Low-Power I2C Temperature Sensor in WLP Package

The MAX31875 is a ±1°C-Accurate Local Temperature Sensor with I2C/SMBus Interface.

Please check latest availability status for a specific part variant.


The MAX31875 is a ±1°C-accurate local temperature sensor with I2C/SMBus interface. The combination of tinypackage and excellent temperature measurement accuracymakes this product ideal for a variety of equipment.

The I2C/SMBus-compatible serial interface accepts standard write byte, read byte, send byte, and receive byte commands to read the temperature data and configure the behavior of the sensor. Bus timeout resets the interface if the clock is low for more than 30ms (nominal). PEC helps to avoid communication errors when used with a master that supports this feature.

The MAX31875 is available in a 4-bump, wafer-level package (WLP) and operates over the -50°C to +150°C temperature range.

Design Solution: Cool Down with a Smaller, Lower Power Temperature Sensor ›

MAX31875: Simplified Block Diagram MAX31875: Simplified Block Diagram Enlarge+

Key Features

  • Tiny, 0.84mm x 0.84mm x 0.35mm WLP
  • Excellent Temperature Accuracy
    • ±1.75°C from -40°C to +145°C
    • ±1°C from -0°C to +70°C
  • <10µA Average Power Supply Current
  • Selectable Timeout Prevents Bus Lockup (Default Enabled)
  • I2C and SMBus Support
  • Selectable PEC for Reliable Communications
  • Up to 1MHz Bus Speed
  • +1.6V to +3.6V Power Supply Voltage


  • Battery-Powered Equipment
  • Data Communications Equipment
  • Handheld Electronics
  • Industrial Equipment
  • Servers

See parametric specs for Temperature Sensors (113)

Part NumberSensor TypeInterfaceChannelsAccuracy
Parasite Pwr.Temp. Thresh.Temp. Resolution
Multi DroppableOper. Temp.
See Notes
MAX31875 Local2-Wire/I2C/SMBusOne2NoProgrammable
Yes-20 to +150
$0.48 @1k

Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

MAX31875EVKIT: Evaluation Kit for the MAX31875

Tools & Models

  • MAX31875 IBIS Model
  • Request Reliability Report for: MAX31875 
    Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C   Material Composition  

    Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

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