Silicon Labs Si7021-A20-IM1, Temperature & Humidity Sensor -40 → +125 °C ±0.4 °C, ±3 %RH Serial-I2C, 6-Pin

  • RS Stock No. 169-0088
  • Mfr. Part No. SI7021-A20-IM1
  • Manufacturer Silicon Labs
Technical data sheets
Legislation and Compliance
RoHS Certificate of Compliance
COO (Country of Origin): PH
Product Details

Si70xx/Si701x/Si702x Digital Humidity & Temperature Sensors

The Si70xx/Si701x/Si702x series of digital humidity & temperature sensors integrates a humidity sensor, temperature sensor, I2C serial interface, calibration and on-chip signal conditioning in one compact QFN/DFN CMOS package.

When air comes into contact with the exposed polymide sensor, moisture in the air causes a capacitance change in the sensor resulting in the on-chip conditioning converting this to a humidity reading. This is then made available to the user over the I2C interface.

Applications include asset and goods tracking, laptops, tablets, PLC and I/O modules, smart phones, thermostats, humidistats, wireless sensing, detection of gas, fire, smoke and water, ventilation and air conditioning.

Wide operating voltage range : 1.9 V to 3.6 V
Low power
I2C serial interface
On-chip heater
Great long term stability
Fully calibrated
Pre-installed protective filter

Temperature & Humidity Sensors, Silicon Laboratories

Attribute Value
Sensor Function Temperature & Humidity
Output Type Digital
Interface Type Serial-I2C
Accuracy ±0.4 °C, ±3 %RH
Mounting Type Surface Mount
Pin Count 6
Operating Temperature Range -40 → +125 °C
Minimum Operating Temperature -40 °C
Maximum Operating Temperature +125 °C
Minimum Operating Supply Voltage 1.9 V
Maximum Operating Supply Voltage 3.6 V
Package Type DFN
Length 3mm
Height 0.75mm
Width 3mm
Resolution 12 (Humidity) bit, 14 (Temperature) bit
Dimensions 3 x 3 x 0.75mm
Temporarily out of stock - back order for despatch 26-06-2020, delivery within 2 working days
Unit of sale: Each (On a Tape of 100)
(exc. VAT)
(inc. VAT)
Per unit
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