UVA Photodiode – SG01D-A18UVA
The SG01D-A18UVA is a Silicon Carbide (SiC) UVA photodiode optimised for precise and selective detection of ultraviolet-A radiation between 315–400 nm. Featuring a...
UVA Photodiode – SG01D-A18UVA
High-Sensitivity UVA Photodiode with Enhanced Durability for Industrial, Environmental, Aerospace, and Medical Applications
The SG01D-A18UVA is a Silicon Carbide (SiC) UVA photodiode optimised for precise and selective detection of ultraviolet-A radiation between 315–400 nm. Featuring a responsivity peak of 0.12 A/W at 330 nm, it provides high accuracy and interference-free UVA-only measurements. With a 0.5 mm² active area, the SG01D-A18UVA balances sensitivity with integration flexibility for both compact and medium-scale systems. Designed with enhanced durability, it offers resistance to UV degradation and environmental stress, ensuring long-term stability in mission-critical applications. Its ultra-low dark current (0.2 fA) and capacitance (25 pF) guarantee clean signals and fast response times. Operating across a wide temperature range (−55 °C to +170 °C), it performs reliably in harsh conditions, including aerospace and defence environments. Applications include UVA curing process monitoring, sterilisation validation, solar radiation studies, photonics research, and medical diagnostics. The SG01D-A18UVA is a robust and stable photodiode for precision UVA monitoring.
Understanding UVA Photodiode - SG01D-A18UVA
The SG01D-A18UVA is a medium-area UVA photodiode designed with Silicon Carbide technology for high-precision ultraviolet detection. It selectively responds to UVA wavelengths from 315–400 nm, peaking at 330 nm, while blocking UVB, UVC, visible, and IR light. Its 0.5 mm² active area provides enhanced sensitivity compared to smaller detectors, making it suitable for applications requiring stronger photocurrents and stable monitoring. With ultra-low dark current (0.2 fA) and capacitance (25 pF), it ensures noise-free performance and rapid signal response. The SG01D-A18UVA is engineered for long-term durability, functioning across −55 °C to +170 °C, making it reliable in demanding industrial, aerospace, and research 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
UVA-Specific Responsivity
The SG01D-A18UVA is designed to cover 315–400 nm with peak sensitivity at 330 nm, ensuring UVA-only detection for industrial, medical, and scientific applications.
Medium Active Area for Stronger Signals
Its 0.5 mm² active area improves photon capture, producing stronger photocurrents compared to compact detectors while maintaining integration flexibility.
High Signal Quality
With an ultra-low dark current of 0.2 fA, it delivers noise-free signals for accurate and stable UVA monitoring.
Fast Response Capability
Capacitance of 25 pF supports rapid response, enabling the photodiode to function in real-time UVA curing, sterilisation, and safety monitoring systems.
Durability in Harsh Environments
Operating between −55 °C and +170 °C, the device ensures stability in extreme thermal and environmental conditions.
Rugged SiC Construction
Silicon Carbide material enhances UV resistance, preventing degradation and guaranteeing long-term reliability.
Application Flexibility
Its balance of area, sensitivity, and ruggedness makes it suitable for embedded, laboratory, industrial, and aerospace systems.
By combining UVA precision, durability, and strong signal output, the SG01D-A18UVA ensures reliable UVA detection in mission-critical environments.
Applications Across Industries
Industrial UVA Curing Systems
The SG01D-A18UVA provides accurate UVA monitoring in curing systems for coatings, adhesives, and inks, ensuring process efficiency and product quality.
Medical and Healthcare
It is used in sterilisation validation, phototherapy calibration, and UVA dosimetry, ensuring accurate medical UVA exposure measurements.
Environmental and Solar Radiation Monitoring
The photodiode supports long-term monitoring of UVA radiation in climate studies, atmospheric science, and solar UV index measurements.
Laboratory and Research Applications
Researchers benefit from its selective UVA response for material testing, photonics research, and precise radiation studies.
Aerospace and Defence
Its rugged design and wide thermal range make it effective in aerospace systems, arc detection, and defence-grade UVA monitoring applications.
Workplace and Consumer Safety
The SG01D-A18UVA is suitable for UVA exposure monitors in industrial and workplace safety applications, ensuring compliance with UV safety standards.
By combining durability, UVA selectivity, and strong sensitivity, the SG01D-A18UVA is a reliable choice for industry, science, and defence sectors.
Why Choose United Spectrum Instruments?
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Authorised distributor of SGLUX UVA photodiodes in India
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Reliable local stock ensures faster delivery times
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Competitive pricing for industrial, medical, and research sectors
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Expert consultation for integration into custom applications
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Nationwide after-sales service, training, and technical support
FAQs
What is the responsivity peak of the SG01D-A18UVA?
It achieves 0.12 A/W at 330 nm.
What is the active area size?
It features a 0.5 mm² active area for stronger signal capture.
What is its UVA detection range?
It is optimised for UVA detection from 315–400 nm.
Can it operate in extreme environments?
Yes, it works reliably from −55 °C to +170 °C.
How does United Spectrum support Indian customers?
By offering expert consultation, fast delivery, and nationwide technical service.
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FAQs
What is the responsivity peak of the SG01D-A18UVA?
It achieves 0.12 A/W at 330 nm.
What is the active area size?
It features a 0.5 mm² active area for stronger signal capture.
What is its UVA detection range?
It is optimised for UVA detection from 315–400 nm.
Can it operate in extreme environments?
Yes, it works reliably from −55 °C to +170 °C.
How does United Spectrum support Indian customers?
By offering expert consultation, fast delivery, and nationwide technical service.
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