Broadband UV Photodiode – SG01D-18
The SG01D-18 is a Silicon Carbide (SiC) broadband UV photodiode designed with a dual-lead package for robust mounting and stable integration in industrial and scientific...
Broadband UV Photodiode – SG01D-18
Durable Dual-Lead UV Detector with High Stability, Precision Responsivity, and Long-Term Reliability for Industrial Applications
The SG01D-18 is a Silicon Carbide (SiC) broadband UV photodiode designed with a dual-lead package for robust mounting and stable integration in industrial and scientific systems. With a responsivity peak of 0.160 A/W at 280 nm and a detection range between 221–358 nm, it ensures precise ultraviolet measurement while completely rejecting visible and infrared light. Featuring a compact 0.06 mm² active area, ultra-low dark current of 0.2 fA, and capacitance of 15 pF, the SG01D-18 delivers low-noise, high signal-to-noise ratios, and dependable fast response. Its wide operating temperature range from −55 °C to +170 °C ensures reliable performance even in harsh conditions. The rugged dual-lead design enhances mechanical stability, making it ideal for continuous operation. Applications include flame detection, UV curing, solar monitoring, ozone studies, aerospace sensing, medical sterilisation validation, and photonics research. The SG01D-18 combines robust design, stability, and sensitivity for mission-critical ultraviolet detection.
Understanding Broadband UV Photodiode - SG01D-18
The SG01D-18 is a dual-lead Silicon Carbide UV photodiode that offers precise ultraviolet detection with excellent visible blindness. With a peak responsivity of 0.160 A/W at 280 nm and a responsivity range of 221–358 nm, it ensures reliable measurement across key UV wavelengths. Its 0.06 mm² active area balances compactness with sensitivity, while its ultra-low dark current of 0.2 fA reduces noise for high-quality results. The 15 pF capacitance supports fast response times, critical for real-time monitoring. With a rugged dual-lead design and a wide operating range (−55 °C to +170 °C), the SG01D-18 is engineered for long-term reliability.
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 |
Key Features and Advantages
Silicon Carbide Technology for UV Selectivity
The SG01D-18 uses SiC material, providing high UV sensitivity with natural rejection of visible and infrared light. This ensures pure ultraviolet signal detection without interference.
High Sensitivity and Noise-Free Performance
The photodiode achieves 0.160 A/W responsivity at 280 nm. With its ultra-low dark current of 0.2 fA, it ensures excellent signal-to-noise ratios, delivering stable performance even under weak UV sources.
Dual-Lead Package Stability
The rugged dual-lead package enhances mounting stability and reduces mechanical stress. This ensures consistent performance in long-term industrial and outdoor monitoring setups.
Compact Active Area
The 0.06 mm² active area allows for integration flexibility while maintaining strong sensitivity, making it suitable for compact instruments as well as large-scale monitoring devices.
Fast Response with Low Capacitance
With a capacitance of 15 pF, the SG01D-18 provides fast response times, crucial for real-time UV applications such as flame detection and UV curing.
Wide Temperature and Environmental Range
Operating reliably between −55 °C and +170 °C, the photodiode is designed for extreme industrial and aerospace conditions.
Reliable Long-Term Stability
The SG01D-18 resists UV degradation, providing stable responsivity over years of continuous exposure. This makes it an ideal choice for mission-critical tasks requiring dependable long-term performance.
Applications Across Industries
Environmental Monitoring
The SG01D-18 is ideal for solar UV radiation monitoring, ozone research, and atmospheric analysis. Its visible blindness ensures accurate, interference-free UV measurement for climate and environmental science.
Industrial Flame Detection
Used in petrochemical facilities, energy plants, and manufacturing industries, the photodiode offers rapid UV flame detection. Its fast response improves safety, reducing risks in critical systems.
Medical and Laboratory Applications
It is widely used in UV dosimetry, sterilisation validation, and calibration of phototherapy devices. Its accuracy supports compliance with strict healthcare and laboratory standards.
UV Curing and Industrial Processes
In UV curing applications such as printing, coatings, and adhesives, the SG01D-18 enables precise process monitoring. It ensures consistent curing quality, reduced defects, and higher efficiency.
Photonics and Semiconductor Research
The SG01D-18 supports laboratory R&D on UV-sensitive materials and photonic devices. Its stability and compact design facilitate integration into advanced research equipment.
Aerospace and Defence
The rugged dual-lead design and broad temperature tolerance make the device suitable for aerospace UV monitoring, arc detection, and defence-grade sensing applications.
By covering diverse industries, the SG01D-18 proves to be a versatile, stable, and durable UV photodiode for industrial and research use.
Why Choose United Spectrum Instruments?
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Authorised distributor of SGLUX UV photodiodes in India
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Local inventory ensures quick delivery and reduced lead times
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Competitive pricing tailored for academic and industrial sectors
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Application-specific consultation with expert technical guidance
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Comprehensive pan-India service, training, and after-sales support
FAQs
What is the responsivity peak of the SG01D-18?
It peaks at 0.160 A/W at 280 nm.
How does the dual-lead package help?
It improves mounting stability and ensures durability in long-term installations.
Can it be used in extreme environments?
Yes, it operates between −55 °C and +170 °C.
What are the common applications?
Flame detection, UV curing, solar monitoring, ozone studies, medical sterilisation, and aerospace sensing.
How does United Spectrum support Indian customers?
With fast delivery, local stock, expert consultation, and complete after-sales service.
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FAQs
What is the responsivity peak of the SG01D-18?
It peaks at 0.160 A/W at 280 nm.
How does the dual-lead package help?
It improves mounting stability and ensures durability in long-term installations.
Can it be used in extreme environments?
Yes, it operates between −55 °C and +170 °C.
What are the common applications?
Flame detection, UV curing, solar monitoring, ozone studies, medical sterilisation, and aerospace sensing.
How does United Spectrum support Indian customers?
With fast delivery, local stock, expert consultation, and complete after-sales service.
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