Optical Sensors & Detector – UV Photodiodes
UVC Photodiode – SG01D-C5DUVC
Large-Area Dual-Band UVC Photodiode for Precise Industrial, Medical, Aerospace, Environmental, and Scientific Applications
The SG01D-C5DUVC is a Silicon Carbide (SiC)-based dual-band photodiode designed for precise detection of germicidal UVC radiation in the 220–280 nm range. With a large 2.0 mm² active area, it delivers strong photocurrents, providing maximum sensitivity even at low-intensity UVC levels. Its dual-band architecture enhances spectral selectivity, making it ideal for UVC LED characterisation, lamp calibration, and sterilisation system monitoring. Offering peak responsivity of 0.10 A/W at 265 nm, ultra-low dark current (0.1 fA), and capacitance of 200 pF, the SG01D-C5DUVC ensures noise-free, stable signals with fast response times for real-time monitoring. The Silicon Carbide design guarantees complete visible blindness, ensuring pure UVC-only detection without interference from IR or visible light. Rugged and reliable, the device operates across −55 °C to +170 °C. It is widely applied in medical sterilisation, industrial disinfection, environmental purification, aerospace safety, and scientific photonics research.
Understanding UVC Photodiode - SG01D-C5DUVC
The SG01D-C5DUVC is a dual-band large-area photodiode optimised for germicidal UVC detection between 220–280 nm, with peak responsivity at 265 nm. Its 2.0 mm² active area ensures strong photocurrents, delivering maximum sensitivity for sterilisation monitoring and UVC LED calibration. Dual-band selectivity enhances accuracy, making it highly effective in applications requiring wavelength-specific monitoring. With ultra-low dark current (0.1 fA) and capacitance of 200 pF, it provides noise-free, stable signals and fast responsiveness for real-time use. Built from Silicon Carbide, it guarantees visible blindness, ensuring pure UVC-only detection. Rugged and thermally stable, it operates reliably across −55 °C to +170 °C.
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 Spectral Selectivity
The SG01D-C5DUVC’s dual-band design provides enhanced accuracy in wavelength-specific UVC detection, making it ideal for UVC LED characterisation, lamp calibration, and sterilisation monitoring.
Large Active Area for High Sensitivity
With its 2.0 mm² active area, the device generates strong photocurrents, ensuring high detection accuracy even under low UVC intensity conditions.
UVC-Selective Responsivity
Optimised for the 220–280 nm germicidal band, it offers peak responsivity of 0.10 A/W at 265 nm.
Noise-Free Signal Output
The ultra-low dark current (0.1 fA) ensures highly stable, noise-free signals critical for sensitive monitoring.
Fast Responsiveness
Capacitance of 200 pF enables rapid signal response, supporting real-time control in sterilisation and safety systems.
Pure UVC Detection
Constructed from Silicon Carbide, it ensures complete visible blindness, rejecting visible and infrared interference.
Thermal Durability
Capable of operating between −55 °C and +170 °C, it provides reliable performance across industrial, aerospace, and defence environments.
Long-Term Stability
Resistant to UVC degradation, it maintains calibration accuracy and long-term reliability in continuous-use environments.
By combining dual-band detection, large-area sensitivity, and rugged reliability, the SG01D-C5DUVC is a trusted photodiode for mission-critical UVC applications.
Applications Across Industries
Medical and Healthcare
The SG01D-C5DUVC supports UVC sterilisation monitoring, disinfection validation, and phototherapy calibration in healthcare facilities.
Industrial Sterilisation
It validates UVC disinfection systems in cleanrooms, food packaging, and pharmaceutical manufacturing.
Environmental Applications
The photodiode is used for water purification, air sterilisation, and environmental UVC monitoring for safety and compliance.
Scientific Research
Researchers employ it for optical characterisation of UVC sources, dual-band wavelength studies, and photonics experiments.
Aerospace and Defence
Its rugged design and wide thermal range make it suitable for aerospace-grade UVC monitoring, flame detection, and defence safety applications.
Workplace and Public Safety
The SG01D-C5DUVC is integrated into UVC safety meters and portable monitors to regulate exposure and ensure compliance.
By delivering dual-band selectivity, large-area responsivity, and durable construction, the SG01D-C5DUVC is a versatile UVC sensor 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 fast delivery and shorter lead times
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Competitive pricing for medical, industrial, and research customers
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Expert consultation for UVC integration and monitoring systems
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Nationwide after-sales service, training, and technical support
FAQs
What spectral range does the SG01D-C5DUVC detect?
It detects UVC wavelengths from 220–280 nm.
What is unique about its dual-band design?
It improves selectivity and precision for UVC LED characterisation and lamp calibration.
What is its active area size?
It features a large 2.0 mm² active area for strong photocurrents.
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 stock, fast delivery, technical expertise, and nationwide after-sales service.
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FAQs
What spectral range does the SG01D-C5DUVC detect?
It detects UVC wavelengths from 220–280 nm.
What is unique about its dual-band design?
It improves selectivity and precision for UVC LED characterisation and lamp calibration.
What is its active area size?
It features a large 2.0 mm² active area for strong photocurrents.
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 stock, fast delivery, technical expertise, and nationwide after-sales service.
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