The HDC1080DMBR from Texas Instruments is a humidity and temperature sensor measuring 0 to 100% RH with ±2% RH accuracy and an I²C interface, with a 15 s response time, in a surface-mount package.
The HDC1080DMBT from Texas Instruments is a humidity and temperature sensor with I²C output, 3.3 V, measuring 0 to 100% RH with ±2% RH accuracy and 15 s response time, surface mount.