Product details


Relative humidity accuracy (Typ) (%RH) 1.5 Temperature accuracy (Typ) (°C) 0.1 Relative humidity operating range (Typ) (%RH) 10 to 90 Supply voltage (Min) 1.62 Supply voltage (Max) 5.5 Average supply current (Typ) (uA) 0.9 Operating temperature range (C) -40 to 125 Interface type I2C Package type Filter cover, Open cavity, Tape cover Rating Automotive open-in-new Find other Humidity sensors


  • AEC-Q100 qualified for automotive applications
    • Temperature Grade 1: –40°C to 125°C
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classification Level C4
  • Relative humidity (RH) sensor:
    • Operating range: 0% to 100%
    • Accuracy: ±1.5% typical
    • Drift Correction: reduces offset to return device to within accuracy specification
    • Long-term drift: 0.21%RH/yr
    • Condensation protection with integrated heater
  • Temperature sensor:
    • Operating range: –40°C to 125°C
    • Accuracy: ±0.1°C typical
  • NIST traceability: relative humidity & temperature
  • Low power: average current 0.4 µA
  • I2C interface compatibility up to 1-Mhz speeds
    • Four selectable I2C addresses
    • Command/data protection through CRC checksum
  • Supply voltage: 1.62 V to 5.50 V
  • Available auto measurement mode
  • Programmable interrupts
  • Programmable measurement calibration
  • Factory-installed polyimide tape assembly cover
  • Factory-installed IP67 rated environmental cover
open-in-new Find other Humidity sensors


The HDC302x-Q1 is an integrated capacitive based relative humidity (RH) and temperature sensor. It provides high accuracy measurements over a wide supply range (1.62 V – 5.5 V), along with ultra-low power consumption in a compact 2.5-mm × 2.5-mm package. Both the temperature and humidity sensors are 100% tested and trimmed on a production setup that is NIST traceable and verified with equipment that is calibrated to ISO/IEC 17025 standards.

Drift Correction reduces RH sensor offset due to aging, exposure to extreme operating conditions, and contaminants to return device to within accuracy specifications. For battery IoT applications, auto measurement mode and ALERT feature enable low system power by maximizing MCU sleep time. There are four different I2C addresses that support speeds up to 1 MHz. A heating element is available to dissipate condensation and moisture.

The HDC302x-Q1 is an open cavity package without protective cover. Two device variants have a cover option to protect the open cavity RH sensor: HDC3021 -Q1 and HDC3022 -Q1. HDC3021 -Q1 has removable protective tape to allow conformal coatings and PCB wash. HDC3022 -Q1 has a permanent IP67 filter membrane to protect against dust and water.

open-in-new Find other Humidity sensors
Similar products you might be interested in
open-in-new Compare products
Similar functionality to the compared device.
HDC2010 ACTIVE 2% RH ultra-small, low-power digital relative humidity sensor Ultrasmall 1.5-mm x 1.5-mm package
HDC2021 ACTIVE 2% RH ultra-low-power digital relative humidity sensor, tape cover Removable tape for conformal coating and potting
HDC2022 ACTIVE 2% RH ultra-low-power digital relative humidity sensor, IP67 filter Permenant IP67 filter for water and dust protection

Technical documentation

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

document-generic User guide

The HDC3020EVM evaluation module (EVM) enables designers to evaluate the operation and performance of the HDC3020 relative humidity and temperature sensor. The EVM hosts an MSP430F5528 microcontroller (µC) as well as the HDC3020. The µC is used to control the HDC3020 and communicate with (...)

  • Streaming relative humidity and temperature measurements
  • Data logging
  • USB plug-and-play
  • Detachable sensor section for prototype remote operation

CAD/CAE symbols

Package Pins Download
(DEF) 8 View options

Ordering & quality

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

Recommended products may have parameters, evaluation modules or reference designs related to this TI product.

Support & training

TI E2E™ forums with technical support from TI engineers

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​