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Silicon Labs Digital Output Temperature and Humidity Sensor, Surface Mount, Serial-I2C Interface, ±0.4 °C, ±3 %RH SI7021
Specifications
| Country of Origin | India |
|---|---|
| Accuracy | ±0.4 °C, ±3 %RH |
| Brand | Silicon Labs |
| Height | 750μm |
| Length | 3mm |
| Model | SI7021 |
| RH Range | 0 to 100 % |
| Width | 3mm |
| Mount Type | Surface |
| Output type | Digital |
| Series | SI7021 |
| Maximum Operating Temperature | 125°C |
| Package Type | DFN |
| Sub Type | Temperature & Humidity Sensor |
| Minimum Operating Temperature | -40°C |
| Interface Type | Serial-I2C |
| Pin Count | 6 |
| Maximum Supply Voltage | 3.6V |
| Minimum Supply Voltage | 1.9V |
| Wide operating voltage range | 1.9 V to 3.6 V |
Key Features
- Integrates temperature and humidity sensing in a compact surface mount DFN package.
- Features a serial I2C interface for easy integration with microcontrollers.
- Operates over a wide voltage range of 1.9 V to 3.6 V for versatile applications.
- Includes on-chip calibration and heater for reliable long-term stability.
- Suitable for use in consumer electronics, HVAC, industrial control, and environmental monitoring.
- Wide operating temperature range from -40°C to 125°C supports harsh conditions.
- Small form factor with 3mm x 3mm footprint and 750μm height ensures space saving.
- Pre-installed protective filter helps maintain sensor accuracy and durability.
Product Description
Silicon Labs SI7021 digital output temperature and humidity sensor combines a temperature sensor, humidity sensor, calibration circuitry, and I2C serial interface in a single compact and surface mount DFN package. It provides precise environmental measurements with an accuracy of ±0.4 °C for temperature and ±3 %RH for humidity.
The device features a wide supply voltage range from 1.9 V to 3.6 V, enabling flexible power configurations. Its small 3mm by 3mm footprint and 750μm package height make it ideal for integration in compact electronics such as laptops, tablets, smartphones, and industrial modules.
The integrated on-chip heater and calibration ensure long term stability and enhanced performance in humid or varying temperature environments. The sensor communicates via an I2C serial interface, facilitating easy connection to microcontrollers and processors.
This sensor is widely used in applications including asset and goods tracking, HVAC systems, thermostats, humidistats, wireless sensing, environmental monitoring, and detection systems related to gas, smoke, fire, and water presence.
Its ability to operate over a broad temperature range of -40°C to 125°C and relative humidity range of 0 to 100 %RH supports demanding industrial and commercial environments. The pre-installed protective filter maintains the sensor’s reliability and accuracy over extended periods.
Integrates temperature and humidity sensing with digital I2C output. Compact surface mount DFN package measuring 3mm x 3mm. Wide operating voltage range from 1.9 V to 3.6 V. High accuracy: ±0.4 °C temperature, ±3 %RH humidity.
Pre-calibrated with on-chip signal conditioning and heater. Temperature range: -40°C to 125°C, humidity 0 to 100 %RH. Low power consumption suitable for battery-powered systems. Applications in HVAC, consumer electronics, industrial automation, and environmental sensing.
This advanced temperature and humidity sensor from Silicon Labs delivers precise, reliable performance critical for controlling environmental parameters in various industrial, commercial, and consumer device applications. Explore more sensors and related components in EnvMart’s sensor category.
Explore more products in our Temperature & Humidity Sensor category.
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Frequently Asked Questions
The SI7021 sensor has an accuracy of ±0.4 °C for temperature and ±3 %RH for humidity.
It operates over a wide temperature range from -40°C to 125°C.
The sensor supports a supply voltage range from 1.9 V to 3.6 V.
This model features a serial I2C interface for easy integration with microcontrollers.
The sensor has a compact footprint of 3mm x 3mm and a height of 750μm.
It is suitable for use in consumer electronics, HVAC systems, industrial control, and environmental monitoring.
Yes, it includes on-chip calibration and a heater for reliable long-term stability.
The sensor supports a relative humidity range from 0 to 100 %RH.
The SI7021 is designed for surface mount installation.
This model has a pin count of 6.
The country of origin for the SI7021 sensor is India.
The output type of this sensor is digital.
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