Broadband UV Photodiode – SG01D-18D
The SG01D-18D is a Silicon Carbide (SiC) broadband UV photodiode designed with a dual-lead package, engineered for precision ultraviolet detection and enhanced durability. With a...
Broadband UV Photodiode – SG01D-18D
Dual-Lead UV Photodiode with Enhanced Durability, High Responsivity, and Long-Term Stability for Demanding Applications
The SG01D-18D is a Silicon Carbide (SiC) broadband UV photodiode designed with a dual-lead package, engineered for precision ultraviolet detection and enhanced durability. With a responsivity peak of 0.160 A/W at 280 nm and a broad detection range from 221–358 nm, it provides highly accurate UV measurements while ensuring complete visible blindness. The device features a compact 0.06 mm² active area, ultra-low dark current of 0.2 fA, and capacitance of 15 pF, resulting in noise-free performance, high signal-to-noise ratios, and fast response times. Its rugged dual-lead package offers extra mechanical stability, making it ideal for environments where robust mounting is required. Designed to operate across extreme conditions (−55 °C to +170 °C), the SG01D-18D is well suited for flame detection, UV curing control, sterilisation validation, ozone monitoring, photonics research, and aerospace UV sensing. The SG01D-18D delivers dependable, long-term performance in mission-critical industrial and scientific applications.
Understanding Broadband UV Photodiode - SG01D-18D
The SG01D-18D is a dual-lead UV photodiode built with Silicon Carbide for precise ultraviolet detection. Featuring a peak responsivity of 0.160 A/W at 280 nm and spanning the 221–358 nm range, it guarantees pure UV-only detection with excellent visible blindness. Its compact 0.06 mm² active area ensures easy integration, while the ultra-low dark current of 0.2 fA minimises noise, and 15 pF capacitance provides fast response. The reinforced dual-lead package offers improved mounting durability, making it ideal for long-term installations. With thermal endurance from −55 °C to +170 °C, the SG01D-18D ensures reliable performance in industrial, aerospace, and medical systems.
Technical Specifications
| Feature | Specification |
| Typical Responsivity at Peak Wavelength | 0.160 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 | 0.06 mm² |
| Dark Current (1 V reverse bias) | 0.2 fA |
| Capacitance | 15 pF |
| Short Circuit (10 mW/cm² at peak) | 960 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
Silicon Carbide UV Detection
The SG01D-18D leverages wide-bandgap SiC technology to provide broadband UV responsivity while blocking visible and infrared light. This ensures clean ultraviolet detection with no interference from ambient lighting.
High Responsivity with Stability
The device achieves a peak responsivity of 0.160 A/W at 280 nm, delivering accurate UV intensity measurements. With ultra-low dark current (0.2 fA), it offers strong signal-to-noise ratios, even under weak UV radiation.
Reinforced Dual-Lead Design
The “D” package variant strengthens the standard dual-lead design, offering enhanced stability in applications requiring secure mounting, vibration resistance, and long-term structural reliability.
Compact Active Area with High Precision
The 0.06 mm² active area balances integration flexibility with accurate sensing, making it suitable for both portable and large-scale monitoring devices.
Low Capacitance and Fast Response
With 15 pF capacitance, the SG01D-18D provides quick response times, which are crucial in real-time applications such as flame detection, UV curing, and process automation.
Temperature and Environmental Endurance
Capable of operating from −55 °C to +170 °C, it is resilient in extreme environments, from aerospace missions to industrial plants.
Long-Term Reliability
The SG01D-18D resists UV degradation, ensuring stable responsivity across long-term continuous use, minimising downtime and replacement costs.
By combining SiC technology, high responsivity, and a reinforced dual-lead design, the SG01D-18D ensures durability, accuracy, and trustworthiness in industrial, research, and aerospace UV applications.
Applications Across Industries
Environmental Monitoring
The SG01D-18D is widely used in ozone detection, solar UV monitoring, and atmospheric research. Its visible blindness ensures accurate readings without interference, making it invaluable in climate and environmental science.
Industrial Flame Detection
Its fast response and rugged dual-lead design make it highly effective in flame monitoring for refineries, energy plants, and manufacturing facilities. Its reliability helps improve safety systems and hazard prevention.
Medical and Laboratory Applications
The device supports UV dosimetry, sterilisation monitoring, and calibration of phototherapy equipment. Its precision and long-term stability ensure compliance with stringent medical and research requirements.
UV Curing in Manufacturing
In printing, adhesive bonding, and coatings, the SG01D-18D is used to monitor UV curing processes, ensuring consistency, higher product quality, and operational efficiency.
Photonics and Semiconductor R&D
Laboratories and research institutions benefit from its stable and selective UV detection when characterising UV-sensitive materials and developing photonic devices.
Aerospace and Defence
The rugged dual-lead package ensures stability under vibration, temperature extremes, and harsh conditions, making it suitable for aerospace UV sensing, arc detection, and defence systems.
With its combination of precision, robustness, and thermal resilience, the SG01D-18D proves itself as a versatile and reliable UV detector across industries.
Why Choose United Spectrum Instruments?
-
Official distributor of SGLUX UV photodiodes in India
-
Competitive pricing with reliable local stock for faster delivery
-
Expert technical consultation for seamless integration into projects
-
Nationwide after-sales support, training, and servicing
-
Trusted supplier for universities, defence organisations, and industrial R&D facilities
FAQs
What is the responsivity of the SG01D-18D?
It has a peak responsivity of 0.160 A/W at 280 nm.
How does the “D” package differ?
It offers a reinforced dual-lead design, improving mechanical stability and mounting durability.
What is the active area size?
0.06 mm², balancing compactness with sensitivity.
Can it handle extreme conditions?
Yes, it operates reliably from −55 °C to +170 °C.
How does United Spectrum add value?
By offering fast delivery, expert consultation, and nationwide after-sales service in India.
GET IN TOUCH WITH US
Have a Project in Mind ? Let’s Talk
FAQs
What is the responsivity of the SG01D-18D?
It has a peak responsivity of 0.160 A/W at 280 nm.
How does the “D” package differ?
It offers a reinforced dual-lead design, improving mechanical stability and mounting durability.
What is the active area size?
0.06 mm², balancing compactness with sensitivity.
Can it handle extreme conditions?
Yes, it operates reliably from −55 °C to +170 °C.
How does United Spectrum add value?
By offering fast delivery, expert consultation, and nationwide after-sales service in India.
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
