Board Mount Hall Effect/Magnetic Sensors

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Si720x & Si721x Hall Effect Magnetic Sensors

Silicon Labs Si720x and Si721x Hall Effect Magnetic Position Sensors combine a chopper-stabilized Hall element with a low-noise analog amplifier and 13-bit analog to digital converter. The sensors have proven CMOS design techniques and incorporate digital signal processing for precise temperature and offset drift compensation. The Si720x and Si721x enable use with larger air gaps and smaller magnets and are AEC-Q100 qualified for automotive applications.

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Part #

Board Mount Hall Effect/Magnetic Sensors Magnetic Hall Sensor Omnipolar switch

SI7201-B-40-IVR
Silicon Labs
1: $1.01
35,843In Stock
End of Life

Mfr. Part No.
SI7201-B-40-IVR

Mouser Part No
634-SI7201-B-40-IVR

End of Life

Silicon Labs

Board Mount Hall Effect/Magnetic Sensors Magnetic Hall Sensor Omnipolar switch

Learn More

Datasheet

35,843In Stock

Cut Tape

$1.01

$0.782

$0.704

$0.618

Reel

$0.511

View

Min.: 1
Mult.: 1

: 3,000

Omnipolar

6.5 mA

1.71 V to 5.5 V

- 40 C

+ 125 C

SMD/SMT

SOT23-3

Si720x

Reel, Cut Tape

Board Mount Hall Effect/Magnetic Sensors Linear output Hall effect magnetic sensor with analog output

SI7211-B-00-IV
Silicon Labs
1: $1.54
31,698In Stock
End of Life

Mfr. Part No.
SI7211-B-00-IV

Mouser Part No
634-SI7211-B-00-IV

End of Life

Silicon Labs

Board Mount Hall Effect/Magnetic Sensors Linear output Hall effect magnetic sensor with analog output

Learn More

Datasheet

31,698In Stock

$1.54

$1.20

$1.09

$0.961

View

Min.: 1
Mult.: 1

Linear

5.5 mA

20 mT to 200 mT

2.25 V to 5.5 V

- 40 C

+ 125 C

SMD/SMT

SOT-23-3

Si721x

Cut Tape

Board Mount Hall Effect/Magnetic Sensors Linear output Hall effect magnetic sensor with analog output

SI7211-B-00-IVR
Silicon Labs
1: $1.54
12,864In Stock
End of Life

Mfr. Part No.
SI7211-B-00-IVR

Mouser Part No
634-SI7211-B-00-IVR

End of Life

Silicon Labs

Board Mount Hall Effect/Magnetic Sensors Linear output Hall effect magnetic sensor with analog output

Learn More

Datasheet

12,864In Stock

Cut Tape

$1.54

$1.20

$1.09

$0.961

Reel

$0.802

View

Min.: 1
Mult.: 1

: 3,000

Linear

5.5 mA

20 mT to 200 mT

2.25 V to 5.5 V

- 40 C

+ 125 C

SMD/SMT

SOT-23-3

Si721x

Reel, Cut Tape

Board Mount Hall Effect/Magnetic Sensors Magnetic Hall Sensor Omnipolar switch

SI7201-B-20-IV
Silicon Labs
1: $1.01
5,856In Stock
End of Life

Mfr. Part No.
SI7201-B-20-IV

Mouser Part No
634-SI7201-B-20-IV

End of Life

Silicon Labs

Board Mount Hall Effect/Magnetic Sensors Magnetic Hall Sensor Omnipolar switch

Learn More

Datasheet

5,856In Stock

$1.01

$0.782

$0.704

$0.618

View

Min.: 1
Mult.: 1

Omnipolar

4.9 mT

2.3 mT

1.7 V to 5.5 V

- 40 C

+ 125 C

SMD/SMT

SOT23-3

Si720x

Cut Tape

Board Mount Hall Effect/Magnetic Sensors Hall effect magnetic sensor with latch

SI7202-B-01-IVR
Silicon Labs
1: $1.01
3,610In Stock
End of Life

Mfr. Part No.
SI7202-B-01-IVR

Mouser Part No
634-SI7202-B-01-IVR

End of Life

Silicon Labs

Board Mount Hall Effect/Magnetic Sensors Hall effect magnetic sensor with latch

Learn More

Datasheet

3,610In Stock

Cut Tape

$1.01

$0.782

$0.704

$0.618

Reel

$0.511

View

Min.: 1
Mult.: 1

: 3,000

Low Voltage

400 nA

0.5 mT to 1.5 mT

- 1.5 mT to - 0.5 mT

1.7 V to 5.5 V

- 40 C

+ 125 C

SMD/SMT

SOT-23-3

Si720x

Reel, Cut Tape

Board Mount Hall Effect/Magnetic Sensors Magnetic Hall Sensor Omnipolar switch

SI7201-B-32-IVR
Silicon Labs
1: $1.01
8,866In Stock
End of Life

Mfr. Part No.
SI7201-B-32-IVR

Mouser Part No
634-SI7201-B-32-IVR

End of Life

Silicon Labs

Board Mount Hall Effect/Magnetic Sensors Magnetic Hall Sensor Omnipolar switch

Learn More

Datasheet

8,866In Stock

Cut Tape

$1.01

$0.782

$0.704

$0.618

Reel

$0.511

View

Min.: 1
Mult.: 1

: 3,000

Omnipolar

6.5 mA

7 mT

4.1 mT

1.71 V to 5.5 V

- 40 C

+ 125 C

SMD/SMT

SOT23-3

Si720x

Reel, Cut Tape

Board Mount Hall Effect/Magnetic Sensors Magnetic Hall Sensor Omnipolar switch

SI7201-B-20-IVR
Silicon Labs
1: $1.01
22,243In Stock
End of Life

Mfr. Part No.
SI7201-B-20-IVR

Mouser Part No
634-SI7201-B-20-IVR

End of Life

Silicon Labs

Board Mount Hall Effect/Magnetic Sensors Magnetic Hall Sensor Omnipolar switch

Learn More

Datasheet

22,243In Stock

Cut Tape

$1.01

$0.859

$0.771

$0.707

Reel

$0.583

View

Min.: 1
Mult.: 1

: 3,000

Omnipolar

6.5 mA

4.9 mT

2.3 mT

1.71 V to 5.5 V

- 40 C

+ 125 C

SMD/SMT

SOT23-3

Si720x

Reel, Cut Tape

Board Mount Hall Effect/Magnetic Sensors Magnetic Hall Sensor Omnipolar switch

SI7201-B-86-IV
Silicon Labs
1: $1.01
5,849In Stock
End of Life

Mfr. Part No.
SI7201-B-86-IV

Mouser Part No
634-SI7201-B-86-IV

End of Life

Silicon Labs

Board Mount Hall Effect/Magnetic Sensors Magnetic Hall Sensor Omnipolar switch

Learn More

Datasheet

5,849In Stock

$1.01

$0.782

$0.704

$0.618

View

Min.: 1
Mult.: 1

Omnipolar

3.7 mT

1.4 mT

1.7 V to 5.5 V

- 40 C

+ 125 C

SMD/SMT

SOT23-3

Si720x

Cut Tape

Board Mount Hall Effect/Magnetic Sensors IC Hall Sensor I2C Low Push Pull (0x31)

SI7210-B-12-IM2
Silicon Labs
1: $1.35
11,117In Stock
End of Life

Mfr. Part No.
SI7210-B-12-IM2

Mouser Part No
634-SI7210-B-12-IM2

End of Life

Silicon Labs

Board Mount Hall Effect/Magnetic Sensors IC Hall Sensor I2C Low Push Pull (0x31)

Learn More

Datasheet

11,117In Stock

$1.35

$1.20

$1.09

$0.961

View

Min.: 1
Mult.: 1

Magnetic

6.8 mA

+/- 7 mT

+/- 4 mT

1.71 V to 5.5 V

- 40 C

+ 125 C

SMD/SMT

DFN-8

Si7210

Cut Tape

Board Mount Hall Effect/Magnetic Sensors Hall effect magnetic sensor with omnipolar switch

SI7201-B-04-IVR
Silicon Labs
1: $1.97
8,658In Stock
24,000Expected 2026/10/09
End of Life

Mfr. Part No.
SI7201-B-04-IVR

Mouser Part No
634-SI7201-B-04-IVR

End of Life

Silicon Labs

Board Mount Hall Effect/Magnetic Sensors Hall effect magnetic sensor with omnipolar switch

Learn More

Datasheet

8,658In Stock

24,000Expected 2026/10/09

Cut Tape

$1.97

$1.17

$1.05

$0.947

View

Reel

$0.656

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

Omnipolar

1.4 mT

0.2 mT

1.7 V to 5.5 V

- 40 C

+ 125 C

SMD/SMT

SOT-23-3

Si720x

Reel, Cut Tape, MouseReel

Board Mount Hall Effect/Magnetic Sensors Hall effect magnetic sensor with omnipolar switch

SI7201-B-06-IV
Silicon Labs
1: $1.01
25,456In Stock
End of Life

Mfr. Part No.
SI7201-B-06-IV

Mouser Part No
634-SI7201-B-06-IV

End of Life

Silicon Labs

Board Mount Hall Effect/Magnetic Sensors Hall effect magnetic sensor with omnipolar switch

Learn More

Datasheet

25,456In Stock

$1.01

$0.859

$0.771

$0.711

View

Min.: 1
Mult.: 1

Omnipolar

2 mT

0.6 mT

1.7 V to 5.5 V

- 40 C

+ 125 C

SMD/SMT

SOT-23-3

Si720x

Cut Tape

Board Mount Hall Effect/Magnetic Sensors Magnetic Hall Sensor Omnipolar switch

SI7201-B-30-IVR
Silicon Labs
1: $1.21
4,278In Stock
3,000Expected 2026/10/16
End of Life

Mfr. Part No.
SI7201-B-30-IVR

Mouser Part No
634-SI7201-B-30-IVR

End of Life

Silicon Labs

Board Mount Hall Effect/Magnetic Sensors Magnetic Hall Sensor Omnipolar switch

Learn More

Datasheet

4,278In Stock

3,000Expected 2026/10/16

Cut Tape

$1.21

$0.976

$0.873

$0.835

Reel

$0.69

View

Min.: 1
Mult.: 1

: 3,000

Omnipolar

6.5 mA

7 mT

4.1 mT

1.71 V to 5.5 V

- 40 C

+ 125 C

SMD/SMT

SOT23-3

Si720x

Reel, Cut Tape

Board Mount Hall Effect/Magnetic Sensors IC Hall Sensor I2C Low Push Pull (0x33)

SI7210-B-14-IM2
Silicon Labs
1: $1.26
344In Stock
End of Life

Mfr. Part No.
SI7210-B-14-IM2

Mouser Part No
634-SI7210-B-14-IM2

End of Life

Silicon Labs

Board Mount Hall Effect/Magnetic Sensors IC Hall Sensor I2C Low Push Pull (0x33)

Learn More

Datasheet

344In Stock

$1.26

$1.17

$1.03

$1.00

View

Min.: 1
Mult.: 1

Magnetic

6.8 mA

+/- 7 mT

+/- 4 mT

1.71 V to 5.5 V

- 40 C

+ 125 C

SMD/SMT

DFN-8

Si7210

Cut Tape

Board Mount Hall Effect/Magnetic Sensors Hall effect magnetic sensor with omnipolar switch

SI7201-B-00-FV
Silicon Labs
1: $1.40
277In Stock
End of Life

Mfr. Part No.
SI7201-B-00-FV

Mouser Part No
634-SI7201-B-00-FV

End of Life

Silicon Labs

Board Mount Hall Effect/Magnetic Sensors Hall effect magnetic sensor with omnipolar switch

Learn More

Datasheet

277In Stock

$1.40

$0.969

$0.878

$0.743

View

Min.: 1
Mult.: 1

Omnipolar

1.1 mT

0.2 mT

1.7 V to 3.6 V

0 C

+ 70 C

SMD/SMT

SOT-23-3

Si720x

Cut Tape

Board Mount Hall Effect/Magnetic Sensors Hall effect magnetic sensor with omnipolar switch

SI7201-B-02-FV
Silicon Labs
1: $1.38
275In Stock
End of Life

Mfr. Part No.
SI7201-B-02-FV

Mouser Part No
634-SI7201-B-02-FV

End of Life

Silicon Labs

Board Mount Hall Effect/Magnetic Sensors Hall effect magnetic sensor with omnipolar switch

Learn More

Datasheet

275In Stock

$1.38

$1.17

$1.08

$0.89

View

Min.: 1
Mult.: 1

Omnipolar

0.9 mT

0.2 mT

1.7 V to 3.6 V

0 C

+ 70 C

SMD/SMT

SOT-23-3

Si720x

Cut Tape

Board Mount Hall Effect/Magnetic Sensors Hall effect magnetic sensor with omnipolar switch

SI7201-B-02-FVR
Silicon Labs
1: $1.40
1,286In Stock
3,000Expected 2026/10/16
End of Life

Mfr. Part No.
SI7201-B-02-FVR

Mouser Part No
634-SI7201-B-02-FVR

End of Life

Silicon Labs

Board Mount Hall Effect/Magnetic Sensors Hall effect magnetic sensor with omnipolar switch

Learn More

Datasheet

1,286In Stock

3,000Expected 2026/10/16

Cut Tape

$1.40

$1.17

$1.07

$0.983

Reel

$0.818

View

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

Omnipolar

0.9 mT

0.2 mT

1.7 V to 3.6 V

0 C

+ 70 C

SMD/SMT

SOT-23-3

Si720x

Reel, Cut Tape, MouseReel

Board Mount Hall Effect/Magnetic Sensors Hall effect magnetic sensor with omnipolar switch

SI7201-B-03-IV
Silicon Labs
1: $1.11
144In Stock
End of Life

Mfr. Part No.
SI7201-B-03-IV

Mouser Part No
634-SI7201-B-03-IV

End of Life

Silicon Labs

Board Mount Hall Effect/Magnetic Sensors Hall effect magnetic sensor with omnipolar switch

Learn More

Datasheet

144In Stock

$1.11

$0.951

$0.854

$0.792

View

Min.: 1
Mult.: 1

Omnipolar

2.8 mT

1.1 mT

1.7 V to 5.5 V

- 40 C

+ 125 C

SMD/SMT

SOT-23-3

Si720x

Cut Tape

Board Mount Hall Effect/Magnetic Sensors Hall effect magnetic sensor with omnipolar switch

SI7201-B-04-IV
Silicon Labs
1: $1.01
389In Stock
End of Life

Mfr. Part No.
SI7201-B-04-IV

Mouser Part No
634-SI7201-B-04-IV

End of Life

Silicon Labs

Board Mount Hall Effect/Magnetic Sensors Hall effect magnetic sensor with omnipolar switch

Learn More

Datasheet

389In Stock

$1.01

$0.859

$0.771

$0.711

View

Min.: 1
Mult.: 1

Omnipolar

1.4 mT

0.2 mT

1.7 V to 5.5 V

- 40 C

+ 125 C

SMD/SMT

SOT-23-3

Si720x

Cut Tape

Board Mount Hall Effect/Magnetic Sensors Hall effect magnetic sensor with omnipolar switch

SI7201-B-05-IV
Silicon Labs
1: $1.01
465In Stock
End of Life

Mfr. Part No.
SI7201-B-05-IV

Mouser Part No
634-SI7201-B-05-IV

End of Life

Silicon Labs

Board Mount Hall Effect/Magnetic Sensors Hall effect magnetic sensor with omnipolar switch

Learn More

Datasheet

465In Stock

$1.01

$0.902

$0.816

$0.721

View

Min.: 1
Mult.: 1

Omnipolar

2 mT

0.6 mT

1.7 V to 5.5 V

- 40 C

+ 125 C

SMD/SMT

SOT-23-3

Si720x

Cut Tape

Board Mount Hall Effect/Magnetic Sensors Hall effect magnetic sensor with omnipolar switch

SI7201-B-05-IVR
Silicon Labs
1: $1.01
60In Stock
6,000Expected 2026/11/20
End of Life

Mfr. Part No.
SI7201-B-05-IVR

Mouser Part No
634-SI7201-B-05-IVR

End of Life

Silicon Labs

Board Mount Hall Effect/Magnetic Sensors Hall effect magnetic sensor with omnipolar switch

Learn More

Datasheet

60In Stock

6,000Expected 2026/11/20

Cut Tape

$1.01

$0.859

$0.771

$0.707

Reel

$0.584

View

MouseReel Available

Min.: 1
Mult.: 1

: 3,000

Omnipolar

2 mT

0.6 mT

1.7 V to 5.5 V

- 40 C

+ 125 C

SMD/SMT

SOT-23-3

Si720x

Reel, Cut Tape, MouseReel

Board Mount Hall Effect/Magnetic Sensors Magnetic Hall Sensor Omnipolar switch

SI7201-B-30-IV
Silicon Labs
1: $1.09
297In Stock
End of Life

Mfr. Part No.
SI7201-B-30-IV

Mouser Part No
634-SI7201-B-30-IV

End of Life

Silicon Labs

Board Mount Hall Effect/Magnetic Sensors Magnetic Hall Sensor Omnipolar switch

Learn More

Datasheet

297In Stock

$1.09

$0.976

$0.873

$0.872

View

Min.: 1
Mult.: 1

Omnipolar

7 mT

4.1 mT

1.7 V to 5.5 V

- 40 C

+ 125 C

SMD/SMT

SOT23-3

Si720x

Cut Tape

Board Mount Hall Effect/Magnetic Sensors Magnetic Hall Sensor Omnipolar switch

SI7201-B-32-IV
Silicon Labs
1: $1.01
118In Stock
End of Life

Mfr. Part No.
SI7201-B-32-IV

Mouser Part No
634-SI7201-B-32-IV

End of Life

Silicon Labs

Board Mount Hall Effect/Magnetic Sensors Magnetic Hall Sensor Omnipolar switch

Learn More

Datasheet

118In Stock

$1.01

$0.859

$0.771

$0.711

View

Min.: 1
Mult.: 1

Omnipolar

7 mT

4.1 mT

1.7 V to 5.5 V

- 40 C

+ 125 C

SMD/SMT

SOT23-3

Si720x

Cut Tape

Board Mount Hall Effect/Magnetic Sensors Magnetic Hall Sensor Omnipolar switch

SI7201-B-40-IV
Silicon Labs
1: $1.01
151In Stock
End of Life

Mfr. Part No.
SI7201-B-40-IV

Mouser Part No
634-SI7201-B-40-IV

End of Life

Silicon Labs

Board Mount Hall Effect/Magnetic Sensors Magnetic Hall Sensor Omnipolar switch

Learn More

Datasheet

151In Stock

$1.01

$0.859

$0.771

$0.711

View

Min.: 1
Mult.: 1

Omnipolar

15 mT

9.6 mT

1.7 V to 5.5 V

- 40 C

+ 125 C

SMD/SMT

SOT23-3

Si720x

Cut Tape

Board Mount Hall Effect/Magnetic Sensors Magnetic Hall Sensor Omnipolar switch

Si7201-B-80-FV
Silicon Labs
1: $1.01
65In Stock
End of Life

Mfr. Part No.
Si7201-B-80-FV

Mouser Part No
634-SI7201-B-80-FV

End of Life

Silicon Labs

Board Mount Hall Effect/Magnetic Sensors Magnetic Hall Sensor Omnipolar switch

Learn More

Datasheet

65In Stock

$1.01

$0.902

$0.816

$0.721

View

Min.: 1
Mult.: 1

Omnipolar

3.4 mT

1.7 mT

1.7 V to 3.6 V

0 C

+ 70 C

SMD/SMT

SOT23-3

Si720x

Cut Tape

Board Mount Hall Effect/Magnetic Sensors Magnetic Hall Sensor Omnipolar switch

Si7201-B-84-IV
Silicon Labs
1: $1.01
178In Stock
End of Life

Mfr. Part No.
Si7201-B-84-IV

Mouser Part No
634-SI7201-B-84-IV

End of Life

Silicon Labs

Board Mount Hall Effect/Magnetic Sensors Magnetic Hall Sensor Omnipolar switch

Learn More

Datasheet

178In Stock

$1.01

$0.902

$0.816

$0.721

View

Min.: 1
Mult.: 1

Omnipolar

3.7 mT

1.4 mT

1.7 V to 5.5 V

- 40 C

+ 125 C

SMD/SMT

SOT23-3

Si720x

Cut Tape

Si720x & Si721x Hall Effect Magnetic Sensors

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