ALLEGRO MICROSYSTEMS  A1101EUA-T  Hall Effect Switch, Unipolar Switch, Switch, 100 G, 45 G, 3.8 V, 24 V, SIP


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Product Overview

The A1101EUA-T is a continuous time hall effect switch in 3 pin SIP package. It is a next generation replacement for the popular Allegro 312x and 314x lines of unipolar switches. The A1101 uses BiCMOS technology which consists of devices that feature fast power-on time and low noise operation. Device programming is performed after packaging to ensure increased switchpoint accuracy by eliminating offsets that can be induced by package stress. Unique hall element geometries and low offset amplifiers help to minimize noise and to reduce residual offset voltage which is normally caused by device overmoulding, temperature excursions and thermal stress. The device includes voltage regulator, hall voltage generator, small signal amplifier, schmitt trigger and NMOS output transistor.
  • Automotive grade AEC-Q100 qualified
  • Solid state reliability
  • Stable operation over full operating temperature range
  • Reverse battery protection
  • Factory programmed at end of line for optimum performance
  • Robust EMC performance and high ESD rating
  • Regulator stability without bypass capacitor
  • Supply voltage range from 3.8V to 24V
  • Operate point (BOP) of 100G, release point (BRP) of 45G and hysteresis (BHYS) of 55G at TA = 25°C
  • Operating ambient temperature range from -40°C to 85°C


Sensing & Instrumentation; Automotive; Motor Drive & Control
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Product Information

  • Hall Effect Type Switch
  • Operate Point Typ 100G
  • Release Point Typ 45G
  • Supply Voltage Min 3.8V
  • Supply Voltage Max 24V
  • Sensor Case Style SIP
  • No. of Pins 3 Pin
  • Packaging Each
  • MSL -
  • SVHC No SVHC (15-Jun-2015)

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Availability:  8,907

  • 8,907 in stock for same day shipping
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    More stock available week commencing 6/27/16

Price for: Each

Minimum order quantity: 1

Order multiple quantity: 1

Price: $1.72 $1.72



Quantity List Price
1 - 9 $1.72
10 - 49 $1.53
50 - 99 $1.38
100 - 249 $1.20
250 - 499 $1.06
500 - 999 $0.932
1000 - 2499 $0.735
2500+ $0.687

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Hall Effect Switch, Unipolar Switch, Switch, 100 G, 45 G, 3.8 V, 24 V, SIP

Availability:​ 7,660  

Price for: Each

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