

A chopper stabilized architecture improves stability of magnetic switch points over the whole operating range. A sleep-awake logic controls the sleep and awake time to reduce the average operating current of the device. During the awake time, the output is changed with the magnetic flux density. During the sleep time, the output is latched in its previous state and the current consumption reduces to 4µA typical at 3V.

The output can be switched on with either north or south pole of sufficient strength. If the magnetic flux density perpendicular to the part marking surface is larger than operating point (BOP), the output will be turned on; if it is less than releasing point (BRP), the output will be turned off.

The AH9246 is available in industry standard TO92S and SC59 packages.


  • Cover Switch in Notebook PC/PDA
  • Handheld Wireless Application Awake Switch
  • Doors, Lids, Covers and Tray Position Detect Switches
  • Liquid Level Detection
  • Battery Powered Consumer, Home Appliances and Industrial Applications


  • Omnipolar Operation (Switching with North or South Poles)
  • Micropower Operation
  • Built in Pull-up Resistor on the Output
  • 2.5V to 5.5V Power Supply
  • Stabilized Chopper
  • Superior Temperature Stability
  • Digital Output Signal
  • -40°C to +85°C Operating Temperature
  • ESD (HBM): 6000V
  • Small Low Profile Industry Standard SC59 and TO92S Packages
  • Totally Lead-Free & Fully RoHS Compliant
  • Halogen and Antimony Free. “Green” Device

Product Specifications

Product Parameters

Qualified to AECQ10x No
Automotive Compliant PPAP No
# Outputs 1
Output Type Internal Pull-Up
Active High or Low Low
Sensitivity High
Operating Voltage 2.5 to 5.5 V
Average Supply Current 8 µA
Min Operating Point ±Bop (Guass) 9
Typ Operating Point ±Bop (Guass) 18
Max Operating Point ±Bop (Guass) 27
Min Release Point ±Brp (Guass) 4
Typ Release Point ±Brp (Guass) 12
Max Release Point ±Brp (Guass) 22
Operating Ambient Temperature Range -40 to 85 °C

Related Content

TO92 (Type B)


Technical Documents

Recommended Soldering Techniques


Orderable Part Number Authorized Distributor Quantity Inventory Date Buy Online Region
AH9246-P-B Avnet EU 400 8/8/2020 Buy Now Germany
AH9246-P-B Arrow Electronics 544 8/8/2020 Buy Now United States
AH9246-P-B Arrow Electronics 13830 8/8/2020 Buy Now United States
AH9246-P-B Digi-Key Electronics 9033 8/8/2020 Buy Now United States
AH9246-P-B Farnell, An Avnet Company 125 8/8/2020 Buy Now England
AH9246-P-B Mouser Electronics Inc. 14827 8/8/2020 Buy Now United States
AH9246-P-B Future Electronics 1000 8/7/2020 Buy Now Canada
AH9246-W-7 Arrow Electronics 98 8/8/2020 Buy Now United States
AH9246-W-7 Arrow Electronics Central EU 873 8/8/2020 Buy Now Germany
AH9246-W-7 Digi-Key Electronics 6834 8/8/2020 Buy Now United States
AH9246-W-7 Farnell, An Avnet Company 2830 8/8/2020 Buy Now England
AH9246-W-7 Mouser Electronics Inc. 32046 8/8/2020 Buy Now United States


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