Broadband UV Photodiode – SG01D-5Lens
The SG01D-5Lens is a Silicon Carbide (SiC) broadband UV photodiode designed in a dual-lead package with an integrated optical lens, combining rugged stability with enhanced...
Broadband UV Photodiode – SG01D-5Lens
Dual-Lead UV Photodiode with Integrated Lens for Enhanced Sensitivity, Compact Design, and Reliable Performance
The SG01D-5Lens is a Silicon Carbide (SiC) broadband UV photodiode designed in a dual-lead package with an integrated optical lens, combining rugged stability with enhanced light collection efficiency. With a responsivity peak of 0.13 A/W at 280 nm and covering the responsivity range of 221–358 nm, it ensures precise UV detection with complete visible blindness. The integrated lens focuses incoming UV light onto the compact 0.03 mm² active area, increasing sensitivity while keeping the design compact and easy to integrate. Featuring ultra-low dark current of 0.1 fA and capacitance of 7 pF, it provides noise-free operation and fast response times, ensuring reliable signal-to-noise performance. Operating across −55 °C to +170 °C, the SG01D-5Lens is suitable for demanding environments such as aerospace, industrial safety, and environmental monitoring. Applications include flame detection, UV curing control, sterilisation monitoring, ozone studies, and photonics R&D, where enhanced responsivity is required in compact systems.
Understanding Broadband UV Photodiode - SG01D-5Lens
The SG01D-5Lens combines the robustness of a dual-lead package with the optical enhancement of an integrated lens, delivering improved UV detection sensitivity. Its Silicon Carbide design provides a responsivity peak of 0.13 A/W at 280 nm, ensuring accurate UV detection in the 221–358 nm range, while blocking visible and infrared light. The lens concentrates incoming UV radiation onto the 0.03 mm² active area, boosting responsivity without enlarging the diode. With an ultra-low dark current of 0.1 fA and capacitance of 7 pF, it ensures high signal-to-noise performance and fast response times. Built for −55 °C to +170 °C operation, it excels in rugged environments.
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 |
0.03 mm² (with lens enhancement)
|
| 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
Enhanced Light Collection with Integrated Lens
The SG01D-5Lens features a built-in optical lens that focuses UV light onto the active area, improving responsivity without increasing the device footprint. This makes it ideal for applications needing higher sensitivity in compact systems.
Selective UV Detection with SiC Technology
Using Silicon Carbide, the photodiode detects only ultraviolet radiation (221–358 nm) while completely rejecting visible and infrared light. This ensures reliable and selective UV-only detection.
Compact Active Area with Lens Enhancement
Although the active area is just 0.03 mm², the integrated lens optimises light capture, making it highly efficient even in low-intensity UV environments.
Low Noise and Fast Response
With ultra-low dark current of 0.1 fA and capacitance of 7 pF, the device ensures minimal noise and rapid response. This makes it suitable for real-time monitoring tasks such as flame detection and UV curing control.
Rugged Dual-Lead Design
The dual-lead package provides mechanical robustness and secure mounting, ensuring stability in harsh conditions where vibrations and long-term durability are critical.
Wide Thermal Stability
The SG01D-5Lens operates reliably between −55 °C and +170 °C, making it suitable for aerospace missions, industrial plants, and environmental monitoring setups.
Long-Term Performance
The photodiode resists UV degradation, ensuring consistent responsivity over prolonged use, reducing downtime, and enhancing device reliability.
Overall, the SG01D-5Lens offers enhanced sensitivity, compact integration, and rugged design, making it an ideal choice for applications requiring stable, precise, and reliable ultraviolet detection.
Applications Across Industries
Environmental Monitoring
The SG01D-5Lens is used in solar radiation monitoring, ozone layer studies, and climate research. Its enhanced responsivity ensures accurate UV measurements even under low-light conditions.
Industrial Flame Detection
Its lens-enhanced sensitivity allows rapid detection of UV flame signatures in energy plants, refineries, and factories, contributing to enhanced workplace safety.
Medical and Laboratory Applications
The photodiode supports sterilisation monitoring, UV dosimetry, and calibration of phototherapy equipment. Its enhanced responsivity ensures higher accuracy in medical and laboratory settings.
UV Curing in Manufacturing
In printing, adhesive bonding, and coatings, the SG01D-5Lens provides precise UV curing monitoring, ensuring consistent quality and improved process efficiency.
Photonics and Semiconductor R&D
Researchers use the device for testing UV-sensitive materials and developing photonic devices. Its compact size and enhanced responsivity support advanced laboratory innovation.
Aerospace and Defence
The dual-lead design combined with lens enhancement ensures reliable performance in aerospace UV monitoring, arc detection, and defence-grade sensing systems, even under harsh thermal and mechanical conditions.
By combining rugged dual-lead packaging with an integrated lens, the SG01D-5Lens sets itself apart as a versatile and dependable UV photodiode across industries.
Why Choose United Spectrum Instruments?
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Authorised distributor of SGLUX UV photodiodes in India
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Competitive pricing and fast local stock availability
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Expert consultation for research and industrial applications
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Nationwide after-sales service, training, and technical support
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Trusted by universities, defence labs, and leading industries
FAQs
How does the SG01D-5Lens differ from the SG01D-5?
It integrates an optical lens for higher responsivity and improved light collection.
What is the peak responsivity of the device?
It achieves 0.13 A/W at 280 nm.
Can it be used in extreme environments?
Yes, it operates reliably from −55 °C to +170 °C.
What are typical applications?
Flame detection, UV curing, solar monitoring, sterilisation validation, and aerospace sensing.
How does United Spectrum support this product in India?
United Spectrum provides fast delivery, local stock, expert advice, and nationwide after-sales service.
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FAQs
How does the SG01D-5Lens differ from the SG01D-5?
It integrates an optical lens for higher responsivity and improved light collection.
What is the peak responsivity of the device?
It achieves 0.13 A/W at 280 nm.
Can it be used in extreme environments?
Yes, it operates reliably from −55 °C to +170 °C.
What are typical applications?
Flame detection, UV curing, solar monitoring, sterilisation validation, and aerospace sensing.
How does United Spectrum support this product in India?
United Spectrum provides fast delivery, local stock, expert advice, and nationwide after-sales service.
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