Item Name:270nm Deep UVC LED 150mA for Air Disinfection
Model Number: GG-3535UVC1618
Input Current: 100-150mA
Power consumption: 1 Watt
Input Voltage: 6-8VDC
LED package type: SMD3535
Chips brand: Taiwan Epileds or Korea PW
UVC Chip size: 20*20mil
Wavelength: 265-280nm
Emitting Power: 16-18mW
GMKJ UVC SMD LED main product:
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■ Electrical/Optical Characteristics--White (At TA=25°C)
Parameter | Symbol | Conditions | Min | Avg. | Max | Units |
Forward Voltage | VF | IF=150mA | 5.00 | -- | 8.00 | V |
Thermal Resistance Junction To Board | RΘJ-B | IF=150mA | -- | 8 | -- | °C/W |
Radiant Flux | Φe | IF=150mA | 16 | 20 | mW | |
Peak wavelength | λp | IF=150mA | 265 | 280 | nm | |
Temperature Coefficient of Forward Voltage | ∆VF/∆T | IF=150mA | −− | -2 | −− | mV/°C |
Reverse Current | IR | VR=10V | −− | −− | 10 | μ A |
Viewing Angle [1] | 2Θ1/2 | IF=150mA | −− | 100 | −− | Deg |
Note:
1. The above forward voltage measurement allowance tolerance is ±0.1V。
2. The above luminous flux measurement allowance tolerance is ±10%。
3. The wavelength measurement error shown above is plus or minus 0.1nm。
4.2q1/2 is the angle from optical centerline where the luminous intensity is 1/2 the optical centerline value。
Package dimensions:
Applications:
UVC LED Chip is mainly used for the sterilizer for killing the virus and bacteria.
About Production Process:
More information about UVC LED:
1. When Ultraviolet (UV) radiation is used to treat water, does the water become radioactive?
You are justifiably confused about the word "radiation". I prefer to use the term "UV light" rather than "UV radiation" for the very reason that you are confused. Ultraviolet is "light" - you can't see it because our eyes are not sensitive to UV; however, it is a form of light with wavelengths beyond the "violet" end (hence the term "ultraviolet") of the rainbow spectrum.
Since UV is "light", it travels through air and water at the speed of light and when the UV source is turned off, the UV is gone. There are no "residuals" and the water that has been exposed to UV is the same as it was before exposure, and certainly the water is not "radioactive". It is like shining a bright light into a glass of water. I think you would agree that when you turn off the light, the water has not changed.
UV water disinfection units are designed to provide enough "UV dose" so that any pathogenic microorganisms in the water are rendered "inactive". What happens is that the UV is absorbed by the DNA in microorganisms; the DNA is damaged so that the microorganism cannot reproduce. Cells that cannot reproduce cannot cause disease. The beautiful thing about UV is that it does its job while the water is passing through the unit, but after the water has passed through, it has been "disinfected", but its "water quality" has not changed.
2. I understand one needs 1/100 of a watt-second per square cm for water purification using 254 nm UV. What is the dosage for air?
Most regulatory bodies now specify a fluence or UV dose of 40 mJ/cm2 (note that 1 mWs = 1 mJ) to assure at least 4 logs inactivation of any pathogenic microorganisms. Since the fluence or UV dose applied is independent of the medium, this requirement would also apply to air. However, I am not aware of any regulations as yet regarding UV air treatment.
3. Forgive what might be an unusual question: I am considering using UVC germicidal bulbs for oxidizing the surface of wood. Some of my peers have used UVB bulbs for years to create a 'tanned' surface to freshly exposed wood, to give it a jump-start in its aging process, but I seem to feel the need for a more intense treatment, and ultimately would love to know which spectrum is the best for this process. I will not be present while the lights would be operating, and there shouldn't be a safety problem; just a need for the most intense oxidizing exposure possible, in the shortest amount of time. Which wavelength is for me? For the record, I'm a violin bow maker, and both violin makers and bow makers in the last centuries have simply hung their assembled yet unfinished instruments and bows under the eaves to expose them to direct sunlight for 6 months for the desired result, but needless to say this is not a cost-effective way of violin or bow production in the 21st century. The radical alternative is direct nitric acid, or nitric acid fuming, but that has a rather negative health impact, and I would avoid it if I could.
Well, this is an interesting question! he word "oxidation" can mean many things:
Reaction with oxygen to form more "oxidized" compounds (e.g., the oxidation of methanol to formaldehyde).
Increase of the oxidation number of an element [e.g., conversion of Fe(II) to Fe(III)]
Complete mineralization of organic compounds to form CO2, H2O and mineral acids for any Cl, N, P, S, etc. present in the compound.
Direct photolysis of a compound {e.g., photolysis of nitrosodimethylamine [(CH3)2N-N-O]}.
I presume that you are referring to the first definition, as regards the "tanning" of wood.
Wood is a very complex organic structure with many components that absorb UV. However, not all UV absorption leads to chemical reaction (photochemistry). Most photochemical reactions occur at wavelengths less than 300 nm (there are many exceptions, e.g., photosynthesis, which operates with visible light up to 700 nm). Hence, I would suspect that the most effective UV lamp for your purposes would be a "germicidal" UV lamp, such as a low pressure mercury lamp (emits principally at 254 nm) or a medium-pressure mercury lamp (emits over a broad range from 200-400 nm in the UV). Low pressure lamps are relatively low power (a 1.2 m long lamp has a power of about 40 W). Medium pressure lamps are much more powerful (e.g., a 10 cm lamp has a power of about 1 kW). The "UV effect" will be generated at a rate that is roughly proportional to the power of the lamp (given that the distance to the "target" is the same).
You may find that pre-treatment with hydrogen peroxide will enhance the "UV effect", since photolysis of H2O2 generates hydroxyl radicals (·OH), a very powerful oxidizing agent.
You mention "safety", and I cannot emphasize enough that you must totally enclose the irradiation chamber so that there is no possibility of skin or eye exposure to anyone. UV is totally unforgiving in this manner.
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