Optical Sensors & Detector – UV Photodiodes
Dual Chip UV+IR Photodiode -SG01-TANDEM-XL
Dual Chip UV + IR Photodiode for Combined Ultraviolet and Infrared Detection in Advanced Industrial Applications
The SG01-TANDEM-XL is a dual-chip photodiode designed for simultaneous detection of ultraviolet (UV) and infrared (IR) radiation, offering unmatched versatility for multi-wavelength monitoring. This device integrates two photodiodes within a single package: one Silicon Carbide (SiC)-based UV photodiode, which provides solar-blind UV detection across UVA, UVB, and UVC ranges, and a Silicon-based IR photodiode optimised for near-infrared radiation. With a large 100 mm² active area, the SG01-TANDEM-XL delivers high photocurrents and strong signal-to-noise ratios, making it suitable for scientific instrumentation, industrial safety, flame detection, and environmental monitoring. Its dual spectral responsivity eliminates the need for multiple separate sensors, reducing system complexity and cost. Designed with rugged construction and long-term stability, the SG01-TANDEM-XL operates reliably from −40 °C to +125 °C. This makes it a durable, multi-purpose detector, ideal for applications where UV and IR radiation must be monitored together in a single compact sensor.
Understanding Dual Chip UV+IR Photodiode -SG01-TANDEM-XL
The SG01-TANDEM-XL photodiode combines two independent chips—one for ultraviolet detection and another for infrared—into a single device, enabling efficient dual-band monitoring. The SiC UV photodiode covers 200–370 nm with complete visible blindness, ensuring precise UV detection, while the IR photodiode detects wavelengths in the near-infrared range up to 1100 nm. With its 100 mm² active area, it delivers strong photocurrents and reliable signal stability. The design supports applications requiring simultaneous UV and IR detection, such as flame detection (UV + hot body radiation), industrial safety sensors, and research instruments. Its rugged build ensures stable operation across extreme conditions.
Technical Specifications
| Feature | Specification |
| Sensor Type |
Dual Chip Photodiode (UV + IR)
|
| UV Detection Range |
200 – 370 nm (SiC solar-blind)
|
| IR Detection Range |
400 – 1100 nm (Si-based)
|
| Active Area | 100 mm² (combined) |
| Visible Blindness (UV channel) | > 10¹⁰ |
| Dark Current (typical) | < 1 pA |
| Capacitance |
~ 2000 pF (UV channel)
|
| Responsivity (UV peak) | 0.15 A/W at 280 nm |
| Responsivity (IR peak) | 0.6 A/W at 850 nm |
| Operating Temperature | −40 … +125 °C |
| Storage Temperature | −55 … +150 °C |
| Soldering Temperature (3 s) | 260 °C |
| Maximum Reverse Voltage | 20 V |
Key Features and Advantages
Dual-Band Detection (UV + IR)
The SG01-TANDEM-XL combines UV and IR sensitivity in one package, making it a powerful choice for multi-spectral detection. The UV photodiode monitors solar-blind UV (200–370 nm), while the IR photodiode covers the 400–1100 nm range.
Large Active Area
Its 100 mm² active area generates strong photocurrents, supporting both low-intensity and high-energy monitoring tasks.
Solar-Blind UV Sensitivity
The SiC UV photodiode achieves complete visible blindness, ensuring accurate UV-only detection without interference from visible light.
High IR Responsivity
The Si-based IR photodiode delivers excellent sensitivity in the NIR region, ideal for thermal, flame, and environmental detection.
System Integration Advantages
By combining UV and IR channels in one device, the SG01-TANDEM-XL reduces system complexity, component count, and cost for OEMs and integrators.
Noise-Free and Stable Performance
With ultra-low dark current and high responsivity, both channels provide clean, reliable signals suitable for precision monitoring.
Durability and Stability
Rugged materials ensure the sensor withstands harsh industrial conditions, maintaining calibration stability and accuracy over time.
The SG01-TANDEM-XL is a multi-purpose dual-band photodiode designed for advanced monitoring systems where UV and IR detection are required together.
Applications Across Industries
Flame Detection
The SG01-TANDEM-XL is ideal for flame detectors, where the UV channel detects combustion UV radiation and the IR channel confirms hot body radiation.
Industrial Safety Systems
It supports hazardous gas detection and process monitoring, ensuring safety compliance in power plants, refineries, and chemical facilities.
Environmental Monitoring
The dual-band capability makes it suitable for studying UV and IR radiation effects in environmental systems, such as atmospheric research.
Medical and Healthcare
Used in phototherapy equipment and diagnostic tools requiring dual spectral monitoring.
Aerospace and Defence
Its ruggedness and dual-channel design support aerospace radiation monitoring, missile plume detection, and defence safety applications.
Research and Development
Laboratories utilise the SG01-TANDEM-XL for plasma monitoring, optical spectroscopy, and photonics research requiring UV + IR analysis.
By offering combined UV and IR sensitivity in a single detector, the SG01-TANDEM-XL simplifies integration and enhances the performance of multi-wavelength monitoring systems.
Why Choose United Spectrum Instruments?
-
Official distributor of SGLUX advanced photodiodes in India
-
Local stock ensures faster delivery and shorter lead times
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Competitive pricing across research, industrial, and defence applications
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Expert consultation for integrating dual-band UV + IR detectors
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Nationwide after-sales support, technical training, and service assistance
FAQs
What makes the SG01-TANDEM-XL unique?
It integrates both a UV and IR photodiode in a single package for dual-band detection.
What is its UV detection range?
It covers 200–370 nm using a SiC solar-blind photodiode.
What is its IR detection range?
It covers 400–1100 nm with a silicon-based IR photodiode.
Can it operate in extreme environments?
Yes, it operates reliably from −40 °C to +125 °C.
How does United Spectrum support Indian customers?
Through local stock, expert consultation, quick delivery, and nationwide after-sales service.
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FAQs
What makes the SG01-TANDEM-XL unique?
It integrates both a UV and IR photodiode in a single package for dual-band detection.
What is its UV detection range?
It covers 200–370 nm using a SiC solar-blind photodiode.
What is its IR detection range?
It covers 400–1100 nm with a silicon-based IR photodiode.
Can it operate in extreme environments?
Yes, it operates reliably from −40 °C to +125 °C.
How does United Spectrum support Indian customers?
Through local stock, expert consultation, quick delivery, and nationwide after-sales service.
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