SKU: SENS-0788
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Sensirion SDP32-125PA Differential Pressure Sensor ±125 Pa, I2C, Tape Reel (250pcs)

₹3,029.00 (Inclusive of all taxes)
Out of Stock

The Sensirion SDP32-125PA is a high-precision digital differential pressure sensor with an I2C interface, designed for measuring ultra-low pressures up to ±125 Pa. It features integrated temperature compensation for both pressure and mass flow, making it ideal for integration into medical devices, HVAC systems, and industrial automation platforms requiring 3.3V logic compatibility.

Features

  • Ultra-low differential pressure sensing range of ±125 Pa with high accuracy.
  • Digital I2C interface with selectable addresses and 16-bit resolution for pressure and temperature.
  • Built-in temperature compensation for pressure and mass flow, eliminating need for external absolute pressure reference.
  • Fast response time of less than 3 ms and high update rate up to 2.2 kHz.
  • Optimized for low power consumption in triggered measurement mode, suitable for battery-powered applications.

Out of stock

Description

The Sensirion SDP32-125PA is a MEMS-based differential pressure sensor engineered for applications demanding high precision in ultra-low pressure environments. Its digital I2C output provides fully calibrated and temperature-compensated readings, ensuring reliable performance from -40°C to +85°C without the need for additional signal conditioning. The sensor’s fast response and high sampling rate enable real-time monitoring of dynamic pressure changes.

Designed for compatibility with air, nitrogen (N₂), and oxygen (O₂), this sensor is housed in a compact QFN package, offering a minimal footprint for space-constrained designs. Its robust construction and excellent long-term stability make it a dependable component for critical measurement tasks in controlled environments.

Key Features

  • Ultra-low differential pressure range: ±125 Pa.
  • Digital I2C interface with selectable addresses for multi-sensor setups.
  • Integrated 16-bit ADC for high-resolution pressure and temperature output.
  • Fully calibrated and temperature-compensated for pressure and mass flow.
  • Fast response time: <3 ms and high update rate up to 2.2 kHz.
  • Wide operating temperature range: -40°C to +85°C.
  • Low power consumption, optimized for triggered measurement mode.
  • Compact QFN package with minimal PCB footprint.

Applications

  • Medical respiratory devices and ventilators for precise airflow monitoring.
  • HVAC system airflow balancing and filter clog detection.
  • Automotive cabin air pressure management and intake monitoring.
  • Industrial process automation for gas flow control and burner management.
  • Laboratory equipment for low-pressure differential measurement.

Technical Specifications

Manufacturer Part NumberSDP32-125PA
Sensor TypeDifferential Pressure Sensor
Pressure Range±125 Pa
Output InterfaceDigital I2C (2-wire)
Operating Voltage3.3 V
Current Consumption5.5 mA (typical)
Resolution16-bit
Operating Temperature-40 °C to +85 °C
Response Time<3 ms
Update RateUp to 2.2 kHz
Compatible MediaAir, N₂, O₂
Package TypeQFN
Dimensions (L x W)8.2 mm x 3.44 mm
Weight<6 g

Frequently Asked Questions

What is the operating voltage for the SDP32-125PA sensor?

The Sensirion SDP32-125PA operates at a nominal voltage of 3.3V DC. It is critical to adhere to this voltage specification to ensure accurate sensor readings and prevent damage to the internal MEMS and digital circuitry.

Does this sensor require external calibration or compensation?

No, the SDP32-125PA is fully factory-calibrated and features integrated temperature compensation for both pressure and mass flow measurements. This eliminates the need for external absolute pressure compensation, simplifying system integration.

What communication protocol does the sensor use and how do I address multiple units?

The sensor uses a standard I2C (2-wire) digital interface. It supports selectable I2C addresses via configuration, allowing multiple sensors to be connected on the same bus for multi-point pressure monitoring applications.

What gases is the SDP32-125PA compatible with?

This sensor is designed and calibrated for use with clean, dry, non-corrosive gases including air, nitrogen (N₂), and oxygen (O₂). It is not suitable for use with condensing or aggressive media.

Package Includes

  • 1 x Tape Reel containing 250x Sensirion SDP32-125PA Pressure Sensors.

Additional Information

Weight 0.006 kg
Dimensions 0.82 × 0.344 cm