Broadband UV Photodiode – SG01XL-5
The SG01XL-5 is a Silicon Carbide (SiC) broadband UV photodiode featuring an extra-large 3.0 mm² active area for maximum photon capture and signal output. With...
Broadband UV Photodiode – SG01XL-5
Extra-Large Area UV Photodiode for High-Sensitivity, Reliable, and Long-Term Industrial and Scientific Applications
The SG01XL-5 is a Silicon Carbide (SiC) broadband UV photodiode featuring an extra-large 3.0 mm² active area for maximum photon capture and signal output. With a responsivity peak of 0.13 A/W at 280 nm and a detection range from 221–358 nm, it delivers highly accurate ultraviolet-only detection while completely rejecting visible and infrared wavelengths. Its extra-large active area makes it particularly suitable for low-intensity UV detection, wide-beam monitoring, and applications requiring stronger signal currents. The SG01XL-5 features ultra-low dark current (0.1 fA) and capacitance (250 pF), balancing sensitivity with stable performance. Operating across −55 °C to +170 °C, it is designed to withstand extreme conditions, making it highly reliable for industrial, aerospace, medical, and research environments. Applications include solar UV monitoring, ozone research, flame detection, sterilisation validation, UV curing process control, and photonics R&D. The SG01XL-5 combines large-area design, sensitivity, and durability for mission-critical ultraviolet detection.
Understanding Broadband UV Photodiode - SG01XL-5
The SG01XL-5 is an extra-large-area UV photodiode that combines Silicon Carbide detection technology with a 3.0 mm² active area, ensuring exceptional photon capture efficiency. With a responsivity of 0.13 A/W at 280 nm and a detection range of 221–358 nm, it offers precise UV-only measurements with complete visible blindness. The large active area enables stronger photocurrents, making it suitable for wide-area exposure and low-intensity UV monitoring applications. Despite its size, it maintains ultra-low dark current (0.1 fA) and delivers stable performance with 250 pF capacitance. With reliable operation between −55 °C and +170 °C, the SG01XL-5 is ideal for industrial, aerospace, and scientific UV applications.
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 | 3.00 mm² |
| Dark Current (1 V reverse bias) | 0.1 fA |
| Capacitance | 250 pF |
| Short Circuit (10 mW/cm² at peak) | 48 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
Extra-Large Active Area for Maximum Sensitivity
The SG01XL-5 has a 3.0 mm² active area, which is significantly larger than standard photodiodes, allowing it to capture more photons and generate stronger photocurrents.
SiC UV Selectivity
Built with Silicon Carbide, it detects only UV radiation (221–358 nm) with peak responsivity at 280 nm, while rejecting visible and infrared light for interference-free performance.
High Responsivity and Strong Output
At 0.13 A/W peak responsivity, combined with its large surface area, the SG01XL-5 provides strong signal currents suitable for both low-light and wide-beam UV monitoring.
Low Dark Current and Stable Noise Performance
Despite its size, the device maintains an ultra-low dark current of 0.1 fA, ensuring minimal noise and strong signal-to-noise ratios.
Capacitance Balanced with Area Size
The capacitance of 250 pF matches the larger area, delivering stable measurements in high-sensitivity applications without sacrificing reliability.
Thermal and Environmental Stability
The device functions reliably across −55 °C to +170 °C, making it suitable for demanding aerospace, defence, and industrial environments.
Long-Term Reliability
The SG01XL-5 is resistant to UV degradation, providing stable responsivity over years of use in continuous monitoring systems.
In essence, the SG01XL-5 offers unmatched sensitivity, robust packaging, and long-term operational stability, making it a preferred choice for mission-critical ultraviolet detection.
Applications Across Industries
Environmental and Climate Monitoring
The SG01XL-5 is excellent for solar UV monitoring, ozone research, and atmospheric science. Its extra-large active area ensures accurate results even under weak UV radiation conditions.
Industrial Flame Detection
Its high sensitivity allows it to detect faint UV flame signatures in refineries, energy plants, and industrial safety systems, improving hazard prevention and workplace security.
Medical and Laboratory Applications
The photodiode supports UV sterilisation monitoring, dosimetry, and phototherapy calibration. Its strong photon capture capability ensures precise results in healthcare and laboratory equipment validation.
UV Curing in Manufacturing
In industries such as printing, adhesives, and coatings, the SG01XL-5 ensures accurate monitoring of UV curing processes, enhancing repeatability and product quality.
Photonics and Semiconductor R&D
Its large active area makes it suitable for testing UV-sensitive materials, developing advanced photonic devices, and semiconductor process validation.
Aerospace and Defence
With its ruggedness and extreme thermal tolerance, the SG01XL-5 is ideal for aerospace UV sensing, arc detection, and military-grade monitoring systems.
The SG01XL-5 provides extra-large area sensitivity, reliability, and robust design, making it an essential ultraviolet detector for industrial, scientific, and defence applications.
Why Choose United Spectrum Instruments?
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Official distributor of SGLUX UV photodiodes in India
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Competitive pricing with reliable local inventory for faster delivery
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Expert consultation tailored to industry and research applications
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Pan-India after-sales service, training, and technical support
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Trusted supplier for universities, defence, aerospace, and industrial clients
FAQs
What is the active area of the SG01XL-5?
It features a large 3.0 mm² active area.
What is its peak responsivity?
The photodiode provides 0.13 A/W at 280 nm.
What is the advantage of the extra-large area?
It improves photon capture efficiency, making it ideal for low-intensity UV monitoring and wide-beam detection.
What are typical applications?
Solar monitoring, ozone research, flame detection, sterilisation, UV curing, aerospace sensing, and photonics research.
How does United Spectrum support Indian customers?
By offering quick delivery, local inventory, expert guidance, and nationwide after-sales service.
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FAQs
What is the active area of the SG01XL-5?
It features a large 3.0 mm² active area.
What is its peak responsivity?
The photodiode provides 0.13 A/W at 280 nm.
What is the advantage of the extra-large area?
It improves photon capture efficiency, making it ideal for low-intensity UV monitoring and wide-beam detection.
What are typical applications?
Solar monitoring, ozone research, flame detection, sterilisation, UV curing, aerospace sensing, and photonics research.
How does United Spectrum support Indian customers?
By offering quick delivery, local inventory, expert guidance, and nationwide after-sales service.
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