Coto RR122-2B22/2B23 Series

  • Coto Technology

Product Features

  • TMR digital push-pull magnetic sensor
  • Operate sensitivity of -30 G (typical)
  • Average supply current of 135nA at 3V (typical)
  • Supply voltage range of 1.7V to 5.5V
  • Unipolar push-pull response
  • Operating frequency of 10Hz
  • SOT-23-3 (511) package


The RedRock™ RR122-2B22/2B23 sensor series from Coto Technology is a range of digital push-pull magnetic sensors designed using a patented Tunneling Magnetoresistance (TMR) technology with seamless CMOS integration. The RR122-2B22/2B23 series features a typical operate sensitivity of -30 G (-3 mT), with a unipolar magnetic field response. They offer a wide supply voltage range from 1.7V to 5.5V, ideal for applications ranging from small battery-powered electronics to industrial machinery. The TMR sensors have a typical current drain of 135nA (at 3V and operating at 10Hz), and are available with operating temperature ranges of -40°C to +85°C (RR122-2B22-511) or -40°C to +125°C (RR122-2B23-511). These sensors are ideal for use in medical, industrial, automotive, and consumer applications.

  • TMR digital push-pull magnetic sensor
  • Operate sensitivity of -30 G (typical)
  • Release point sensitivity of -20 G (typical)
  • Average supply current of 135nA at 3V (typical)
  • Supply voltage range of 1.7V to 5.5V
  • Unipolar Push-Pull Response
  • Operating frequency of 10Hz
  • Temperature range of -40° to +85° (RR122-2B22-511)
  • Temperature range of -40°C to +125°C (RR122-2B23-511)
  • Hysteresis (BHYST)2 of 10G (typical)
  • SOT-23-3 (511) package

Approvals for the Coto Technology RR122-2B22/2B23 Series include:

  • RoHS

Typical applications for the Coto Technology RR122-2B22/2B23 Series include:

  • Proximity Detection
  • Rotary Sensing
  • Fluid Level Detection
  • Door & Lid Closure Detection
  • Utility Meters
  • Portable Medical Devices
  • Motor Controllers
  • Consumer Electronics
  • Wake-up Microprocessor

Coto is a worldwide market leader of small signal-switching products sold into the Automatic Test Equipment, Data Acquisition, Instrumentation, Process Control, Telecommunications, Medical and Security markets. Coto specialises in the manufacture of relay, switch and sensor products. Coto are the pioneers of the RedRock® analog and digital TMR magnetic sensors, offering the lowest power consumption, highest sensitivity, ultra-miniature package size, short lead times and a highly-competitive price. Please visit for more information.

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Series / Model


Product Type

Magnetic Polarity Response

Release Point


Clock Frequency

Temperature Range (°C)


Supply Voltage

Average Supply Current

Output Response

Package / Size

Coto RR122-2B22/2B23 Series Ordering Info

Below is the model number configuration for the RR122 series from Coto Technology.

Ordering example: RR122-2B22-511

Series / Model (RR122)


Magnetic Polarity Response (X)


Magnetic Sensitivity (X)

Op -30 G, Rel -20 G

Clock Frequency (X)


Temperature Range (°C) (X)

-40 to +85°C
-40 to +125°C

Supply Voltage (Y)

1.7 to 5.5V

Output Response (Y)

Active Low

Package / Size (Y)


Coto RR122-2B22/2B23 Series Resources

Product Datasheet

  • Coto Technology

Coto RR122-2B22/2B23 Series

Please be advised that due to the ongoing supply issues with raw materials affecting the global electronics industry, as well as an increase in orders received by our manufacturing partners, a large number of products are facing increased lead times in recent months. For the latest lead time and stock availability, please contact one of our engineers who will be happy to discuss lead times further and the potential for alternative parts.