Sensirion Announces Global Availability of the SFA40 Formaldehyde Sensor
Sensirion has announced the global availability of its SFA40 formaldehyde sensor, a miniature electrochemical HCHO sensor designed for seamless integration into a variety of indoor air quality applications. Available through Sensirion’s global network of authorized distribution partners, the SFA40 aims to make high-accuracy formaldehyde sensing more accessible for manufacturers.
A key differentiator of the SFA40 is its exceptional selectivity to formaldehyde, coupled with extremely low cross-sensitivity to common indoor gases such as ethanol and nitrogen dioxide. This design ensures outstanding accuracy, even in complex real-world environments where other volatile organic compounds are present, making it an ideal choice for critical air quality monitoring.
Beyond its sensing performance, the SFA40 combines ultra-low power consumption, with a typical average current of only 80 µA, and a compact footprint. It boasts a lifetime of more than six years, enabling the development of energy-efficient, battery-powered devices with reliable long-term operation. Each unit is factory-calibrated in Switzerland and provides a calibrated digital output via a standard I²C interface, simplifying integration into end products. The sensor also incorporates advanced anti-dry technology, contributing to its exceptional lifetime and long-term stability, and is capable of detecting low formaldehyde concentrations below limits established by leading health and building standards.
Specifications
| Product | Function | Interface | Power Consumption | Lifetime | Selectivity | Calibration | Key Technology |
|---|---|---|---|---|---|---|---|
| SFA40 | Miniature Electrochemical Formaldehyde (HCHO) Sensor | I²C | 80 µA (typical average) | > 6 years | Exceptional to HCHO, low cross-sensitivity to ethanol/NO2 | Factory-calibrated (Switzerland) | Advanced Anti-Dry Technology |
Key Features
- Miniature electrochemical formaldehyde (HCHO) sensor.
- Exceptional selectivity to formaldehyde.
- Extremely low cross-sensitivity to common indoor gases, including ethanol and nitrogen dioxide.
- Ensures outstanding accuracy in complex real-world environments.
- Ultra-low power consumption, with a typical average current of 80 µA.
- Compact footprint.
- Lifetime of more than six years.
- Enables the development of energy-efficient, battery-powered devices.
- Factory-calibrated in Switzerland.
- Provides a calibrated digital output via a standard I²C interface.
- Advanced anti-dry technology for exceptional lifetime and long-term stability.
- Detects low formaldehyde concentrations below WHO guidelines, the WELL Building Standard™, and the Chinese National Standard GB/T 18883-2022.
Applications
- Air purifiers
- Air conditioners
- Indoor air quality monitors
- Energy-efficient, battery-powered devices
- Continuous indoor air quality monitoring
Avalibility
The Sensirion SFA40 formaldehyde sensor is now globally available through Sensirion’s network of authorized distribution partners. Designed for seamless integration into air purifiers, air conditioners, and indoor air quality monitors, the SFA40 combines high formaldehyde selectivity, low cross-sensitivity, ultra-low power consumption, and a compact form factor for reliable indoor air quality monitoring. The sensor is factory-calibrated in Switzerland and features a standard I²C digital interface for easy integration into end products
