Optical Sensors & Detector – UV Photodiodes
UVC Photodiode – SG01L-C18UVC
Large-Area UVC Photodiode for High-Sensitivity Industrial, Medical, Environmental, Aerospace, and Scientific Monitoring Applications
The SG01L-C18UVC is a Silicon Carbide (SiC)-based photodiode optimised for highly accurate detection of germicidal UVC radiation in the 220–280 nm range. With an extra-large 10.0 mm² active area, it delivers very strong photocurrents, making it suitable for applications requiring maximum sensitivity and wide-area coverage. Offering peak responsivity of 0.10 A/W at 265 nm, the SG01L-C18UVC ensures precise monitoring of sterilisation systems, UVC LEDs, and germicidal lamps. It features ultra-low dark current (0.1 fA) and capacitance of 1000 pF, providing stable, noise-free signals with responsive performance. Its complete visible blindness eliminates interference from IR and visible wavelengths, guaranteeing pure UVC-only detection. Designed for long-term reliability, it operates across −55 °C to +170 °C, making it ideal for harsh environments. Applications include sterilisation validation, air and water purification, lamp calibration, aerospace-grade UVC safety monitoring, and photonics research. The SG01L-C18UVC combines extra-large sensitivity and rugged stability for mission-critical germicidal monitoring.
Understanding UVC Photodiode - SG01L-C18UVC
The SG01L-C18UVC is a large-area Silicon Carbide photodiode designed for detecting germicidal UVC radiation between 220–280 nm. With a 10.0 mm² active area, it generates very strong photocurrents, ideal for high-sensitivity applications such as sterilisation monitoring and environmental disinfection systems. With peak responsivity at 265 nm, ultra-low dark current (0.1 fA), and 1000 pF capacitance, it provides noise-free and stable signal outputs for reliable UVC monitoring. The Silicon Carbide material ensures complete visible blindness, delivering accurate UVC-only detection without interference. Rugged and durable, the SG01L-C18UVC operates across −55 °C to +170 °C, ensuring long-term stability in industrial, medical, and aerospace applications.
Technical Specifications
| Feature | Specification |
| Spectral Range (UVC Specific) | 220 … 280 nm |
| Peak Responsivity | 0.10 A/W at 265 nm |
| Visible Blindness | > 10¹⁰ |
| Active Area | 10.0 mm² |
| Dark Current (1 V reverse bias) | 0.1 fA |
| Capacitance | 1000 pF |
| Short Circuit (10 mW/cm² at peak) | 95 µA |
| Temperature Coefficient | < 0.1 %/K |
| Operating Temperature | −55 … +170 °C |
| Storage Temperature | −55 … +170 °C |
| Soldering Temperature (3 s) | 260 °C |
| Maximum Reverse Voltage | 20 V |
Key Features and Advantages
Extra-Large Active Area for Maximum Sensitivity
The SG01L-C18UVC features a 10.0 mm² active area, producing very strong photocurrents and making it suitable for low-intensity or wide-beam UVC applications.
UVC-Specific Responsivity
It is optimised for detecting UVC wavelengths between 220–280 nm, with peak responsivity at 265 nm, ensuring precise germicidal monitoring.
High Signal Purity
Constructed with Silicon Carbide, the photodiode ensures complete visible blindness, eliminating interference from visible and IR radiation.
Noise-Free Operation
Ultra-low dark current (0.1 fA) guarantees clean, stable signals required for sensitive monitoring and measurement.
Fast and Reliable Response
With 1000 pF capacitance, the SG01L-C18UVC provides responsive performance, making it suitable for real-time applications such as sterilisation control.
Thermal Ruggedness
It operates across −55 °C to +170 °C, maintaining reliability under extreme conditions in aerospace, defence, and industrial environments.
Durability and Long-Term Stability
The SiC-based design ensures resistance to UVC degradation, supporting stable calibration and dependable long-term use.
By combining extra-large detection area, robust sensitivity, and UVC-specific selectivity, the SG01L-C18UVC is a high-performance choice for demanding germicidal applications.
Applications Across Industries
Medical and Healthcare
The SG01L-C18UVC is applied in UVC sterilisation monitoring, hospital disinfection, and phototherapy calibration systems where maximum sensitivity is required.
Industrial Sterilisation
It validates high-power UVC lamp and LED disinfection systems in cleanrooms, packaging, and pharmaceutical facilities.
Environmental Monitoring
The photodiode supports air sterilisation, water purification, and environmental UVC safety monitoring for compliance and public safety.
Scientific Research
Researchers use it for germicidal optical characterisation, material testing, and photonics experiments requiring extra-large responsivity.
Aerospace and Defence
The rugged design and wide thermal tolerance make it suitable for aerospace-grade UVC safety and flame detection systems.
Workplace and Safety Systems
It integrates into UVC exposure meters and portable safety monitors for occupational safety compliance.
By offering high sensitivity, extra-large responsivity, and UVC-only selectivity, the SG01L-C18UVC provides unmatched reliability for sterilisation and safety systems.
Why Choose United Spectrum Instruments?
-
Exclusive distributor of SGLUX UVC photodiodes in India
-
Local stock ensures faster delivery and reduced lead times
-
Competitive pricing for medical, industrial, and research customers
-
Application-specific consultation for UVC monitoring and integration
-
Nationwide after-sales service, technical support, and training
FAQs
What spectral range does the SG01L-C18UVC detect?
It detects UVC wavelengths between 220–280 nm.
What is the size of its active area?
It has an extra-large 10.0 mm² active area for maximum sensitivity.
Does it block visible and infrared light?
Yes, it achieves complete visible blindness for pure UVC detection.
Can it operate in extreme conditions?
Yes, it functions reliably from −55 °C to +170 °C.
How does United Spectrum support Indian customers?
By offering local inventory, fast delivery, expert consultation, and nationwide after-sales service.
GET IN TOUCH WITH US
Have Any Questions ?
FAQs
What spectral range does the SG01L-C18UVC detect?
It detects UVC wavelengths between 220–280 nm.
What is the size of its active area?
It has an extra-large 10.0 mm² active area for maximum sensitivity.
Does it block visible and infrared light?
Yes, it achieves complete visible blindness for pure UVC detection.
Can it operate in extreme conditions?
Yes, it functions reliably from −55 °C to +170 °C.
How does United Spectrum support Indian customers?
By offering local inventory, fast delivery, expert consultation, and nationwide after-sales service.
WHAT WE OFFER
Reliable Engineering Solutions for Modern Manufacturing
Industrial Laser Systems
Laser Sources
