The SHT21 has the sensor chip encapsulated in a DFN 3-0 package. With this encapsulation the chip is completely over-molded, except the humidity sensing area.

The components size is reduced to a 3x3-mm footprint with 1.1-mm height.

Over-molding provides protection against aging and ambient impact, such as condensation and harsh environments, and yields long-term stability.

Its has a I²C digital interface. Analog output modes (such as PWM) are available on request.

It consumes power in the range of 3µW at normal operation.

Typical sensor accuracy is ±2% RH over 20 to 80% RH and ±0.3 °C over 25 to 42 °C.

The SHT21 has been qualified in accordance with automotive standard AEC-Q100.

Free samples of the SHT21 can be ordered.