DOWA TO46S 310nm uv led diode
Product Details Description
The xFxVL-1H321 is a DOWA UV LED diode series developed for engineering applications that require compact ultraviolet emission in a TO46S package. The series includes 310nm, 325nm, and 340nm wavelength versions, allowing equipment manufacturers to choose different UV bands for optical testing, sensing, analysis, and instrument development.
The 310nm uv led version is suitable for projects that require a UVB / deep ultraviolet light source with a narrow beam. It provides 0.9mW radiant flux at 310nm, 5V forward voltage, 40mA current, and a 6° view angle. This optical design is useful when the target application requires directed UV output rather than broad-area black light illumination.
The TO46S hemispherical can package offers a compact φ5mm metal-can format with a hemi lens. This helps engineers integrate the diode into small optical paths, sensor modules, sample holders, test chambers, and laboratory-style instruments. The narrow beam angle can simplify alignment when the system needs to send UV radiation toward a detector, material surface, or controlled measurement point.
This 310nm uv led can be used in spectroscopy equipment, fluorescence excitation tools, chemical detection systems, biological analysis instruments, phototherapy equipment development, UV curing tests, material response evaluation, and customized optical modules. It is best positioned as a precision UV LED component for OEM systems, not as a general-purpose UV strip, black light lamp, or disinfection product.
The 325nm version provides 1.0mW radiant flux at 4.5V, while the 340nm version provides 0.9mW at 4V. All three wavelength options operate at 40mA. This makes the xFxVL-1H321 series helpful for engineers comparing 310nm, 325nm, and 340nm wavelength behavior under a similar TO46S structure.
For reliable operation, the LED should be driven by a proper current-controlled circuit. UV LED performance can be affected by electrical overstress, heat buildup, soldering conditions, handling, contamination, and optical alignment. System-level testing is recommended before mass production, especially for spectroscopy, curing, phototherapy-related devices, or biological analysis instruments.
This 310nm uv led emits ultraviolet radiation and must be handled with care. Do not look directly at the operating LED, and do not expose skin or eyes to UV radiation. Use shielding, protective eyewear, warning labels, and safe test procedures during engineering evaluation and device integration.
Specifications
Brand: DOWA
Model NO.: xFxVL-1H321
Wavelength: 310nm / 325nm / 340nm
TO Type: TO46S
Radiant Flux: 0.9mW at 310nm / 1.0mW at 325nm / 0.9mW at 340nm
Voltage: 5V at 310nm / 4.5V at 325nm / 4V at 340nm
Current: 40mA
View Angle: 6°
Lens Type: Hemi
TO Diameter: φ5mm
FAQ
What is this 310nm uv led used for?
This 310nm uv led is used as a compact UVB light source for spectroscopy, fluorescence excitation, chemical analysis, biological analysis, UV sensing, curing tests, phototherapy equipment development, and OEM optical modules.
Is this a DOWA UV LED?
Yes. This product is from the DOWA xFxVL-1H321 series and uses a TO46S hemispherical can package.
What wavelength options are available?
The xFxVL-1H321 series includes 310nm, 325nm, and 340nm wavelength options.
What is the radiant flux of the 310nm version?
The 310nm version provides 0.9mW radiant flux.
What is the forward voltage?
The forward voltage is 5V at 310nm, 4.5V at 325nm, and 4V at 340nm.
What current does this UV LED use?
The rated current is 40mA.
What package does this LED use?
It uses a TO46S package with a hemi lens and φ5mm TO diameter.
What is the beam angle?
This 310nm uv led has a narrow 6° view angle, making it suitable for focused optical paths and precision UV illumination.
Can it be used for UV curing?
It can be used for selected low-power UV curing or material response tests when the material is sensitive to 310nm and the required UV dose is confirmed by system testing. It is not a high-power curing lamp.
Can it be used for phototherapy equipment?
310nm UVB may be considered in phototherapy-related device development, but medical equipment requires strict optical, electrical, safety, and regulatory validation before use.
Can it be used for disinfection?
This product should not be promoted as a disinfection light source. It is better suited for spectroscopy, sensing, fluorescence excitation, curing tests, and analytical equipment.
Is it safe to view directly?
No. Do not look directly at the working UV LED or expose skin and eyes to UV radiation. Use protective eyewear, shielding, warning labels, and controlled test procedures during integration.
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