Sensirion STS30A-DIS-B2.5KS Digital Temperature Sensor ±0.3°C, I2C Interface, 8-pin DFN

Name: Sensirion STS30A-DIS-B2.5KS Digital Temperature Sensor ±0.3°C, I2C Interface, 8-pin DFN
Brand: Sensirion
SKU: SENS-3850
Price: 249.00 INR
Availability: OutOfStock

₹249.00 (Inclusive of all taxes)

Out of Stock

The Sensirion STS30A-DIS-B2.5KS is a high-precision digital temperature sensor with ±0.3°C accuracy, featuring an I2C interface for seamless integration with microcontrollers like Arduino, Raspberry Pi, ESP32, and STM32. Its compact 8-pin DFN package is designed for space-constrained industrial and consumer applications.

Features

High accuracy of ±0.3°C (typical from 0–65°C)
I2C interface with two selectable 7-bit addresses (0x4A/0x4B)
Ultra-low power consumption, averaging below 2 µA at 1 Hz
Wide operating temperature range from -40°C to 125°C
Compact 8-pin DFN package (3.0 x 3.0 x 1.0 mm)

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Description

The STS30A-DIS-B2.5KS utilizes Sensirion’s advanced CMOSens® technology, integrating a high-performance MEMS sensing element with a digital signal processor on a single chip. This architecture ensures excellent long-term stability and high signal-to-noise ratio for precise temperature measurements across a broad range.

The sensor supports flexible operation modes, including single-shot and periodic measurements, with three user-selectable repeatability levels (High: 0.06°C, Medium: 0.12°C, Low: 0.24°C) to optimize the trade-off between performance and power consumption. Integrated CRC error detection on the I2C bus guarantees data integrity in electrically noisy environments.

Key Features

High-precision digital temperature sensing with ±0.3°C typical accuracy.
Configurable I2C communication with address pins for bus flexibility.
Selectable repeatability modes for balancing precision and power draw.
Integrated 16-bit ADC and digital signal conditioning on-chip.
Ultra-low power operation, ideal for battery-powered devices.
Dedicated ALERT and RESET pins for system control and fault recovery.
Robust 8-pin DFN package with exposed thermal pad for optimal PCB heat sinking.
CRC-protected data transmission for enhanced communication reliability.

Applications

Precision environmental monitoring in HVAC and building automation systems.
Thermal management and overheating protection in power electronics and battery packs.
Medical and wearable devices requiring accurate body or ambient temperature readings.
Industrial process control and condition monitoring in manufacturing equipment.
Consumer electronics, including smartphones, tablets, and IoT sensor nodes.

Technical Specifications

Manufacturer Part Number	STS30A-DIS-B2.5KS
Sensor Type	Digital Temperature Sensor
Measurement Range	-40°C to 125°C
Accuracy	±0.3°C (typical, 0–65°C)
Repeatability	0.12°C (Medium mode)
Resolution	0.01°C
Interface	I2C, 7-bit address (0x4A / 0x4B)
Supply Voltage	2.4 V to 5.5 V DC
Average Current Consumption	< 2 µA (at 1 Hz)
Peak Measurement Current	0.6 mA to 1.5 mA
Package	8-pin DFN (3.0 x 3.0 x 1.0 mm)
Operating Humidity Range	0% to 100% RH (non-condensing)

Frequently Asked Questions

What is the operating voltage range for the STS30A sensor?

The STS30A operates from 2.4V to 5.5V DC, making it compatible with both 3.3V and 5V logic systems commonly found in Arduino, Raspberry Pi, and other microcontroller platforms.

How do I change the I2C address of this sensor?

The sensor has two factory-programmed 7-bit I2C addresses: 0x4A and 0x4B. The specific address for the STS30A-DIS-B2.5KS variant is fixed and cannot be changed via software; please refer to the product label or datasheet to confirm the assigned address for your unit.

What is the difference between the High, Medium, and Low repeatability modes?

These modes allow you to balance measurement precision against power consumption. High repeatability (0.06°C) uses more current for maximum accuracy, Medium (0.12°C) offers a good balance, and Low repeatability (0.24°C) minimizes power use for battery-critical applications. The mode is selectable via the I2C command set.

Can this sensor be used for body temperature measurement?

While its accuracy (±0.3°C) and range (-40°C to 125°C) are suitable, the STS30A is a general-purpose ambient temperature sensor. For clinical-grade body temperature measurement, specific calibration for skin contact and thermal coupling is required, which is outside its standard design intent.