TSLC 4-core Ultra Violet LED
Version 1.0 Product code: 4xUV


Availability:  Out of Stock

NOTE: This LED produces a large quantity of short wavelength radiation which can be very dangerous for your eyesight! It is forbidden to look at the LED radiation from a short distance or in the darkness.

The LED is placed on a patented SinkPADTM MCPCB which provides an improved heat conducting path.
Color Max. current Max. voltage drop on the chain Wavelength LED emitter type
Requires soldering. Connect the "+" pad to the positive wire from driver, and "-" to negative.
Violet, near to UV-A




TSLC N35L-U 380-390nm 3pcs
TSLC N35L-U 400-410nm


Total power consumption, W:  up to 14.5
The МСРСВ dimensions, mm:  matches the standard 20mm “star”
Completely solderless NO



  • Best way to complement your existing LED fixture with Ultra Violet radiation to provide for best coloration, fluorescence, and coral growth *
  • Newest and most efficient TSLC (it is new name of Semileds) N35 crystals*
  • Advanced SinkPADTM metal board with improved heat path (up to 135 W/m.K), can be used with passive cooling heatsinks to achieve a most reliable fanless solution
  • This LED can use any optics designed for the popular XM-L LED by Cree
  • 100% quality control for all LEDs and the assembly



“*” no competing solutions were available on the market by July, 2015.

This LED are manufactured using as base the TSLC N5050U-UNx2

TSLC states that by maintaining an LED crystal temperature of less than 75C, one can use the LED at a current greater than 700ma as is described in the technical document for the basic option of the LED. Since the LED is installed on MCPCB with the SinkPADTM technology using a heat sink with passive cooling, it is possible to use it up to 700ma. Also, our research shows that when using active cooling of the LED heat sink, if  the crystal temperature is kept less than 75C, it can function up to 1A.

We do not recommend using the crystals at currents above 700ma without checking the crystal temperature using thermal vision.

The radiation power of our LED, depending on the supply current, is given in the table below:

Current, ma Radiation, mW (@ 25оС) Voltage drop, V
350 1400 13
700 2600 13.8
1000 3400 14.5

Thus, the real quantity of radiation received from one LED is up to 3400mWt, it is 10-20 times more than the cheap single-crystal violet LED's that are commonplace on the market. 

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Note: – the tutorial was made using rev. 2.2 of the 6-channel LED assembly and a different connector. You can also watch our video tutorial on how to use the new connectors.

Using the KRP crimper tool:

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