RedRock® RR122-3CU2-515 & RR122-3CU3-515 TMR Digital Push-Pull Magnetic Sensor

The RedRock® RR122-3CU2-515 and RR122-3CU3-515 are digital magnetic sensors ideal for use in medical, industrial, automotive, and consumer applications, based on patented Tunneling Magnetoresistance (TMR) technology with seamless CMOS integration. Short lead times are making RedRock® RR122 TMR Magnetic Sensors a popular replacement alternative for hard-to-get Hall Effect Sensors and Reed Switches.

The RR122-3CU2-515 and RR122-3CU3 feature an operate sensitivity of 10 G (1.0 mT) with a bipolar magnetic field response. They offer a wide supply voltage range from 1.7 up to 5.5 V, ideal for applications ranging from small battery-powered electronics to industrial machinery. They have an ultra low power consumption (600 nA) for an active magnetic sensor as well as operating frequencies up to 10 kHz and high operating temperature ranges from -40°C up to 125°C.

The RR122-3CU2-515 and RR122-3CU3 have an available “turbo” mode that can be toggled via an input pin when faster than usual sampling is required. When provided a logic “high” signal from a microcontroller or similar, it switches the base internal clock frequency up to 100 Hz. This is particularly useful for maximizing battery life in applications involving intermittent high speed rotation sensing, where a slow clock is sufficient to detect the start of rotation but then a faster sampling period is needed to ensure that no rotations are missed.  (See Datasheet)

RR122-3CU2-515 & RR122-3CU3-515 Series Features

  • Operate sensitivity from -10 G to +10 G
  • Ultra Low Power Consumption < 600 nA
  • Wide Supply Voltage Ranges of 1.7V - 5.5V
  • Bipolar Latching Push-Pull Response
  • Base frequency of 100 Hz
  • Turbo Mode Pin to Enable 10 kHz Operation for Fast Response when Required
  • Temperature Rated up to 125°C
  • RoHS & REACH Compliant


  • Proximity Detection
  • Linear Position Sensing
  • Rotary Sensing
  • Fluid Level Detection
  • Door & Lid Closure Detection
  • Utility Meters
  • Portable Medical Devices
  • Motor Controllers
  • Consumer Electronics
  • Wake-Up μProcessor

RR122-3CU2-515 & RR122-3CU3-515 SERIES DIMENSION

In Millimeters (Inches)
  • SOT-5 Dimensions
RedRock 122-3CU2 chart


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