Diodes Menu Close
Back to Inactve Datasheet Archive

AH173 (Not Recommended for new design)

NRND = Not Recommended for New Design

High Temperature High and Medium Sensitivity Hall Effect Latches

Contact Sales

Log in or register to manage email notifications about changes to datasheets or PCNs for this part.


AH173 is a single-digital-output Hall-effect sensor with pull-up resistor for high temperature operation. The device includes an on-chip Hall voltage generator for magnetic sensing, an amplifier to amplify Hall voltage, and a comparator to provide switching hysteresis for noise rejection, and an output driver with a pull-up resistor (Rpu). An internal band-gap regulator is used to provide temperature compensated supply voltage for internal circuits and allows a wide operating supply range. While the magnetic flux density (B) is larger than operate point (Bop), the OUT pin turns on (low). If B moves toward release point (Brp), the OUT pin is latched “on” state prior to B < Brp. When B < Brp, the OUT pin goes into “off” state.


  • Bipolar Hall Effect Latch Sensor
  • 3V to 20V DC Operation Voltage
  • Built-in Pull-Up Resistor
  • 25mA Output Sink Current
  • Operating Temperature: -40°C ~ +125°C
  • Lead Free Packages: SC59-3L and SIP-3L
  • SC59-3L (commonly known as SOT23 in Asia): Available in “Green” Molding Compound (No Br, Sb)
  • Lead Free Finish/ RoHS Compliant


  • Rotor Position Sensing
  • Current Switch
  • Encoder
  • RPM Detection

Product Specifications

Product Parameters

Compliance (Only Automotive supports PPAP) No
Average Supply Current (µA) 3.5
Operating Ambient Temperature (°C) -40 to 125
Operating Point Bop (Bops +ve/ Bopn -ve) Gauss (Max) 60, 80
Operating Point Bop (Bops +ve/ Bopn -ve) Gauss (Min) 15, 5
Operating Point Bop (Bops +ve/ Bopn -ve) Gauss (Typ) -
Operating Voltage (V) 3 to 20
Output Current Capability (mA) 25
Output Type Single, Internal Pull-Up Resistor, Active Low
AEC Qualified No
Release Point Brp (Brps +ve/Brpn -ve) Gauss (Max) -15, -5
Release Point Brp (Brps +ve/Brpn -ve) Gauss (Min) -60, -80
Release Point Brp (Brps +ve/Brpn -ve) Gauss (Typ) -

Related Content


Technical Documents

MDS Reports

Recommended Soldering Techniques



Product Change Notices (PCNs)

A PCN may only apply to specific orderable part numbers in this datasheet. Please refer to the corresponding PCN to see the exact orderable part number(s) affected.

PCN # Issue Date Implementation Date Subject
PCN-2512 2021-04-16 2021-07-16 Qualified Additional Assembly & Test (A/T) Site