Optical Sensors & Detector – UV Photodiodes
UVA+UVB+UVC+VUV Photodiode – SG03R05-5
Broadband UV Photodiode for UVA, UVB, UVC, and VUV Detection in Industrial and Scientific Applications
The SG03R05-5 is a Silicon Carbide (SiC)-based broadband UV photodiode designed for accurate detection of UVA, UVB, UVC, and vacuum ultraviolet (VUV) radiation. With a compact 0.5 mm² active area, it combines high responsivity with low capacitance, making it suitable for fast, real-time monitoring and integration into compact devices. Covering the spectral range of 200–400 nm with sensitivity into the VUV, it provides versatile detection across multiple UV bands. Featuring peak responsivity of 0.10 A/W in the deep-UV region, ultra-low dark current (0.1 fA), and capacitance of just 50 pF, the SG03R05-5 ensures noise-free, stable signals and rapid responsiveness. Its Silicon Carbide construction guarantees complete visible blindness, eliminating interference from visible and IR wavelengths for accurate UV-only detection. With an operating range from −55 °C to +170 °C, the SG03R05-5 is rugged, durable, and ideal for applications in UV source calibration, plasma monitoring, disinfection validation, and photonics research.
Understanding UVA+UVB+UVC+VUV Photodiode - SG03R05-5
The SG03R05-5 is a compact broadband photodiode capable of detecting UVA, UVB, UVC, and VUV radiation with precision. Its 0.5 mm² active area balances sensitivity and compact integration, making it suitable for portable and embedded devices. With peak responsivity of 0.10 A/W in the deep-UV spectrum, ultra-low dark current (0.1 fA), and capacitance of 50 pF, it delivers clean, noise-free signals with fast response times. Silicon Carbide technology ensures complete visible blindness, providing pure UV-only detection. Rugged and reliable, the SG03R05-5 performs consistently in extreme temperatures (−55 °C to +170 °C), making it suitable for industrial, environmental, aerospace, and research-grade 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 | 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 Responsivity
The SG03R05-5 is capable of detecting UVA, UVB, UVC, and VUV radiation, covering a wide spectral range from 200 to 400 nm, extending into the vacuum UV region.
Compact Active Area for Integration
With a 0.5 mm² active area, it offers a compact footprint suitable for integration into portable instruments and embedded monitoring systems.
Fast Response Times
Its low capacitance of 50 pF enables rapid response, making it highly effective for real-time UV monitoring applications.
Noise-Free Signals
The ultra-low dark current (0.1 fA) ensures stable, clean signal outputs, even under low-intensity UV conditions.
Complete Visible Blindness
Constructed from SiC, the device completely rejects visible and IR wavelengths, ensuring pure UV-only detection.
Rugged Thermal Stability
Operating reliably from −55 °C to +170 °C, it performs consistently in outdoor, aerospace, and industrial-grade environments.
Durability and Longevity
Its SiC-based construction resists UV degradation, maintaining stable calibration and performance over long periods of continuous use.
By combining broadband detection, compact form factor, and rugged reliability, the SG03R05-5 is a versatile UV photodiode for diverse industrial and scientific applications.
Applications Across Industries
Medical and Healthcare
The SG03R05-5 is used in portable UV sterilisation monitoring systems, phototherapy calibration, and medical safety devices.
Industrial Sterilisation
It validates UV disinfection systems across pharmaceuticals, cleanrooms, and food packaging lines.
Environmental Monitoring
The device supports atmospheric UV radiation measurement, water treatment systems, and air sterilisation safety monitoring.
Scientific Research
Researchers utilise it for broadband UV source characterisation, plasma radiation detection, and photonics experiments spanning UVA to VUV.
Aerospace and Defence
Its compact size, ruggedness, and wide operating range make it suitable for aerospace radiation studies and defence safety systems.
Portable and Consumer Devices
The SG03R05-5 is ideal for integration into portable UV index meters, IoT safety devices, and handheld UV dosimeters.
By delivering fast responsiveness, broadband coverage, and compact integration, the SG03R05-5 is trusted for UVA, UVB, UVC, and VUV monitoring across multiple industries.
Why Choose United Spectrum Instruments?
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Exclusive distributor of SGLUX broadband UV photodiodes in India
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Local inventory ensures fast delivery and reduced lead times
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Competitive pricing for medical, industrial, and research customers
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Expert consultation for system design and integration of broadband UV monitoring
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Nationwide after-sales service, technical training, and customer support
FAQs
What spectral range does the SG03R05-5 detect?
It covers UVA, UVB, UVC, and VUV radiation (200–400 nm, extended VUV).
What is the size of its active area?
It has a compact 0.5 mm² active area, ideal for portable devices.
Does it block visible and infrared light?
Yes, it ensures complete visible blindness for pure UV detection.
Can it operate in extreme conditions?
Yes, it functions reliably between −55 °C and +170 °C.
How does United Spectrum support Indian customers?
By offering local stock, competitive pricing, and nationwide technical and after-sales service.
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FAQs
What spectral range does the SG03R05-5 detect?
It covers UVA, UVB, UVC, and VUV radiation (200–400 nm, extended VUV).
What is the size of its active area?
It has a compact 0.5 mm² active area, ideal for portable devices.
Does it block visible and infrared light?
Yes, it ensures complete visible blindness for pure UV detection.
Can it operate in extreme conditions?
Yes, it functions reliably between −55 °C and +170 °C.
How does United Spectrum support Indian customers?
By offering local stock, competitive pricing, and nationwide technical and after-sales service.
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