Optical Sensors & Detector – UV Photodiodes
UVA+UVB+UVC+VUV Photodiode – SG03R05-18
Broadband Deep UV Photodiode for UVA, UVB, UVC, and VUV Detection in Industrial and Research Applications
The SG03R05-18 is a broadband Silicon Carbide (SiC)-based photodiode designed for full-spectrum ultraviolet detection, covering UVA, UVB, UVC, and vacuum ultraviolet (VUV) radiation. With a wide responsivity range extending from 200 nm to 400 nm and sensitivity into the VUV region, it enables precise monitoring across multiple UV bands. Featuring a large 2.0 mm² active area, the SG03R05-18 provides strong photocurrents and high stability, making it suitable for industrial, scientific, and aerospace-grade applications. It offers ultra-low dark current (0.1 fA), 200 pF capacitance, and peak responsivity aligned with deep-UV detection requirements. Silicon Carbide technology ensures complete visible blindness, eliminating interference from non-UV wavelengths for accurate, pure UV measurements. Operating across −55 °C to +170 °C, it provides rugged and long-term stability in harsh environments. Applications include UV source calibration, sterilisation validation, VUV plasma monitoring, material testing, and photonics research, making it a versatile broadband UV photodiode solution.
Understanding UVA+UVB+UVC+VUV Photodiode - SG03R05-18
The SG03R05-18 is a versatile broadband photodiode capable of detecting UVA, UVB, UVC, and VUV radiation with high sensitivity and accuracy. Its 2.0 mm² active area ensures strong photocurrent output, making it suitable for both low-intensity and high-energy UV monitoring. The device achieves ultra-low dark current and high responsivity, enabling noise-free and reliable performance in demanding environments. Complete visible blindness ensures accurate UV-only detection without interference from IR or visible light. With rugged Silicon Carbide construction and wide operating temperatures (−55 °C to +170 °C), the SG03R05-18 is ideal for industrial, medical, environmental, and scientific monitoring applications.
Technical Specifications
| Feature | Specification |
| Spectral Range |
UVA, UVB, UVC, VUV (200 – 400 nm, extended into VUV)
|
| Peak Responsivity |
0.10 A/W (deep-UV region)
|
| Active Area | 2.0 mm² |
| Visible Blindness | > 10¹⁰ |
| 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 |
Key Features and Advantages
Broadband UV Detection (UVA to VUV)
The SG03R05-18 is uniquely designed to detect across the entire UV spectrum, including UVA, UVB, UVC, and vacuum ultraviolet (VUV), making it highly versatile for multi-band monitoring.
High Sensitivity and Stability
With a 2.0 mm² active area, the device generates strong photocurrents, ensuring excellent sensitivity even at very low UV intensities.
Noise-Free Performance
An ultra-low dark current of 0.1 fA guarantees stable and clean signals for precision measurements.
Complete Visible Blindness
Constructed with Silicon Carbide, the photodiode eliminates interference from visible and IR wavelengths, ensuring accurate UV-only detection.
Fast Response Time
Capacitance of 200 pF supports rapid responsiveness, making it suitable for real-time UV monitoring and control applications.
Rugged and Reliable
It operates reliably across −55 °C to +170 °C, allowing deployment in aerospace, defence, and harsh industrial conditions.
Durability and Long-Term Use
The SiC construction resists UV degradation, maintaining calibration accuracy and performance over long operational lifespans.
By combining broadband responsivity, rugged durability, and precise UV detection, the SG03R05-18 is a superior choice for multi-wavelength UV monitoring.
Applications Across Industries
Medical and Healthcare
The SG03R05-18 is used in UV sterilisation validation, phototherapy calibration, and medical equipment requiring multi-wavelength UV detection.
Industrial Sterilisation
It validates broadband UV lamps and LED systems for disinfection in pharmaceuticals, packaging, and cleanroom environments.
Environmental Monitoring
The photodiode supports atmospheric UV measurement, water purification, and air sterilisation systems, ensuring compliance with safety standards.
Scientific Research
Researchers employ it for multi-band UV source characterisation, plasma studies, and photonics experiments involving UVA through VUV.
Aerospace and Defence
The rugged construction and broadband sensitivity make it suitable for aerospace radiation monitoring and defence-grade UV detection systems.
Material Testing and Photodegradation
It supports material durability testing and photodegradation studies under broad UV and VUV exposure.
By covering UVA, UVB, UVC, and VUV in one device, the SG03R05-18 is a versatile broadband UV sensor trusted across industries.
Why Choose United Spectrum Instruments?
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Exclusive distributor of SGLUX broadband UV photodiodes in India
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Local stock ensures faster delivery and shorter lead times
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Competitive pricing across research, industrial, and medical sectors
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Application-specific consultation for broadband UV monitoring systems
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Nationwide after-sales service, technical training, and customer support
FAQs
What spectral range does the SG03R05-18 cover?
It detects UVA, UVB, UVC, and VUV radiation (200–400 nm and extended VUV).
What is the active area size?
It features a 2.0 mm² active area for high sensitivity.
Does it block visible and infrared light?
Yes, it ensures complete visible blindness for pure UV-only detection.
Can it operate in extreme conditions?
Yes, it works reliably from −55 °C to +170 °C.
How does United Spectrum support Indian customers?
By offering local stock, quick delivery, expert consultation, and nationwide after-sales service.
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FAQs
What spectral range does the SG03R05-18 cover?
It detects UVA, UVB, UVC, and VUV radiation (200–400 nm and extended VUV).
What is the active area size?
It features a 2.0 mm² active area for high sensitivity.
Does it block visible and infrared light?
Yes, it ensures complete visible blindness for pure UV-only detection.
Can it operate in extreme conditions?
Yes, it works reliably from −55 °C to +170 °C.
How does United Spectrum support Indian customers?
By offering local stock, quick delivery, expert consultation, and nationwide after-sales service.
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