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Back to catalog
NRND

STS21

  • All products
  • •Temperature sensors
  • •STS2x

±0.2°C Digital temperature sensor

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.
Successor productSee inventoryDistributor listContact sales

Successor product

NameDescriptionSeriesCategory
STS40±0.2°C Ultra-low-power temperature sensorSTS4xTemperature sensors

STS40

±0.2°C Ultra-low-power temperature sensor

STS4x

Temperature sensors

Specification

Temperature
Typ. temperature accuracy0.2°C0.2°C
Operating temperature range [°C]-40 - 125°C-40 - 125°C
Response time (τ63%)5s5s
Generic
Supply voltage2.1 - 3.6V2.1 - 3.6V

Downloads

Datasheet STS21
  • 12/2011•
  • PDF•
  • 517.9 KB
DatasheetDownload Datasheet STS2112/2011Download Datasheet STS21PDFDownload Datasheet STS21517.9 KBDownload Datasheet STS21
Calibration certification SHT/STS
  • 08/2021•
  • PDF•
  • 110.4 KB
CertificateDownload Calibration certification SHT/STS08/2021Download Calibration certification SHT/STSPDFDownload Calibration certification SHT/STS110.4 KBDownload Calibration certification SHT/STS
REACH and RoHS declaration SHT/STS
  • 04/2026•
  • PDF•
  • 107.3 KB
CertificateDownload REACH and RoHS declaration SHT/STS04/2026Download REACH and RoHS declaration SHT/STSPDFDownload REACH and RoHS declaration SHT/STS107.3 KBDownload REACH and RoHS declaration SHT/STS
Temperature brochure Japanese
  • 05/2025•
  • PDF•
  • 1.4 MB
FlyerDownload Temperature brochure Japanese05/2025Download Temperature brochure JapanesePDFDownload Temperature brochure Japanese1.4 MBDownload Temperature brochure Japanese
Temperature product flyer
  • 10/2024•
  • PDF•
  • 1.1 MB
FlyerDownload Temperature product flyer10/2024Download Temperature product flyerPDFDownload Temperature product flyer1.1 MBDownload Temperature product flyer
Temperature product flyer Chinese
  • 03/2025•
  • PDF•
  • 1.2 MB
FlyerDownload Temperature product flyer Chinese03/2025Download Temperature product flyer ChinesePDFDownload Temperature product flyer Chinese1.2 MBDownload Temperature product flyer Chinese
  • Home
  • Products
  • Product catalog
  • STS21
Average supply current300uA300uA
Max. supply current330uA330uA
InterfacesI²CI²C
Size (LxWxH)3 x 3 x 1.1mm3 x 3 x 1.1mm
Packaging size400, 1500, 5000pcs (T&R)400, 1500, 5000pcs (T&R)

Applications for this product

Transport of perishable goods

Sensors play a vital role in maintaining quality during the transport of perishable goods

Learn more

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