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Low-power humidity and temperature digital sensor with protective cover

US ECCN: EAR99 US/Local Export Classification Number


Quality information

RoHS Yes
Lead finish / Ball material NIPDAU
MSL rating / Peak reflow Level-1-260C-UNLIM
Quality, reliability
& packaging information

Information included:

  • RoHS
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring
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Packaging information

Package | Pins Package qty | Carrier: Operating temperature range (°C)
WSON (DEB) | 6 3,000 | LARGE T&R
-40 to 125
Package | Pins WSON (DEB) | 6
Package qty | Carrier: 3,000 | LARGE T&R
Operating temperature range (°C) -40 to 125
View TI packaging information

Features for the HDC2021

  • Factory-installed polyimide tape to protect sensor during assembly
  • RH measurement range: 0% to 100%
  • Temperature measurement range: –40°C to 125°C
  • Humidity accuracy: ±2% (typical), ±3% (maximum)

  • Temperature accuracy: ±0.2°C (typical), ±0.4°C (maximum)

  • Supply voltage range: 1.62 V to 3.6 V
  • I2C interface compatibility
  • 50 nA sleep mode current
  • 550 nA average supply current (11-bit accuracy option, 1 measurement/second)
  • Continuous conversion or one-shot measurement mode

  • Backward-compatible with HDC2080

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Description for the HDC2021

The HDC2021 is an integrated relative humidity and temperature sensor with a factory-installed polyimide tape cover over the opening of the relative humidity sensor element. The tape cover provides protection against pollutants that can appear in certain stages of the manufacturing process, such as SMT assembly, PCB board wash, and conformal coating. The tape design allows for a full conformal coating of the PCB, and includes an adhesive free corner tab for quick removal using tweezers.

The device is backward-compatible with the HDC2080, providing high accuracy measurements with very low power consumption in a small DFN package. The capacitive-based sensor includes new integrated digital features and a heating element to dissipate condensation and moisture. The digital features include programmable interrupt thresholds to provide alerts and system wake-ups without requiring a microcontroller to continuously monitor the system. Combined with programmable sampling intervals, low power consumption, and 1.8-V supply voltage support, the is designed for ultra-low power battery-operated systems.


Qty Price (USD)
1-99 2.8
100-249 2.453
250-999 1.72
1,000+ 1.386

Additional package qty | carrier options

Package qty | Carrier 250 | SMALL T&R
Inventory Out of stock
Qty | Price (USD) 1ku | 1.594 1-99 3.22 100-249 2.821 250-999 1.978 1,000+ 1.594