UVA Photodiode – SG01S-A18UVA
The SG01S-A18UVA is a Silicon Carbide (SiC)-based photodiode optimised for selective UVA detection, ensuring highly precise and interference-free monitoring. With a peak responsivity at...
UVA Photodiode – SG01S-A18UVA
High-Precision UVA Photodiode for Reliable Industrial, Medical, Environmental, and Scientific Ultraviolet Monitoring Applications
The SG01S-A18UVA is a Silicon Carbide (SiC)-based photodiode optimised for selective UVA detection, ensuring highly precise and interference-free monitoring. With a peak responsivity at 330 nm and sensitivity tailored specifically to the UVA spectrum (315–400 nm), this detector provides reliable measurement in environments where UV-only response is critical. Its compact 0.5 mm² active area offers a balance between sensitivity and integration flexibility, making it suitable for portable devices, laboratory setups, and embedded industrial systems. Featuring ultra-low dark current and low capacitance, the SG01S-A18UVA ensures fast response times and excellent signal-to-noise ratios. The device is engineered to operate across wide temperature ranges (−55 °C to +170 °C), delivering consistent performance in demanding conditions. Applications include UVA curing control, sterilisation monitoring, medical diagnostics, UV intensity measurement, environmental monitoring, and photonics research. Designed for accuracy, durability, and stability, the SG01S-A18UVA is ideal for mission-critical UVA monitoring tasks.
Understanding UVA Photodiode - SG01S-A18UVA
The SG01S-A18UVA is a specialised SiC photodiode for UVA detection, engineered to measure within the 315–400 nm range with peak responsivity at 330 nm. Unlike broadband detectors, it offers tailored selectivity to UVA radiation, ensuring precise results in targeted applications such as curing processes, sterilisation monitoring, and UV intensity measurements. Its 0.5 mm² active area captures sufficient photons while maintaining compact integration. The ultra-low dark current ensures minimal noise, while low capacitance supports fast signal response. Built for durability, the SG01S-A18UVA functions reliably between −55 °C and +170 °C, making it a robust solution for industrial, scientific, and medical 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
Tailored UVA Responsivity
The SG01S-A18UVA is optimised for UVA radiation (315–400 nm) with a peak at 330 nm, ensuring precise UVA-only measurements without interference from UVB, UVC, visible, or IR light.
Silicon Carbide Technology
SiC construction ensures robust UV stability, resistance to degradation, and selective UV detection with complete suppression of unwanted wavelengths.
Compact Active Area with Balanced Sensitivity
The 0.5 mm² active area allows for higher signal output while still enabling easy integration into compact devices and embedded systems.
Low Noise and High Signal Clarity
With a dark current of only 0.2 fA, the device provides exceptional signal-to-noise ratios, making it ideal for sensitive UVA monitoring.
Fast Response Time
A capacitance of 25 pF allows rapid response, supporting real-time monitoring in UVA curing, sterilisation, and medical applications.
Wide Temperature Range
Operating reliably from −55 °C to +170 °C, the SG01S-A18UVA is suitable for aerospace, industrial, and outdoor conditions where thermal endurance is critical.
Durability and Longevity
Designed to resist UVA-induced degradation, it ensures long-term stability, reducing maintenance costs and providing reliable operation over years of service.
By combining UVA selectivity, durability, and rapid response, the SG01S-A18UVA is a dependable choice for applications requiring precise UVA measurement.
Applications Across Industries
Industrial UVA Curing Control
The SG01S-A18UVA is widely used in UVA curing systems for adhesives, coatings, and printing. Its fast response ensures precise monitoring of UVA intensity, improving quality and process reliability.
Medical and Healthcare Applications
In medical diagnostics and treatment, it supports phototherapy validation, UVA sterilisation, and dosimetry. Its tailored wavelength response ensures precise measurement in healthcare devices.
Environmental and Solar Monitoring
The photodiode is used in monitoring UVA levels in environmental research and solar radiation studies. Its high stability ensures reliable long-term field deployment.
Laboratory and Research Applications
Researchers employ the SG01S-A18UVA in photonics and material studies where UVA-specific response is critical, enabling accurate experimental outcomes.
Aerospace and Defence Applications
With rugged SiC construction and ISO-grade reliability, the photodiode is suited for aerospace UVA sensing, arc detection, and defence-related monitoring systems.
Consumer and Industrial Safety
It can be integrated into devices monitoring UVA exposure for workplace safety, skin protection, and industrial process validation.
By combining UVA-specific response, high sensitivity, and robust packaging, the SG01S-A18UVA provides a versatile solution across industrial, medical, environmental, and aerospace sectors.
Why Choose United Spectrum Instruments?
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Authorised distributor of SGLUX UVA photodiodes in India
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Quick delivery from local stock for reduced lead times
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Competitive pricing for industrial and academic customers
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Application-specific consultation for research, medical, and industrial uses
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Nationwide technical support, training, and after-sales service
FAQs
What is the peak responsivity of the SG01S-A18UVA?
It achieves 0.12 A/W at 330 nm.
What is its active area?
The device has a 0.5 mm² active area.
Which UV range does it cover?
It is optimised for UVA detection from 315–400 nm.
Can it be used for sterilisation monitoring?
Yes, it is suitable for UVA sterilisation and medical diagnostics.
How does United Spectrum support customers in India?
By offering local stock, expert guidance, and pan-India after-sales service.
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FAQs
What is the peak responsivity of the SG01S-A18UVA?
It achieves 0.12 A/W at 330 nm.
What is its active area?
The device has a 0.5 mm² active area.
Which UV range does it cover?
It is optimised for UVA detection from 315–400 nm.
Can it be used for sterilisation monitoring?
Yes, it is suitable for UVA sterilisation and medical diagnostics.
How does United Spectrum support customers in India?
By offering local stock, expert guidance, and pan-India after-sales service.
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