Bosch Sensortec


Humidity sensor measuring relative humidity, barometric pressure and ambient temperature

The BME280 is a humidity sensor especially developed for mobile applications and wearables where size and low power consumption are key design parameters. The unit combines high linearity and high accuracy sensors and is perfectly feasible for low current consumption, long-term stability and high EMC robustness. The humidity sensor offers an extremely fast response time and therefore supports performance requirements for emerging applications such as context awareness, and high accuracy over a wide temperature range.

Technical data

Parameter Technical data
Operation range
Technical data
Pressure: 300...1100 hPa
Temperature: -40…85°C
Supply voltage VDDIO
Supply voltage VDD
Technical data
1.2 ... 3.6 V
1.71 ... 3.6 V
Technical data
I²C and SPI
Average current consumption (typ.) (1Hz data refresh rate)
Technical data
1.8 μA @ 1 Hz (H, T)
2.8 μA @ 1 Hz (P, T)
3.6 μA @ 1 Hz (H, P, T)
T = temperature
Average current consumption in sleep mode
Technical data
0.1 μA
Humidity sensor
Response time (τ63%)
Accuracy tolerance
Technical data

1 s
±3% relative humidity
≤2% relative humidity
Pressure sensor
RMS Noise
Sensitivity Error

Temperature coefficient offset
Technical data

0.2Pa (equiv. to 1.7cm)
±0.25% (equiv. to 1m at 400m height change)

±1.5Pa/K (equiv. to ±12.6cm at 1 °C temperature change)
RoHS compliant, halogen-free, MSL1
Technical data
Package dimensions
Technical data
8-Pin LGA with metal
2.5 x 2.5 x 0.93 mm³




Woman doing sports using hearables and smartwatch

Wearables & hearables

Smartwatches, wristbands, smart clothes and hearables: whether supporting your fitness through calorie counting or helping you orient yourself through navigation, our accurate and ultra-low power sensing solutions turn a regular wearable into your daily companion!

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The BSEC software is only available for download after accepting the software license agreement:

BSEC license agreement

You will soon receive an e-mail with the download link.
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