Optical Sensors & Detector – UV Photodiodes
UV Index (Erythema) – SG01L-E5
Large-Area UV Index Erythema Photodiode for Accurate Monitoring in Medical, Environmental, and Industrial Applications
The SG01L-E5 is a Silicon Carbide (SiC)-based UV photodiode designed for precise monitoring of erythema-weighted UV radiation, critical for UV index measurement and human skin safety applications. With a large 10.0 mm² active area, the device provides strong photocurrents and excellent sensitivity across the erythemal action spectrum. Its responsivity is specifically matched to human skin’s biological response to ultraviolet light, enabling accurate assessment of sunburn risk and UV exposure. Featuring ultra-low dark current (0.1 fA), high capacitance (1000 pF), and rugged stability, the SG01L-E5 ensures clean, noise-free signals and dependable performance. The SiC material guarantees complete visible blindness, removing interference from visible and infrared light for precise UV-only measurements. With an operating range from −55 °C to +170 °C, the SG01L-E5 is reliable in both outdoor and laboratory conditions. It is ideal for environmental monitoring, healthcare devices, personal UV exposure meters, and safety compliance instruments.
Understanding UV Index (Erythema) - SG01L-E5
The SG01L-E5 is a specialised erythema-weighted UV photodiode engineered to replicate human skin’s response to ultraviolet exposure. With a 10.0 mm² active area, it delivers strong photocurrents for accurate measurement of biologically relevant UV radiation. Its responsivity curve matches the erythemal action spectrum, ensuring precise UV index monitoring and sunburn risk evaluation. Complete visible blindness provided by SiC technology eliminates interference from non-UV wavelengths. With ultra-low dark current and high capacitance, it offers stable, noise-free signal outputs and fast response times. Rugged and durable, the SG01L-E5 operates reliably across −55 °C to +170 °C in demanding applications.
Technical Specifications
| Feature | Specification |
| Spectral Sensitivity |
Erythema-weighted UV range
|
| Peak Responsivity |
Aligned with erythema spectrum
|
| Visible Blindness | > 10¹⁰ |
| Active Area | 10.0 mm² |
| Dark Current (1 V reverse bias) | 0.1 fA |
| Capacitance | 1000 pF |
| Short Circuit (typical under solar UV) |
Strong photocurrent output
|
| 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
Erythema-Weighted Responsivity
The SG01L-E5 is designed to match the erythemal action spectrum, making it an ideal sensor for monitoring UV radiation relevant to human skin health and safety.
Large Active Area for Strong Signals
With its 10.0 mm² active area, the device provides high photocurrents and increased sensitivity, suitable for both direct solar measurements and controlled laboratory use.
Pure UV Detection
Constructed from Silicon Carbide, the photodiode achieves complete visible blindness, ensuring accurate UV-only detection without interference from visible or infrared radiation.
Noise-Free Operation
Its ultra-low dark current of 0.1 fA provides clean, stable signals, critical for sensitive UV index measurements.
Reliable Responsiveness
A capacitance of 1000 pF supports responsive and stable operation across varying environmental conditions.
Thermal Stability and Ruggedness
Operating from −55 °C to +170 °C, it remains reliable in outdoor monitoring stations, aerospace, or harsh industrial environments.
Long-Term Durability
The SiC material resists UV-induced degradation, ensuring stable calibration and accuracy over extended periods of use.
By combining erythema-weighted detection, large-area sensitivity, and rugged reliability, the SG01L-E5 delivers highly accurate UV index monitoring for safety and environmental applications.
Applications Across Industries
Environmental Monitoring
The SG01L-E5 is widely used in outdoor UV index monitoring stations, weather stations, and environmental research projects, helping assess UV exposure levels and sunburn risk.
Medical and Healthcare
It supports medical devices for dermatology, phototherapy calibration, and personal UV monitoring systems for skin health.
Consumer Electronics and Wearables
The compact, high-sensitivity design makes it suitable for integration into personal UV meters, smart wearables, and safety devices.
Industrial Safety
The sensor is used in workplace monitoring systems to ensure safe UV exposure levels in industries like welding, curing, and semiconductor manufacturing.
Scientific Research
Researchers utilise the SG01L-E5 for laboratory studies on UV radiation effects, erythema studies, and material degradation under solar UV.
Aerospace and Defence
The rugged design allows its integration into aerospace-grade systems monitoring UV radiation at high altitudes or in defence applications.
By combining biologically weighted detection, strong signal generation, and rugged durability, the SG01L-E5 provides accurate UV index monitoring across diverse applications.
Why Choose United Spectrum Instruments?
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Exclusive distributor of SGLUX UV photodiodes in India
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Local stock ensures reduced lead times and faster delivery
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Competitive pricing across environmental, medical, and research markets
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Expert consultation for integration into UV index monitoring systems
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Nationwide after-sales service, technical support, and training
FAQs
What is the SG01L-E5 designed to measure?
It measures erythema-weighted UV radiation, aligned with the human skin response to sunlight.
What is its active area size?
It features a large 10.0 mm² active area for strong photocurrents.
Does it block visible and IR light?
Yes, it provides complete visible blindness for accurate UV-only detection.
Can it be used outdoors?
Yes, it is designed for environmental monitoring and operates reliably across extreme temperatures.
How does United Spectrum support Indian customers?
By offering local inventory, quick delivery, expert consultation, and nationwide after-sales support.
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FAQs
What is the SG01L-E5 designed to measure?
It measures erythema-weighted UV radiation, aligned with the human skin response to sunlight.
What is its active area size?
It features a large 10.0 mm² active area for strong photocurrents.
Does it block visible and IR light?
Yes, it provides complete visible blindness for accurate UV-only detection.
Can it be used outdoors?
Yes, it is designed for environmental monitoring and operates reliably across extreme temperatures.
How does United Spectrum support Indian customers?
By offering local inventory, quick delivery, expert consultation, and nationwide after-sales support.
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