Temperature sensors
Reliable monitoring for
any application

Tested and provenworldwide
Our high-accuracy digital temperature sensors are based on Sensirion’s CMOSens® Technology, which combines thestrengths of standard CMOS production processes and advanced MEMS technology on a single silicon chip. The working principle behind all STSxx temperature sensors is a silicon bandgap thermometer.
In-house sensor calibration and testing infrastructure enables efficient processes that comply with established quality
standards. Each sensor is individually calibrated and tested for quality and accuracy. The high reliability of our sensors
has been proven by more than half a billion sensors in the field over more than ten years. Additionally, it is guaranteed
through a rigorous qualification based on the AEC-Q100 automotive standard.

SEK-STSxx evaluation kit
Straightforward sensor evaluation
The STSxx Evaluation Kit (SEK) is designed to facilitate seamless sensor evaluation.
With plug-and-play hardware and the ControlCenter viewer software, the SEK offersa straightforward and efficient testing process. It provides an essential tool forassessing sensor performance. Note that while all STSxx EKs operate similarly, each
kit caters to different sensor variants.
• Quick, easy, cost-efficient sensor evaluation• Kit content: 3 sensor samples, on FPCB, RJ45 adapter cable (1 meter length)• ControlCenter: displays and logs signals for multiple
sensors on one PC• SensorBridge required (must be bought separately)

Learn more about theSEK-STSxx

STS4xThe STS4x is our state-of-the-art, highly accurate digital temperature sensor series,
boasting industry-leading lead times. It is a cost-efficient platform that is available
in different accuracy classes. Designed for mass production, it comes with a highsignal-to-noise ratio, high process capability and is proven to be reliable and stable overthe long term.

FeaturesBenefits

Available in multiple accuracy ranges

Adaptability and cost-effectivenessFour-pin DFN packaging

Suitable for standard SMD assembly processes

Compact footprint of only 1.5 × 1.5 × 0.55 mm3Ideal for high-volume applications

Available in different I2C addresses

Flexible integration into complex architectures

Wide supply voltage range (1.08-3.6 V), low current
consumption (0.4 µA)

Enables battery-driven designs

Applications• Wearable fitness and activity monitors• Mobile phones, laptops, tablets• Weather stations• Cold chain and data loggers• Smart home devices• HVAC systems∆T (°C)∆T (°C)Typ temperature accuracy±1.0±0.8±0.8±0.6

STS40±0.6±0.4±0.4±0.2±0.2±0.0–40–20020

406080100120Temperature (°C)
∆T (°C)Typ temperature accuracy±1.0±0.8±0.6

Typ temperature accuracy±1.0STS41±0.4±0.2±0.0–40–20020406080100120Temperature (°C)

Learn more about theSTS4xSTS4L±0.0–40–20020406080100120Temperature (°C)

STS4xAThe STS4xA is our upcoming highly reliable, automotive-grade digital temperature
sensor series. It currently consists of two versions: STS41A-AW1B and STS41A-AWLB,
both with wettable flanks packaging to support automated optical inspection (AOI),
and two different supply voltage ranges to fit any design. Moreover, the integrated
on-chip heater enables advanced on-board diagnosis (OBD).

FeaturesBenefits

AEC-Q100 qualified

Guaranteed high reliability through automotive standard

Robust DFN housing with optional wettable flanks

Facilitated integration and inspection

Compact footprint of only 1.5 × 1.5 × 0.6 mm3Ideal for high-volume applications

Included power heater

Advanced self-diagnosis capabilities

Fully functional in condensing environments

Best-in-class temperature accuracy

Available in three I2C-address versions and PWMCommunication and interfacing flexibility

Applications• Anti-fogging detection module• Steer-by-Wire and Break-by-Wire• Thermal runaway monitoring• Onboard HVAC systems∆T (°C)Typ temperature accuracy±1.0±0.8±0.6±0.4STS41A±0.2±0.0–40–20020406080100120Temperature (°C)

Learn more about theSTS4xA

SHT43The ISO17205 certified temperature and humidity sensor SHT43 is the successor to
the temperature sensors STS32 and STS33. It offers unmatched price-performancewith outstanding temperature and humidity sensing and the ideal combination of highaccuracy and low power consumption. Calibration certificates and data for full reelsand each individual SHT43 can be downloaded from libellus.sensirion.com.

FeaturesBenefits

Four-pin DFN packaging

Suitable for standard SMD assembly processes

Compact footprint of only 1.5 × 1.5 × 0.54 mm3Ideal for high-volume applications

ISO17025 temperature calibration certificate on-demand

Enables tracking applications (cold chain, pharmaceuticals,and asset tracking)

Available in different I2C addresses

Flexible integration into complex architectures

Up to 0.08 °C temperature accuracy between 32 and 42 °C

Higher accuracy in body temperature range

Wide supply voltage range (1.08-3.6 V), low currentconsumption (0.4 µA)

Enables battery-driven designs

Applications• Wearable fitness and activity monitors• Mobile phones, laptops, tablets• Weather stations• Core-body and skin temperature sensing• Smart home devices• Trackers and data loggers∆T (°C)∆RH (%RH)

Max temperature accuracy±1.0

Typ RH accuracy at 25°C±6±0.8±0.6

SHT43±4SHT43±0.4±2±0.2±0.0–40–20020406080100120

Temperature (°C)

Learn more about thethe SHT43±00102030405060708090100

Relative Humidity (%RH)

Temperature sensor

STS4LSTS40STS414

STS41A xxLx4

STS41A xx1x4

STS30STS31STS35STS32STS33SHT43(NRND)5(NRND)5(successor)

Typical accuracy (°C)

± 0.4
(0 to 65)

± 0.2
(0 to 65)

± 0.2
(0 to 65)

± 0.2
(0 to 90)

± 0.2(0 to 90)± 0.2(0 to 65)

± 0.2
(0 to 90)

± 0.1
(20 to 60)–––

Maximum accuracy (°C)

± 0.6

±0.4

± 0.4

± 0.4

± 0.4

± 0.4

± 0.4

± 0.3

± 0.4

± 0.48± 0.48

Typ. long-term drift (°C/y)Operating range (°C)

Response time τ63% (s)1

< 0.03< 0.03< 0.03< 0.01< 0.01– 40 to +125

– 40 to +125

– 40 to +125

– 40 to +125

– 40 to +125

22>2>22I2C FM+I2C FM+I2C FMI2C FMI2C FM+

332

2

2

ElectricalInterface

Number of addresses available
Supply voltage range (V)1.08 to 3.6

2.15 to 5.5

2.15 to 5.5

1.08 to 3.6

Measurement duration (ms)2

1.3 (low)
6.9 (high)

1.3 (low)
6.9 (high)

2.5 (low)
12.5(high)

2.5 (low)
12.5(high)

1.3 (low)
6.9 (high)Avg current consumption (µA)3

0.4 (low)
2.2 (high)18 (low)
20 (high)

1.7 (low)

1.7 (low)

0.4 (low)
2.2 (high)

0.08

180.2

0.2

0.08

1.5 × 1.5 × 0.55 mm3

1.5 × 1.5 × 0.6 mm3

2.5 × 2.5 × 0.9 mm3

2.5 × 2.5 × 0.9 mm3ISO17025 certification

nononoyes

Wettable flanks

noyes

nono

Idle current (µA)
OtherSize

1.08 to 3.6

2.3 to 5.5

Please note that above values are of indicatory value only.
For detailed information please consult the respective datasheets.
Temperature response times very much depend on thermal conductivity of the substrate material of the sensor.
Different measurement modes possible (differing either in resolution or repeatability).
“High” indicates a measurement with the highest precision/power mode (highest resolution, best repeatability), “low” indicates a measurement with the lowest precision/power mode (lowest resolution, least repeatability).
3
Values for one T measurement per second VDD = 3V; different measurement modes possible (differing either in resolution or repeatability)
4This product is upcoming and not available for purchase yet. For more information, please consult our sales team.
5This product is not recommended for new designs. Please refer to the successor product SHT43.
121.5 x 1.5× 0.54 mm3

yesnoTechnology at heart,
future in mind.

www.sensirion.com