LED THT EOLD-340-012
High Precision UV Source for Analytical and Biomedical Systems – 340nm UV LED EOLD-340-012
The EOLD-325-012 is a high-performance 325 nm UV LED engineered for analytical, biomedical, and industrial sensing applications. Developed by EPIGAP OSA Photonics, this ultraviolet emitter delivers stable and reliable optical performance for demanding scientific and industrial environments. Housed in a rugged TO-46 metal package with an integrated lens, the LED provides excellent durability, thermal stability, and long operational life. Operating near the UV-A and UV-B boundary region, it offers controlled ultraviolet illumination suitable for applications requiring accurate and consistent UV output. United Spectrum Instruments is the authorised distributor of EPIGAP OSA Photonics products in India.
Designed for precision-based optical applications, the EOLD-325-012 is widely used in fluorescence analysis, material inspection, biomedical research, and laboratory instrumentation. Its focused beam profile enables accurate ultraviolet illumination, improving detection sensitivity and enhancing measurement reliability in analytical and inspection systems. The integrated lens design ensures efficient light concentration, making it suitable for compact optical assemblies and specialised research equipment. Its stable UV output supports dependable operation in applications where precise and repeatable ultraviolet radiation is essential for testing, analysis, and quality control.
Understanding LED THT EOLD-340-012
The EOLD-340-012 operates at a peak wavelength of 340 nm, enabling strong interaction with fluorescent materials and organic compounds. It delivers approximately 1.3 mW optical output at a typical operating current of 20 mA, ensuring stable and efficient performance.
The LED features a narrow beam angle (~6°) due to its lens-based TO-46 design, allowing precise and focused UV illumination.
Its hermetic metal package ensures excellent thermal stability and environmental protection, making it suitable for continuous operation in industrial and scientific environments.
Technical Specifications
| Parameter | Specification |
| Product | EOLD-340-012 |
| Type | UV LED (UV-A) |
| Peak Wavelength | 340 nm |
| Optical Output Power | ~1.3 mW |
| Forward Current | ~20 mA |
| Forward Voltage | ~4 V |
| Spectral Width (FWHM) | ~11 nm |
| Viewing Angle | ~6° |
| Package | TO-46 Metal Can (Lens) |
| Mounting Type | Through-hole |
| Operating Temperature | -40°C to +85°C |
| Compliance | RoHS compliant |
Key Features and Advantages
UV-A Wavelength for Fluorescence & Detection
Operating at 340 nm, the LED is ideal for exciting fluorescent materials, making it highly suitable for analytical, biomedical, and forensic applications.
Focused Beam for High-Precision Illumination
With a ~6° viewing angle, the integrated lens delivers highly directional UV radiation, ensuring accurate targeting in sensing and inspection systems.
Stable Optical Output for Reliable Performance
Delivering approximately 1.3 mW output, the LED ensures consistent and repeatable UV performance, essential for laboratory and industrial applications.
Robust TO-46 Hermetic Package
The metal package provides excellent mechanical strength, thermal stability, and environmental protection, ensuring reliable operation in harsh conditions.
Efficient Thermal Management
TO-can packaging enables effective heat dissipation, allowing stable performance even during continuous operation.
Low Power Consumption
Operating at 20 mA typical current, the LED provides energy-efficient performance while maintaining stable UV emission.
Industrial-Grade Reliability
Designed for demanding environments, the LED offers long operational life and consistent output, reducing maintenance and downtime.
Easy Integration into Systems
The through-hole configuration allows seamless integration into PCBs and optical assemblies, supporting both prototyping and large-scale production.
Applications Across Industries
Fluorescence & Chemical Analysis
The 340 nm wavelength is widely used for fluorescence excitation, enabling accurate detection and analysis of biological and chemical substances.
Biomedical & Life Science Applications
Used in diagnostic systems, biochemical assays, and laboratory research requiring stable and precise UV illumination.
Forensics & Security Applications
Ideal for forensic investigations, counterfeit detection, and document authentication using UV-based techniques.
Industrial Inspection & Material Testing
UV illumination helps identify surface defects, contamination, and material inconsistencies during quality control processes.
Environmental Monitoring Systems
Supports UV-based sensing systems for detecting pollutants and analysing environmental conditions.
UV Curing & Photopolymer Applications
Suitable for UV curing processes such as bonding, coating, and printing in industrial environments.
Research & Scientific Applications
Widely used in spectroscopy, photochemistry, and experimental setups requiring stable and focused UV light sources.
Why Choose United Spectrum Instruments?
United Spectrum Instruments is a trusted supplier of advanced photonics components in India. We provide expert consultation, product selection guidance, and integration support for UV LEDs like EOLD-340-012. With strong technical expertise and responsive after-sales service, we ensure reliable sourcing and long-term performance. Our commitment to quality and customer success enables industries to implement efficient UV-based sensing, biomedical, and analytical solutions tailored to their needs.
- Wide wavelength coverage from UV-C to SWIR applications
- Strong expertise in UV, VIS, IR, and SWIR THT LED technologies
- Technical guidance for sensing, illumination, and industrial integration
FAQs
What is the wavelength of EOLD-340-012?
It operates at approximately 340 nm in the UV-A spectrum.
What is the optical output power?
The LED provides around 1.3 mW optical output.
What is the beam angle?
It has a narrow beam angle of approximately 6° for focused illumination.
What applications is it best suited for?
It is used in fluorescence analysis, biomedical systems, forensics, and industrial inspection.
Is it suitable for industrial environments?
Yes, it operates from -40°C to +85°C and is designed for durable industrial use.
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FAQs
What is the wavelength of EOLD-340-012?
It operates at approximately 340 nm in the UV-A spectrum.
What is the optical output power?
The LED provides around 1.3 mW optical output.
What is the beam angle?
It has a narrow beam angle of approximately 6° for focused illumination.
What applications is it best suited for?
It is used in fluorescence analysis, biomedical systems, forensics, and industrial inspection.
Is it suitable for industrial environments?
Yes, it operates from -40°C to +85°C and is designed for durable industrial use.

