HTU31D RH/T SENSOR IC

Digital Relative Humidity & Temperature Sensor

REV3 01/2021

Page 15

Packaging Type

HTU31 is provided in DFN type package (Dual Flat No leads).

The HTU31 sensor chip is mounted on a lead frame made of Cu and plated with Ni/Pd/Au.

Traceability Information

Every HTU31D is laser marked with an alphanumeric code. The marking consists of two lines of digits:

•

The first line denotes the sensor type: HTU31.

•

The second line denotes HTU31 output mode and Date Code as:

o The first digit of the second line defines the HTU31 output mode:



D = Digital (I²C)



V = Analog

o The second and third digits define the manufacturing year: 19=2019, 20=2020.

o The last three digits represent the day of the year.

Reels are also labeled for lot identification and additional traceability information, as displayed below:

With:

3X:

Sensor Type (31 for HTU31)

Y:

Output mode (V = Analog)

TTTTTTTTT:

MEAS Traceability Code

QQQQ:

Quantity per reel (400, 1500 or 5000 units)

YY:

Last two digits of the year

DDD:

Day of the year