Smart gas and water meters promise to give building managers important tools to lower utility bills and increase safety. The flow meters can only







The TMR Switch is a digital magnetic switch that integrate Tunneling Magnetoresistance (TMR) and CMOS technology in order to provide a magnetically triggered digital switch with high sensitivity, and ultra-low power consumption.
It contains TMR magnetic sensor and CMOS signal processing circuitry within the same package, including an on-chip TMR voltage generator for precise magnetic sensing, a TMR voltage amplifier and comparator plus a Schmitt trigger to provide switching hysteresis for noise rejection.
An internal band gap regulator is used to provide a temperature compensated supply voltage for internal circuits, permitting a wide range of supply voltages.
It is available in the package SOT23-3.
- TMR Technology supports Bop of 5 or 7 or 10 or 14 or 17 Gauss available
- Ultra-Low Power Consumption: 200nA at 50 Hz response or 1.5 uA at 1 kHz response
- X-axis or Z-axis sensing directions available.
- Unipolar or Omnipolar or Bipolar (latching) operating modes available
- Excellent Thermal Stability
- Open Drain or Push Pull output available
- SOT23-3 package
TMR Switch Parts
Filters
Showing 1 to 6 of 6 Total Results
Part Number | Actions | Switch Type | B operate Threshold | B release Threshold | Vsupply Current | Frequency Response | Minimum Supply Voltage (V) | Maximum Supply Voltage (V) | Output Type | Sensing Axis | Operating Temperature |
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Part Number | Actions | Switch Type | B operate Threshold | B release Threshold | Vsupply Current | Frequency Response | Minimum Supply Voltage (V) | Maximum Supply Voltage (V) | Output Type | Sensing Axis | Operating Temperature | |
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Bipolar | 17 | -17 | 0.2 | 50 | 1.8 | 5.5 | Push Pull | X | -40° to 125°C | |||
Omnipolar | 17 | 12 | 0.2 | 50 | 1.8 | 5.5 | Push Pull | X | -40° to 125°C | |||
Omnipolar | 17 | 10 | 1.5 | 1000 | 1.8 | 5.5 | Push Pull | X | -40° to 125°C | |||
Omnipolar | 17 | 10 | 1.5 | 1000 | 1.8 | 5.5 | Push Pull | Z | -40° to 125°C | |||
Omnipolar | 14 | 10 | 1.5 | 1000 | 1.8 | 5.5 | Open Drain | X | -40° to 125°C | |||
Unipolar | 17 | 13 | 0.2 | 50 | 1.8 | 5.5 | Open Drain | X | -40° to 125°C |
TMR Switch Applications

Gas & Water Meters
Highlights Section
- Proximity Switches
- Utility Meters including Gas, Water and Heat Meters
- Position and Speed Sensing
- Motor and Fan Control
- Solid State Switches
TMR Switch Custom Products Request
Need your TMR SWITCH parts customized? Please let us know about yourself and your project needs, and a Littelfuse expert will be in touch about customizing our product(s) for you.