The HIS20SMD-0 is a pulsable thermal infrared emitter that generates broadband infrared radiation closely approximating a black-body source. It operates by resistively heating a micro-fabricated element constructed from high-melting-point metals and coated with a patented nanostructured high-emissivity surface. When electrical current flows through the element, it reaches high operating temperatures and radiates infrared energy across a wide spectral range.

This emitter is particularly well-suited to NDIR (Non-Dispersive Infrared) gas detection — one of the most widely adopted techniques in industrial and environmental gas sensing. In an NDIR system, the infrared radiation passes through a gas sample cell, and a narrowband detector measures the absorbed energy at the characteristic wavelength of the target gas. This approach enables precise, selective detection of gases including CO₂, methane, carbon monoxide, nitrous oxide, and volatile organic compounds (VOCs).

The compact form factor, low electrical power requirement, and support for modulated operation make the HIS20SMD-0 particularly suitable for battery-powered portable instruments, IoT-connected sensors, and embedded sensing modules deployed across India’s industrial, environmental, and healthcare infrastructure.

Ultra-Compact 3 × 3 mm SMD Package

The miniature surface-mount housing integrates into any standard PCB layout and is fully compatible with automated pick-and-place assembly systems. This makes the HIS20SMD-0 an ideal component for Indian electronics manufacturers scaling production of gas sensors, air quality monitors, and portable analytical instruments.

Near Black-Body Broadband Infrared Radiation (2 – 20 µm)

With spectral coverage spanning the entire mid-infrared fingerprint region, the emitter supports a broad range of sensing modalities in a single device. It eliminates the need for multiple IR sources in multi-gas detection systems, simplifying optical design and reducing BOM cost.

High Emissivity Surface (> 0.9)

The nanostructured radiating surface achieves emissivity exceeding 0.9, delivering strong, stable infrared output. High emissivity translates directly into improved signal strength at the detector, enhancing measurement sensitivity and accuracy in gas sensing and spectroscopy applications.

Energy-Efficient Operation (175 mW Maximum)

Operating at just 175 mW maximum electrical power, the HIS20SMD-0 is well-suited for battery-operated and energy-constrained designs. This makes it an enabling technology for portable field instruments, wearable sensors, and IoT-connected devices requiring long operational life between charges.

Pulsable Thermal Output — Modulation up to 14 Hz

Support for modulated IR emission enables synchronous detection and lock-in amplifier techniques, significantly improving signal-to-noise ratio in sensitive measurement applications. This feature is essential in high-performance NDIR gas sensors and compact spectrometer designs.

Patented Nanostructure Technology

The proprietary nanostructured emitter coating provides superior thermal stability, consistent optical output, and extended operational lifetime compared to conventional filament-based infrared sources. This reliability is critical for instruments requiring continuous, drift-free operation in industrial and laboratory environments.

Production-Ready for High-Volume Manufacturing

The SMD format and standard package dimensions allow the HIS20SMD-0 to be incorporated directly into existing electronics manufacturing workflows, supporting Indian OEMs in developing cost-competitive, scalable sensing products for domestic and export markets.

Environmental Monitoring

Used in NDIR gas sensors for monitoring CO₂, methane, and other gases in air quality and environmental measurement systems.

Medical & Healthcare Devices

Integrated into respiratory gas analysis systems, breath alcohol analysers, and medical diagnostic instruments.

Smart Buildings & HVAC Systems

Used in indoor air quality monitoring devices for smart homes, offices, and intelligent building management systems.

Industrial Safety & Gas Detection

Helps detect hazardous gases in factories, refineries, and chemical plants to ensure worker safety.

Consumer Electronics & IoT

Used in smart sensors, wearable devices, and portable analytical tools requiring miniaturized infrared sources.

Scientific & Analytical Instruments

Supports infrared spectroscopy, laboratory measurement systems, and portable spectrometers used in research institutions.

United Spectrum Instruments is a specialised photonics and sensing technology company serving India’s research, industrial, and manufacturing sectors. As the sole authorised Indian distributor for this product, United Spectrum Instruments ensures that every customer receives genuine components backed by manufacturer-certified technical expertise and dedicated local support.

• Official authorisation: Guaranteed product authenticity with full manufacturer traceability and warranty support
• Technical consultation: Expert guidance on NDIR sensor design, optical path configuration, detector pairing, and PCB layout for thermal management
• Application engineering: Support for system integration across gas detection, spectroscopy, medical diagnostics, and environmental monitoring projects
• Fast domestic supply: Reduced procurement lead times with pan-India logistics covering all major cities and industrial zones
• Institutional procurement support: GST-compliant invoicing, purchase order processing, and documentation for government bodies, universities, and corporate procurement departments
• Responsive technical communication: Dedicated technical team available for pre-sales consultation, integration troubleshooting, and after-sales support
• Trusted by leading organisations: Serving research laboratories, OEM manufacturers, system integrators, and technology companies across India

United Spectrum Instruments serves customers across India’s key technology hubs including Bengaluru, Hyderabad, Delhi NCR, Mumbai, Chennai, Pune, Ahmedabad, Kolkata, and beyond — with pan-India shipping and support.