UVB+UVC Photodiode – SG01D-BC18
The SG01D-BC18 is a Silicon Carbide (SiC)-based broadband UV photodiode engineered for reliable detection across the full ultraviolet spectrum (200–400 nm, covering UVA, UVB, and...
UVB+UVC Photodiode – SG01D-BC18
Broadband UV Photodiode with Medium-Large Active Area for Industrial, Environmental, Aerospace, Medical, and Research Applications
The SG01D-BC18 is a Silicon Carbide (SiC)-based broadband UV photodiode engineered for reliable detection across the full ultraviolet spectrum (200–400 nm, covering UVA, UVB, and UVC). With its 0.5 mm² active area, it offers enhanced sensitivity and stronger photocurrents compared to smaller detectors, while maintaining easy integration into laboratory and industrial systems. Its visible blindness ensures interference-free UV detection, completely rejecting visible and infrared wavelengths. Delivering peak responsivity of 0.12 A/W at 330 nm, ultra-low dark current (0.2 fA), and capacitance of 25 pF, the SG01D-BC18 provides stable, noise-free, and accurate UV measurements. It operates reliably in extreme environments, with a wide temperature range from −55 °C to +170 °C, ensuring long-term stability in demanding applications. Typical uses include UV curing, sterilisation monitoring, solar radiation studies, flame detection, aerospace sensing, and scientific photonics research. The SG01D-BC18 is a robust broadband UV detector for critical applications.
Understanding UVB+UVC Photodiode - SG01D-BC18
The SG01D-BC18 is a medium-large area broadband photodiode optimised for full-spectrum ultraviolet monitoring between 200–400 nm. Its 0.5 mm² active area enhances photon capture and delivers stronger photocurrent signals, making it suitable for applications that require higher sensitivity than compact detectors. Built on SiC technology, it ensures visible blindness and accurate UV-only detection. With ultra-low dark current (0.2 fA) and 25 pF capacitance, it offers clean, noise-free readings and fast response times. Operating across a broad temperature range (−55 °C to +170 °C), the SG01D-BC18 is highly reliable for use in industrial, aerospace, environmental, medical, and scientific research applications.
Technical Specifications
| Feature | Specification |
| Spectral Range (Broadband UV) | 200 … 400 nm |
| Peak Responsivity | 0.12 A/W (typical) |
| Visible Blindness | > 10¹⁰ |
| Active Area | 0.5 mm² |
| Dark Current (1 V reverse bias) | 0.2 fA |
| Capacitance | 25 pF |
| Short Circuit (10 mW/cm² at peak) | 2.4 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 |
| Maximum Reverse Voltage | 20 V |
Key Features and Advantages
Broadband UV Coverage
The SG01D-BC18 is sensitive across UVA, UVB, and UVC (200–400 nm), making it ideal for multipurpose ultraviolet monitoring.
Medium-Large Active Area for Enhanced Sensitivity
With a 0.5 mm² active area, the detector captures more photons, generating stronger photocurrents for higher sensitivity applications.
Visible Blindness for Accurate UV Measurement
It eliminates interference from visible and IR radiation, ensuring pure and reliable broadband UV detection.
Superior Signal-to-Noise Ratio
Its ultra-low dark current (0.2 fA) provides noise-free performance, ensuring stable signals even in low-intensity UV conditions.
Fast and Reliable Response
The 25 pF capacitance ensures quick response times, making it suitable for real-time UV monitoring and control systems.
Durability in Harsh Environments
Designed for long-term reliability, the device operates across −55 °C to +170 °C, withstanding aerospace, defence, and industrial conditions.
Stable Long-Term Operation
Built on SiC technology, it is resistant to UV degradation, reducing recalibration needs and ensuring dependable performance over time.
By combining broadband responsivity, higher sensitivity, and robust durability, the SG01D-BC18 is a reliable detector for mission-critical UV measurement applications.
Applications Across Industries
Industrial Applications
The SG01D-BC18 is ideal for UV curing, sterilisation systems, and disinfection process monitoring, ensuring accurate broadband UV intensity measurement.
Medical and Healthcare
It is used in phototherapy calibration, sterilisation validation, and UV dosimetry, supporting safe and precise UV exposure monitoring.
Environmental and Solar Monitoring
The photodiode is applied in solar UV index monitoring, atmospheric studies, and environmental radiation analysis.
Laboratory and Scientific Research
Its broadband sensitivity makes it suitable for material testing, photonics experiments, and semiconductor characterisation.
Aerospace and Defence
The SG01D-BC18 is effective in flame detection, arc sensing, and aerospace-grade UV monitoring under extreme conditions.
Workplace and Safety Monitoring
It can be integrated into systems for UV exposure monitoring in industrial settings, ensuring compliance with safety regulations.
By combining broad coverage, enhanced sensitivity, and rugged design, the SG01D-BC18 provides dependable broadband UV monitoring across sectors.
Why Choose United Spectrum Instruments?
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Exclusive distributor of SGLUX UV photodiodes in India
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Local stock ensures reduced delivery times and quick availability
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Competitive pricing for industrial, medical, aerospace, and academic clients
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Expert consultation for application-specific integration and system design
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Pan-India support including training, after-sales service, and technical assistance
FAQs
What is the spectral detection range of the SG01D-BC18?
It covers 200–400 nm, including UVA, UVB, and UVC.
What is the active area size?
It features a 0.5 mm² active area for stronger sensitivity.
Does it block visible and infrared light?
Yes, with visible blindness >10¹⁰, it ensures pure UV detection.
Can it withstand harsh environments?
Yes, it operates reliably from −55 °C to +170 °C.
How does United Spectrum support Indian users?
By offering fast delivery, competitive pricing, expert advice, and nationwide technical support.
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FAQs
What is the spectral detection range of the SG01D-BC18?
It covers 200–400 nm, including UVA, UVB, and UVC.
What is the active area size?
It features a 0.5 mm² active area for stronger sensitivity.
Does it block visible and infrared light?
Yes, with visible blindness >10¹⁰, it ensures pure UV detection.
Can it withstand harsh environments?
Yes, it operates reliably from −55 °C to +170 °C.
How does United Spectrum support Indian users?
By offering fast delivery, competitive pricing, expert advice, and nationwide technical support.
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