Summary of TE CONNECTIVITY’S HTU31 HUMIDITY SENSORS HAS SMALL SIZE, HIGH ACCURACY
TE Connectivity introduced the HTU31, a compact and highly accurate humidity and temperature sensor designed for harsh environments. It features a strict linear response across 0-100% humidity and -40° to 125°C temperatures. The sensor offers rapid response times (5 seconds in normal conditions, 10 seconds after condensation), low hysteresis, and IP67-rated sealing with filter options. Available in both digital and analog versions, the digital model supports two I2C addresses for multi-location monitoring on a single bus line.
Parts used in the HTU31 Sensor:
- HTU31 humidity die structure
- IP67 rated sealing
- Filter options
- Digital version with dual I2C addresses
- Analog version
TE Connectivity released the HTU31 humidity and temperature sensor, presented as one of the smallest and most accurate humidity sensors currently available. The sensor provides precision measurement, fast response time, low hysteresis, and sustained performance, even in harsh environments.

The HTU31 keeps a strict linear response curve through its humidity (0-100%) and temperature (-40° to 125°C) ranges, respectively, and its humidity die structure enables a response time of t63% in 5 sec. Even after condensation the response time is t63% in 10 sec.
Key features of the HTU31 humidity and temperature sensor include:
- Precision engineering: Designed with precision engineering, HTU31’s linear response enables optimal system performance. It keeps a strict linear response curve through humidity (0-100%) and temperature (-40° to 125°C), respectively.
- Fast response time: HTU31’s humidity die structure enables fast response time (t63% in 5 sec). Even after condensation the response time is t63% in 10 sec, enabling sustained system performance.
- High performance: HTU31 provides a specific die and IP67 rated sealing with filter options that enable sustained performance, low hysteresis and precise environment measurement even when exposed to high temperature, high humidity or condensation events.
- Digital and analog versions: The HTU31 comes in a digital and analog version. The digital version offers two I2C addresses, which facilitates monitoring humidity and temperature in two locations using a single I2C bus line.
The IP67-rated device offers filter options for sustained performance, low hysteresis, and precise environment measurement under high temperature, high humidity, or condensation events. The HTU31 comes in a digital model with two I2C addresses, and an analog version.
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- What are the operating ranges for the HTU31?
The sensor operates within a humidity range of 0-100% and a temperature range of -40° to 125°C. - How fast is the response time of the HTU31?
The response time is t63% in 5 seconds normally and t63% in 10 seconds even after condensation. - Does the HTU31 offer protection against harsh environments?
Yes, it features IP67 rated sealing and filter options for sustained performance under high temperature, humidity, or condensation. - Can the HTU31 be used in multiple locations simultaneously?
The digital version offers two I2C addresses, facilitating monitoring in two locations using a single I2C bus line. - Is there an analog version of the HTU31 available?
Yes, the HTU31 comes in both a digital and an analog version. - What makes the HTU31 suitable for precision engineering?
Its linear response curve through the full humidity and temperature ranges enables optimal system performance. - How does the HTU31 handle condensation events?
It maintains precise environment measurement with a response time of t63% in 10 seconds following condensation. - What is the primary advantage of the digital version's I2C addresses?
Having two I2C addresses allows users to monitor humidity and temperature in two different locations on one bus line.
