Specification

Temperature
Typ. temperature accuracy
0.2
°C
Operating temperature range
-40 - 125
°C
Response time (τ63%)
5
s
Generic
Supply voltage
2.1 - 3.6
V
Average supply current
300
uA
Max. supply current
330
uA
Interfaces
I²C
Package size (LxWxH)
3 x 3 x 1.1
mm³
Packaging size
400, 1500, 5000
pcs (T&R)

Technical downloads

Name
Type
Date
File
Size
Datasheet STS21
Datasheet
12/2011
PDF
517.9 KB
Calibration certification SHT/STS
Certificate
08/2021
PDF
110.4 KB
Datasheet STS4x
Datasheet
07/2022
PDF
532.5 KB
ESD, Latch-up and EMC
Application note
03/2009
PDF
148.9 KB
Design-in guide SHT/STS
User guide
05/2019
PDF
458.7 KB
REACH and RoHS declaration SHT/STS
Certificate
07/2022
PDF
93.7 KB
Indoor air quality brochure
Flyer
10/2021
PDF
7.7 MB
Temperature sensors brochure
Flyer
07/2021
PDF
1.5 MB

A 3x3mm, fully calibrated digital temperature sensor with impressive performance.

Based on the same chip as the successful and industry proven SHT2x family of humidity and temperature sensors, the STS21 offers the same superior performance and space saving 3x3mm footprint. The temperature sensor features a different I²C address than the SHT2x and is pin compatible. Therefore it is custom-made for solutions in which temperature measurement is a prerequisite and humidity measurement is optional, as the same hardware can be used for both options.

The outstanding accuracy and low power consumption paired with a competitive price make the STS21 an ideal solution for applications with high demands on both performance and economy.

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