Broadband UV Photodiode – SG01L-5
The SG01L-5 is a Silicon Carbide (SiC) broadband UV photodiode designed with a large 1 mm² active area, optimised for applications requiring high...
Broadband UV Photodiode – SG01L-5
Large-Area Compact UV Photodiode for High Sensitivity, Stable Performance, and Reliable Detection in Harsh Environments
The SG01L-5 is a Silicon Carbide (SiC) broadband UV photodiode designed with a large 1 mm² active area, optimised for applications requiring high sensitivity and reliable ultraviolet detection. With a responsivity peak of 0.13 A/W at 280 nm and a spectral detection range between 221–358 nm, the SG01L-5 ensures accurate UV-only detection while maintaining excellent visible blindness. The large active area enhances photon capture efficiency, making it ideal for low-intensity UV environments and wide-beam exposure monitoring. The device features ultra-low dark current of 0.1 fA and capacitance of 60 pF, delivering a strong signal-to-noise ratio and stable operation. Designed to withstand temperatures from −55 °C to +170 °C, it ensures long-term stability in demanding applications. Suitable for solar radiation monitoring, sterilisation validation, flame detection, ozone research, photonics R&D, and aerospace UV sensing, the SG01L-5 combines compact packaging with high sensitivity and robust performance.
Understanding Broadband UV Photodiode - SG01L-5
The SG01L-5 is a high-sensitivity UV photodiode with a large 1 mm² active area for superior photon capture. Built with Silicon Carbide, it provides UV-only detection across the 221–358 nm range with a responsivity peak of 0.13 A/W at 280 nm. Its wide active area allows for strong signal output, particularly useful in low-intensity UV environments or when measuring broader beams of UV radiation. Featuring ultra-low dark current of 0.1 fA and capacitance of 60 pF, the device ensures stable and noise-free operation. With durability across −55 °C to +170 °C, the SG01L-5 is reliable for industrial, scientific, and aerospace use.
Technical Specifications
| Feature | Specification |
| Typical Responsivity at Peak Wavelength | 0.13 A/W |
| Wavelength of Max. Responsivity | 280 nm |
| Responsivity Range (S = 0.1 × Smax) | 221 … 358 nm |
| Visible Blindness (Smax / S>405 nm) | > 10¹⁰ |
| Active Area | 1.00 mm² |
| Dark Current (1 V reverse bias) | 0.1 fA |
| Capacitance | 60 pF |
| Short Circuit (10 mW/cm² at peak) | 8 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
Large Active Area for High Sensitivity
The SG01L-5 features a 1 mm² active area, enabling higher photon capture and stronger photocurrent output. This makes it highly effective for low-intensity UV environments and large-beam detection tasks.
Broadband UV Responsivity
With a spectral range of 221–358 nm and peak responsivity of 0.13 A/W at 280 nm, the device provides reliable UV-only detection, unaffected by visible or infrared light interference.
Low Noise and Stability
Its ultra-low dark current of 0.1 fA minimises noise, ensuring strong signal-to-noise ratios. Combined with 60 pF capacitance, it balances speed with stable performance in large-area applications.
Rugged and Compact Packaging
The compact form factor, combined with a robust design, makes it suitable for integration into a wide range of industrial and scientific systems, including outdoor applications.
Wide Temperature Range
The device can operate from −55 °C to +170 °C, ensuring reliable function in aerospace, defence, and challenging industrial environments.
Long-Term Reliability
Built with SiC technology, the SG01L-5 resists UV degradation, providing consistent responsivity over long periods of exposure, thereby reducing maintenance and replacement needs.
Overall, the SG01L-5 offers high sensitivity, low-noise performance, and durability, making it a trusted solution for mission-critical UV monitoring applications.
Applications Across Industries
Environmental and Atmospheric Monitoring
The SG01L-5 is widely used in solar UV monitoring, ozone detection, and climate research, where large-area photon capture ensures accurate measurements even under weak UV conditions.
Industrial Flame Detection
Its sensitivity makes it suitable for flame monitoring in refineries, power plants, and chemical facilities, ensuring rapid hazard detection and operational safety.
Medical and Sterilisation Validation
It is effective in UV sterilisation process monitoring, phototherapy equipment calibration, and UV dosimetry, ensuring compliance with strict healthcare and research standards.
UV Curing in Manufacturing
In production processes such as printing, adhesives, and coatings, the SG01L-5 monitors curing systems to ensure uniform exposure, product consistency, and process optimisation.
Photonics and Semiconductor Research
Its large-area sensitivity makes it ideal for laboratories studying UV-sensitive materials, photonic device development, and optical characterisation.
Aerospace and Defence Applications
The device is built for demanding environments, supporting aerospace UV sensing, arc detection, and military-grade monitoring in extreme temperature and mechanical conditions.
By combining large-area detection, SiC UV selectivity, and rugged durability, the SG01L-5 provides dependable ultraviolet monitoring across a variety of industries.
Why Choose United Spectrum Instruments?
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Official distributor of SGLUX UV photodiodes in India
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Competitive pricing with fast delivery from local inventory
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Technical consultation tailored for research and industrial applications
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Nationwide after-sales service, training, and integration support
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Trusted partner for universities, defence labs, and industrial R&D facilities
FAQs
What is the active area of the SG01L-5?
It has a large 1 mm² active area for increased photon capture.
What is the peak responsivity?
It provides 0.13 A/W at 280 nm.
Can it operate in extreme conditions?
Yes, it operates reliably from −55 °C to +170 °C.
What are its typical applications?
Solar UV monitoring, ozone research, sterilisation validation, UV curing, photonics R&D, and aerospace sensing.
How does United Spectrum support this product in India?
By offering fast delivery, expert consultation, and nationwide technical service.
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FAQs
What is the active area of the SG01L-5?
It has a large 1 mm² active area for increased photon capture.
What is the peak responsivity?
It provides 0.13 A/W at 280 nm.
Can it operate in extreme conditions?
Yes, it operates reliably from −55 °C to +170 °C.
What are its typical applications?
Solar UV monitoring, ozone research, sterilisation validation, UV curing, photonics R&D, and aerospace sensing.
How does United Spectrum support this product in India?
By offering fast delivery, expert consultation, and nationwide technical service.


