UVA Photodiode – SG01M-A18UVA
The SG01M-A18UVA is a Silicon Carbide (SiC) photodiode engineered for selective UVA detection across 315–400 nm, delivering reliable, interference-free performance. With a responsivity peak of...
UVA Photodiode – SG01M-A18UVA
Medium-Area UVA Photodiode for High-Accuracy Industrial, Environmental, Medical, and Scientific Ultraviolet Monitoring Applications
The SG01M-A18UVA is a Silicon Carbide (SiC) photodiode engineered for selective UVA detection across 315–400 nm, delivering reliable, interference-free performance. With a responsivity peak of 0.12 A/W at 330 nm, it ensures high-accuracy UVA-only monitoring, unaffected by visible or infrared radiation. The device features a medium-sized 0.5 mm² active area, balancing strong photon capture with ease of integration into industrial, laboratory, and portable systems. Its ultra-low dark current of 0.2 fA and capacitance of 25 pF guarantee noise-free operation and rapid response, even under varying UVA intensities. Designed to withstand wide operating temperatures (−55 °C to +170 °C), the SG01M-A18UVA provides consistent performance in extreme industrial, medical, and aerospace environments. Applications include UVA curing control, sterilisation monitoring, solar radiation measurement, medical diagnostics, and photonics research. By combining medium-area design, UVA selectivity, and rugged stability, it is an excellent solution for precision ultraviolet sensing.
Understanding UVA Photodiode - SG01M-A18UVA
The SG01M-A18UVA is a medium-area photodiode designed for targeted UVA detection, offering a dedicated responsivity range of 315–400 nm with peak sensitivity at 330 nm. Unlike broadband UV detectors, it ensures application-specific selectivity to UVA, making it suitable for medical diagnostics, sterilisation monitoring, curing process control, and UVA safety systems. The 0.5 mm² active area provides strong signal output while maintaining compact integration flexibility. With ultra-low dark current (0.2 fA) and capacitance (25 pF), it ensures noise-free, high-speed performance. Operating reliably between −55 °C and +170 °C, the SG01M-A18UVA offers long-term durability in industrial, aerospace, and scientific environments.
Technical Specifications
| Feature | Specification |
| Typical Responsivity at Peak Wavelength | 0.12 A/W |
| Wavelength of Max. Responsivity | 330 nm |
| Responsivity Range (UVA Specific) | 315 … 400 nm |
| Visible Blindness | > 10¹⁰ |
| Active Area | 0.5 mm² |
| Dark Current (1 V reverse bias) | 0.2 fA |
| Capacitance | 25 pF |
| Short Circuit (10 mW/cm² at peak) | 2.4 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
Medium Active Area for Balanced Sensitivity
With a 0.5 mm² active area, the SG01M-A18UVA provides enhanced photon capture compared to compact devices, offering stronger signals while maintaining integration flexibility.
UVA-Specific Selectivity
It is optimised for UVA detection between 315–400 nm, with peak sensitivity at 330 nm, ensuring application-specific precision without interference from UVB, UVC, or visible light.
High Signal-to-Noise Ratio
Its ultra-low dark current of 0.2 fA minimises noise, providing clean signals for accurate and stable UVA measurements.
Rapid Response Times
The 25 pF capacitance allows fast response speeds, supporting real-time monitoring in UVA curing, sterilisation validation, and safety systems.
Durability in Harsh Environments
With a wide operational range from −55 °C to +170 °C, the SG01M-A18UVA is designed for reliable performance in industrial, aerospace, and defence-grade applications.
Long-Term Stability
Its SiC-based design provides strong resistance to UVA degradation, enabling long service life with minimal recalibration or maintenance.
Integration Flexibility
Balancing active area and package size, the SG01M-A18UVA is well suited for embedded, portable, and laboratory systems.
By combining UVA-specific sensitivity, medium active area, and rugged performance, the SG01M-A18UVA delivers accurate and dependable ultraviolet monitoring for critical industrial and research environments.
Applications Across Industries
Industrial UVA Curing
The SG01M-A18UVA supports UVA curing applications in adhesives, coatings, and inks, ensuring process consistency and efficiency through precise UVA intensity monitoring.
Medical and Healthcare Applications
It is suitable for UVA sterilisation monitoring, medical device calibration, and phototherapy dosimetry, providing reliable results in healthcare systems.
Environmental and Solar Radiation Monitoring
The photodiode measures UVA levels in environmental research, atmospheric monitoring, and solar radiation studies, offering accurate long-term data collection.
Laboratory and Research Applications
Researchers utilise the SG01M-A18UVA in photonics and material science experiments requiring selective UVA detection and high measurement stability.
Aerospace and Defence
Its rugged construction and wide temperature range make it suitable for aerospace UV detection, arc monitoring, and defence-grade UVA sensing systems.
Consumer and Workplace Safety
The SG01M-A18UVA can be integrated into UVA exposure monitoring devices for industrial workplaces, ensuring compliance with occupational safety standards.
By combining accuracy, reliability, and long-term UVA stability, the SG01M-A18UVA provides a trusted solution across diverse industries.
Why Choose United Spectrum Instruments?
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Official distributor of SGLUX UVA photodiodes in India
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Reliable local stock ensures faster delivery and reduced lead times
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Competitive pricing tailored for industrial, academic, and defence customers
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Expert consultation for integration into application-specific systems
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Nationwide after-sales service, training, and technical support
FAQs
What is the responsivity peak of the SG01M-A18UVA?
It achieves 0.12 A/W at 330 nm.
What is the active area size?
It has a medium 0.5 mm² active area.
What is its detection range?
It is optimised for UVA detection from 315–400 nm.
Can it be used in harsh environments?
Yes, it performs reliably between −55 °C and +170 °C.
How does United Spectrum add value?
By offering local stock, expert advice, fast delivery, and nationwide after-sales service.
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FAQs
What is the responsivity peak of the SG01M-A18UVA?
It achieves 0.12 A/W at 330 nm.
What is the active area size?
It has a medium 0.5 mm² active area.
What is its detection range?
It is optimised for UVA detection from 315–400 nm.
Can it be used in harsh environments?
Yes, it performs reliably between −55 °C and +170 °C.
How does United Spectrum add value?
By offering local stock, expert advice, fast delivery, and nationwide after-sales service.
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