Broadband UV Photodiode – SG01L-18ISO90
The SG01L-18ISO90 is a Silicon Carbide (SiC) broadband UV photodiode featuring a large 1 mm² active area and ISO90 encapsulation for enhanced durability and stability...
Broadband UV Photodiode – SG01L-18ISO90
Large-Area UV Photodiode with ISO90 Encapsulation for High Sensitivity, Rugged Stability, and Long-Term Reliability
The SG01L-18ISO90 is a Silicon Carbide (SiC) broadband UV photodiode featuring a large 1 mm² active area and ISO90 encapsulation for enhanced durability and stability in demanding environments. With a responsivity peak of 0.160 A/W at 280 nm and a spectral range of 221–358 nm, it provides accurate UV-only detection while maintaining excellent visible blindness. The enlarged active area ensures higher photon capture, making it ideal for applications requiring increased sensitivity, such as low-intensity UV monitoring and wide-beam measurements. Its ultra-low dark current of 0.2 fA and capacitance of 120 pF deliver stable performance with dependable signal-to-noise ratios. ISO90 encapsulation adds resistance against environmental stress, moisture, and contaminants, ensuring consistent responsivity over long-term operation. With a wide temperature range of −55 °C to +170 °C, the SG01L-18ISO90 is suited for solar and ozone monitoring, sterilisation validation, aerospace UV sensing, industrial safety, and photonics R&D.
Understanding Broadband UV Photodiode - SG01L-18ISO90
The SG01L-18ISO90 combines a large-area UV detection design with ISO90 encapsulation for robust, long-term performance. Its 1 mm² active area increases sensitivity, while a peak responsivity of 0.160 A/W at 280 nm ensures precise UV detection across 221–358 nm. Built with Silicon Carbide, it provides strong UV selectivity with excellent visible blindness. The ISO90 encapsulation enhances environmental resistance, protecting against contamination, dust, and mechanical stress, making it ideal for outdoor and industrial environments. With ultra-low dark current, low-noise operation, and reliable performance between −55 °C to +170 °C, the SG01L-18ISO90 is a dependable UV detector for mission-critical industrial and research applications.
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 | 1.00 mm² |
| Dark Current (1 V reverse bias) | 0.2 fA |
| Capacitance | 120 pF |
| Short Circuit (10 mW/cm² at peak) | 16 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
Large Active Area for Enhanced Sensitivity
With its 1 mm² active area, the SG01L-18ISO90 is designed for high photon capture, producing stronger photocurrent output and enabling detection of low-intensity UV signals.
ISO90 Encapsulation for Ruggedness
The ISO90 encapsulation provides additional environmental protection, guarding against dust, moisture, and physical stress. This makes it reliable in outdoor, aerospace, and industrial installations.
SiC-Based UV Selectivity
Leveraging Silicon Carbide technology, the device detects ultraviolet wavelengths between 221–358 nm with peak responsivity at 280 nm, while ensuring complete rejection of visible and infrared light.
High Responsivity with Low Noise
Delivering 0.160 A/W at 280 nm with ultra-low dark current of 0.2 fA, the device ensures low-noise operation and strong signal-to-noise ratios.
Stable Operation with Large Capacitance
The capacitance of 120 pF supports stable and reliable measurements in large-area designs, ensuring balanced performance in high-sensitivity applications.
Thermal and Environmental Resilience
Operating across −55 °C to +170 °C, the SG01L-18ISO90 performs consistently in extreme industrial and aerospace environments.
Long-Term Reliability
UV degradation resistance ensures stable responsivity across years of continuous operation, reducing downtime and maintenance costs.
In essence, the SG01L-18ISO90 combines large-area detection, enhanced environmental protection, and strong UV selectivity, making it a trusted choice for mission-critical UV applications.
Applications Across Industries
Environmental and Climate Research
The SG01L-18ISO90 supports solar UV monitoring, ozone layer analysis, and atmospheric research. Its ISO90 encapsulation ensures stable and interference-free data collection outdoors.
Industrial Flame Detection
Its sensitivity and rugged dual-lead design make it reliable for flame detection in refineries, power stations, and industrial facilities.
Medical and Laboratory Applications
The device supports sterilisation monitoring, UV dosimetry, and calibration of phototherapy systems. ISO90 encapsulation adds durability in sterile and controlled environments.
UV Curing and Manufacturing
In printing, adhesives, and coatings, the SG01L-18ISO90 ensures accurate monitoring of UV curing systems, improving repeatability and product quality.
Photonics and Semiconductor Research
Its large-area sensitivity supports advanced R&D, such as testing UV-sensitive semiconductors, developing photonic devices, and next-generation optical sensor innovation.
Aerospace and Defence
With ISO90 encapsulation and wide thermal stability, the SG01L-18ISO90 is ideal for aerospace UV sensing, arc detection, and defence-grade monitoring systems operating in harsh conditions.
By combining large active area, ISO90 encapsulation, and robust packaging, the SG01L-18ISO90 provides unmatched reliability for diverse UV sensing industries.
Why Choose United Spectrum Instruments?
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Exclusive distributor of SGLUX UV photodiodes in India
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Competitive pricing with fast local stock availability
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Application-specific consultation for industrial and scientific projects
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Comprehensive pan-India training, technical support, and after-sales service
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Trusted by universities, defence organisations, and industrial R&D facilities
FAQs
What is the main advantage of ISO90 encapsulation?
It enhances durability and resistance to environmental stress, contamination, and long-term wear.
What is the active area of the SG01L-18ISO90?
It features a large 1 mm² active area for stronger signal output.
Can it be used in extreme conditions?
Yes, it operates reliably between −55 °C and +170 °C.
What are typical applications?
Solar UV monitoring, ozone research, flame detection, sterilisation control, UV curing, and aerospace UV sensing.
How does United Spectrum support Indian customers?
By providing quick delivery, local stock, expert guidance, and complete after-sales service across India.
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FAQs
What is the main advantage of ISO90 encapsulation?
It enhances durability and resistance to environmental stress, contamination, and long-term wear.
What is the active area of the SG01L-18ISO90?
It features a large 1 mm² active area for stronger signal output.
Can it be used in extreme conditions?
Yes, it operates reliably between −55 °C and +170 °C.
What are typical applications?
Solar UV monitoring, ozone research, flame detection, sterilisation control, UV curing, and aerospace UV sensing.
How does United Spectrum support Indian customers?
By providing quick delivery, local stock, expert guidance, and complete after-sales service across India.


