Optical Sensors & Detector – UV Photodiodes
UVA+UVB+UVC+VUV Photodiode – SG03R80-5
High-Sensitivity Broadband UV Photodiode for UVA, UVB, UVC, and VUV Detection in Compact Scientific Instruments
The SG03R80-5 is a high-performance Silicon Carbide (SiC)-based broadband photodiode designed to detect UVA, UVB, UVC, and vacuum ultraviolet (VUV) radiation with exceptional accuracy. Covering the full UV spectrum from 200–400 nm and extending into the VUV region, it offers reliable multi-band detection in one compact sensor. With a 0.5 mm² active area, the SG03R80-5 balances sensitivity and integration flexibility, making it suitable for handheld meters, embedded UV systems, and laboratory instruments. It delivers peak responsivity of 0.10 A/W in the deep-UV range, ultra-low dark current (0.1 fA), and low capacitance (50 pF), ensuring fast responsiveness and noise-free signals. Its Silicon Carbide design guarantees complete visible blindness, removing interference from visible and infrared light. Rugged and reliable, the device performs across −55 °C to +170 °C, making it ideal for sterilisation validation, environmental safety monitoring, aerospace radiation analysis, plasma diagnostics, and advanced photonics research applications.
Understanding UVA+UVB+UVC+VUV Photodiode - SG03R80-5
The SG03R80-5 is a broadband photodiode engineered for high-precision UVA, UVB, UVC, and VUV radiation detection. With its compact 0.5 mm² active area, it delivers strong photocurrents while maintaining a small footprint for integration into portable and embedded systems. Designed with Silicon Carbide, it achieves complete visible blindness, ensuring accurate UV-only detection without interference from IR or visible light. Its peak responsivity of 0.10 A/W, ultra-low dark current (0.1 fA), and capacitance of 50 pF ensure rapid responsiveness and clean, noise-free signals. Rugged thermal performance from −55 °C to +170 °C makes it reliable for long-term monitoring in demanding environments.
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 | 0.5 mm² |
| Visible Blindness | > 10¹⁰ |
| Dark Current (1 V reverse bias) | 0.1 fA |
| Capacitance | 50 pF |
| Short Circuit (10 mW/cm² at peak) | 4.7 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
The SG03R80-5 is capable of detecting UVA, UVB, UVC, and VUV radiation, providing a complete monitoring solution across the ultraviolet spectrum.
Compact and Efficient Design
Its 0.5 mm² active area ensures reliable photocurrents while keeping the device small, ideal for portable UV meters and embedded safety systems.
High Sensitivity and Fast Response
Peak responsivity of 0.10 A/W and low capacitance of 50 pF enable fast and precise signal output for real-time monitoring.
Noise-Free Operation
Ultra-low dark current (0.1 fA) ensures clean, stable signals with minimal noise interference, critical for scientific and industrial measurements.
Complete Visible Blindness
SiC technology ensures total rejection of visible and infrared light, guaranteeing accurate UV-only detection.
Thermal Ruggedness
The device operates reliably from −55 °C to +170 °C, making it suitable for extreme outdoor, aerospace, and industrial environments.
Durability and Stability
With resistance to UV-induced degradation, the SG03R80-5 ensures long-term calibration stability and consistent performance across demanding applications.
Together, these features make the SG03R80-5 a reliable, compact, and broadband solution for critical UV monitoring tasks.
Applications Across Industries
Medical and Healthcare
The SG03R80-5 is applied in UV sterilisation systems, phototherapy calibration, and medical UV monitoring for safety compliance.
Industrial Sterilisation
It validates UV disinfection lamps and LEDs used in pharmaceutical facilities, food packaging, and cleanroom production environments.
Environmental Monitoring
The photodiode enables accurate UV index measurements, water disinfection monitoring, and air sterilisation control.
Scientific Research
Researchers employ the SG03R80-5 for multi-band UV source characterisation, plasma radiation diagnostics, and advanced photonics studies.
Aerospace and Defence
Its rugged build and wide temperature range make it suitable for aerospace UV radiation monitoring and defence-grade safety systems.
Portable and Consumer Devices
With its compact size, it integrates seamlessly into portable UV dosimeters, IoT-enabled UV sensors, and safety wearables.
By delivering high sensitivity, broadband coverage, and rugged reliability, the SG03R80-5 is trusted across industries for UVA, UVB, UVC, and VUV monitoring.
Why Choose United Spectrum Instruments?
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Authorised distributor of SGLUX UV photodiodes in India
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Local inventory ensures faster deliveries and reduced lead times
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Competitive pricing for industrial, healthcare, and research applications
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Expert consultation for integration into broadband UV systems
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Nationwide technical training, after-sales service, and customer support
FAQs
What UV spectrum does the SG03R80-5 cover?
It detects UVA, UVB, UVC, and VUV radiation (200–400 nm, extended VUV).
What is the active area size?
It has a compact 0.5 mm² active area, suitable for embedded systems.
Does it block visible and IR interference?
Yes, it provides complete visible blindness for accurate UV-only detection.
Can it operate in extreme conditions?
Yes, it functions reliably across −55 °C to +170 °C.
How does United Spectrum support customers in India?
By providing local stock, expert guidance, competitive pricing, and nationwide after-sales service.
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FAQs
What UV spectrum does the SG03R80-5 cover?
It detects UVA, UVB, UVC, and VUV radiation (200–400 nm, extended VUV).
What is the active area size?
It has a compact 0.5 mm² active area, suitable for embedded systems.
Does it block visible and IR interference?
Yes, it provides complete visible blindness for accurate UV-only detection.
Can it operate in extreme conditions?
Yes, it functions reliably across −55 °C to +170 °C.
How does United Spectrum support customers in India?
By providing local stock, expert guidance, competitive pricing, and nationwide after-sales service.
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