Broadband UV Photodiode – SG01Q-5
The SG01Q-5 is a Silicon Carbide (SiC) broadband UV photodiode designed with a quad-element configuration for enhanced sensitivity, balanced detection, and stable performance. With a...
Broadband UV Photodiode – SG01Q-5
Quad-Element UV Photodiode for High-Sensitivity, Balanced Detection in Industrial, Medical, and Scientific Applications
The SG01Q-5 is a Silicon Carbide (SiC) broadband UV photodiode designed with a quad-element configuration for enhanced sensitivity, balanced detection, and stable performance. With a responsivity peak of 0.13 A/W at 280 nm and a detection range of 221–358 nm, it delivers precise ultraviolet-only measurement while maintaining excellent visible blindness. The quad design allows optimised light capture and improved spatial uniformity, making it suitable for applications requiring stable, directional, or distributed UV detection. Featuring a 0.03 mm² active area per element, ultra-low dark current of 0.1 fA, and 7 pF capacitance, the SG01Q-5 ensures noise-free, fast-response operation. Operating reliably between −55 °C and +170 °C, it is engineered for extreme industrial, aerospace, and environmental conditions. Applications include solar UV monitoring, sterilisation validation, flame detection, UV curing, and photonics research. The SG01Q-5 provides precision, uniformity, and ruggedness for mission-critical ultraviolet sensing systems.
Understanding Broadband UV Photodiode - SG01Q-5
The SG01Q-5 is a quad-element UV photodiode that combines four Silicon Carbide detectors into a single compact package. Each element has a 0.03 mm² active area, collectively enhancing sensitivity and improving spatial coverage. With a responsivity of 0.13 A/W at 280 nm and detection coverage across 221–358 nm, it ensures accurate UV-only detection with strong visible blindness. The quad configuration is particularly useful in applications requiring uniform illumination sensing or directional UV detection. With ultra-low dark current (0.1 fA), capacitance of 7 pF, and wide operating range (−55 °C to +170 °C), the SG01Q-5 is built for reliable long-term performance.
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 (per element) | 0.03 mm² |
| Dark Current (1 V reverse bias) | 0.1 fA |
| Capacitance | 7 pF |
| Short Circuit (10 mW/cm² at peak) | 480 nA |
| 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
Quad-Element Configuration
The SG01Q-5 integrates four UV-sensitive elements into one package, providing enhanced light collection, improved spatial uniformity, and greater flexibility for directional or distributed UV detection.
SiC-Based UV Selectivity
Leveraging Silicon Carbide, the device responds only to UV wavelengths between 221–358 nm, with peak responsivity at 280 nm, while rejecting visible and infrared light.
Compact Active Area with High Precision
Each element has a 0.03 mm² active area, balancing compact size with accurate ultraviolet measurement. The quad design increases overall sensitivity compared to single-element diodes.
Low Noise, High Signal Quality
With ultra-low dark current (0.1 fA) and capacitance of 7 pF, the SG01Q-5 ensures noise-free operation, providing strong signal-to-noise ratios in both low and high UV intensities.
Fast Response for Real-Time Applications
The low capacitance supports rapid signal response, making it ideal for time-critical applications such as flame detection, UV curing, and monitoring transient UV events.
Rugged and Thermally Stable
Operating from −55 °C to +170 °C, the SG01Q-5 is highly reliable in extreme industrial and aerospace environments.
Long-Term Reliability
The quad-element photodiode resists UV degradation, maintaining stable responsivity over long-term operation, ensuring reduced downtime and cost savings.
By combining quad-element sensitivity, SiC technology, and rugged packaging, the SG01Q-5 ensures precision, reliability, and flexibility for a wide range of UV applications.
Applications Across Industries
Environmental and Climate Research
The SG01Q-5 is ideal for solar UV studies, ozone research, and atmospheric monitoring. Its quad-element design ensures accurate and uniform UV data collection.
Industrial Flame Detection
The fast response and high sensitivity make it suitable for flame detection in refineries, power plants, and industrial safety systems, where uniform coverage improves reliability.
Medical and Laboratory Applications
It supports sterilisation monitoring, UV dosimetry, and phototherapy calibration. The quad-element structure ensures precision in distributed or directional UV detection.
UV Curing and Manufacturing
The SG01Q-5 provides accurate monitoring in UV curing systems for adhesives, coatings, and printing. Its uniform detection enhances process control and quality assurance.
Photonics and Semiconductor Research
Its quad-element sensitivity is valuable for testing UV-sensitive materials, developing optical devices, and semiconductor process research requiring consistent UV monitoring.
Aerospace and Defence
With rugged construction and broad temperature tolerance, the SG01Q-5 supports aerospace UV sensing, arc detection, and defence-grade monitoring applications.
By combining quad-element detection, high sensitivity, and rugged stability, the SG01Q-5 offers reliable ultraviolet monitoring for diverse industrial, scientific, and aerospace applications.
Why Choose United Spectrum Instruments?
-
Official distributor of SGLUX UV photodiodes in India
-
Local stock ensures reduced lead times and faster delivery
-
Competitive pricing tailored for research and industrial clients
-
Expert consultation for integration into custom applications
-
Pan-India after-sales service, training, and technical support
FAQs
What is unique about the SG01Q-5?
It features a quad-element configuration for enhanced sensitivity and uniform UV detection.
What is the active area size?
Each element has 0.03 mm² active area, optimised for precision detection.
What is the peak responsivity?
The SG01Q-5 achieves 0.13 A/W at 280 nm.
Can it operate in harsh environments?
Yes, it functions reliably from −55 °C to +170 °C.
How does United Spectrum add value?
By providing local stock, expert consultation, fast delivery, and pan-India after-sales support.
GET IN TOUCH WITH US
Have a Project in Mind ? Let’s Talk
FAQs
What is unique about the SG01Q-5?
It features a quad-element configuration for enhanced sensitivity and uniform UV detection.
What is the active area size?
Each element has 0.03 mm² active area, optimised for precision detection.
What is the peak responsivity?
The SG01Q-5 achieves 0.13 A/W at 280 nm.
Can it operate in harsh environments?
Yes, it functions reliably from −55 °C to +170 °C.
How does United Spectrum add value?
By providing local stock, expert consultation, fast delivery, and pan-India after-sales support.
WHAT WE OFFER
Reliable Engineering Solutions for Modern Manufacturing
Imaging Cameras & Wavefront Sensors
Laser Sources
Dust & Fume Extractors
Industrial Laser Systems
Optical Communication Systems
Optical Sensors & Detectors
