Optical Sensors & Detector – UV Photodiodes
UVC Photodiode – SG01D-C18DUVC
Large-Area Dual-Band UVC Photodiode for High-Sensitivity Industrial, Medical, Environmental, and Scientific Monitoring Applications
The SG01D-C18DUVC is a Silicon Carbide (SiC)-based dual-band photodiode engineered for selective and accurate detection of germicidal UVC radiation in the 220–280 nm range. With a large 2.0 mm² active area, it provides high photocurrents and enhanced sensitivity, making it ideal for applications that demand precise UVC monitoring even at low intensities. Its dual-band design enhances selectivity, improving accuracy for UVC LED characterisation, lamp calibration, and sterilisation validation. Offering peak responsivity of 0.10 A/W at 265 nm, ultra-low dark current (0.1 fA), and 200 pF capacitance, the SG01D-C18DUVC ensures stable, noise-free signals and rapid response times. Built with SiC, it guarantees complete visible blindness, eliminating interference from visible and IR light. Rugged and thermally stable, it operates reliably from −55 °C to +170 °C. The SG01D-C18DUVC is the ideal choice for germicidal monitoring, industrial sterilisation, environmental safety, and advanced photonics research.
Understanding UVC Photodiode - SG01D-C18DUVC
The SG01D-C18DUVC is a large-area dual-band photodiode designed to detect UVC radiation between 220–280 nm, with peak responsivity at 265 nm. Its 2.0 mm² active area provides high photocurrents, ensuring maximum sensitivity for demanding sterilisation and disinfection systems. The dual-band design improves spectral selectivity, making it particularly effective for UVC LED and lamp calibration. With ultra-low dark current (0.1 fA) and capacitance of 200 pF, it delivers noise-free and fast-response signals for real-time monitoring. Built with Silicon Carbide, it ensures complete visible blindness and durability. Reliable from −55 °C to +170 °C, it suits medical, industrial, aerospace, and research 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 | 2.0 mm² |
| Dark Current (1 V reverse bias) | 0.1 fA |
| Capacitance | 200 pF |
| Short Circuit (10 mW/cm² at peak) | 19 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 |
| Design |
Dual-band UVC detection
|
Key Features and Advantages
Dual-Band Selectivity
The SG01D-C18DUVC incorporates dual-band detection, improving measurement precision for UVC LEDs, germicidal lamps, and sterilisation systems that demand wavelength-specific monitoring.
Large Active Area for Maximum Sensitivity
Its 2.0 mm² active area delivers high photocurrents, making it suitable for applications requiring strong signal output in low-intensity UVC environments.
High Accuracy and Responsivity
With peak responsivity of 0.10 A/W at 265 nm, the device ensures reliable performance in critical disinfection and sterilisation applications.
Pure UVC Detection
Constructed with Silicon Carbide, the device achieves complete visible blindness, eliminating interference from visible and IR wavelengths.
Noise-Free Performance
An ultra-low dark current of 0.1 fA guarantees stable, noise-free outputs, critical for sensitive UVC monitoring systems.
Fast Response Capability
The 200 pF capacitance supports rapid response times, ensuring effectiveness in real-time UVC safety monitoring and control systems.
Thermal Reliability
Operating from −55 °C to +170 °C, it remains stable across extreme industrial, aerospace, and defence conditions.
Durability and Longevity
SiC construction resists UVC degradation, maintaining calibration accuracy and stable performance over years of operation.
By offering dual-band accuracy, large-area sensitivity, and rugged stability, the SG01D-C18DUVC is a reliable photodiode for mission-critical UVC applications.
Applications Across Industries
Medical and Healthcare
The SG01D-C18DUVC is used in UVC sterilisation systems, phototherapy calibration, and dosimetry, ensuring accurate germicidal monitoring in hospitals and labs.
Industrial Sterilisation
It validates UVC lamps and LED-based disinfection systems in cleanrooms, food packaging lines, and pharmaceutical facilities.
Environmental Monitoring
This photodiode supports UVC-based water purification, air sterilisation, and environmental radiation studies for safety compliance.
Scientific Research
Researchers employ it for UVC optical characterisation, dual-band analysis of germicidal sources, and advanced photonics studies.
Aerospace and Defence
Its dual-band accuracy, rugged build, and wide temperature tolerance make it ideal for aerospace-grade UVC monitoring and defence safety systems.
Workplace and Public Safety
The SG01D-C18DUVC is integrated into safety monitoring devices, ensuring workplace compliance with UVC exposure standards.
By combining dual-band selectivity, large-area responsivity, and robust thermal performance, the SG01D-C18DUVC is a trusted sensor for UVC detection across industries
Why Choose United Spectrum Instruments?
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Exclusive distributor of SGLUX UVC photodiodes in India
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Local stock ensures faster delivery and reduced lead times
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Competitive pricing for medical, industrial, and scientific sectors
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Expert consultation for UVC system integration and monitoring applications
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Nationwide after-sales service, training, and technical support
FAQs
What spectral range does the SG01D-C18DUVC detect?
It covers UVC radiation between 220–280 nm.
What is unique about its dual-band design?
It provides enhanced spectral selectivity, ideal for UVC LED characterisation and lamp calibration.
What is the active area size?
It features a 2.0 mm² active area for maximum photocurrent sensitivity.
Can it be used in harsh environments?
Yes, it operates reliably between −55 °C and +170 °C.
How does United Spectrum support Indian customers?
By offering local stock, quick delivery, expert consultation, and pan-India after-sales service.
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Have Any Questions ?
FAQs
What spectral range does the SG01D-C18DUVC detect?
It covers UVC radiation between 220–280 nm.
What is unique about its dual-band design?
It provides enhanced spectral selectivity, ideal for UVC LED characterisation and lamp calibration.
What is the active area size?
It features a 2.0 mm² active area for maximum photocurrent sensitivity.
Can it be used in harsh environments?
Yes, it operates reliably between −55 °C and +170 °C.
How does United Spectrum support Indian customers?
By offering local stock, quick delivery, expert consultation, and pan-India after-sales service.
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