NSPE310S Datasheet, PDF (7/13 Pages) NICHIA CORPORATION – SPECIFICATIONS FOR NICHIA BLUISH-GREEN LED

Nichia STS-DA1-1102
<Cat.No.100331>
(6) Heat Generation
· Thermal design of the end product is of paramount importance. Please consider the heat generation
of the LED when making the system design. The coefficient of temperature increase per input
electric power is affected by the thermal resistance of the circuit board and density of LED
placement on the board, as well as other components. It is necessary to avoid intense heat generation
and operate within the maximum ratings given in this specification.
· The operating current should be decided after considering the ambient maximum temperature of LEDs.
(7) Cleaning
· It is recommended that isopropyl alcohol be used as a solvent for cleaning the LEDs. When using
other solvents, it should be confirmed beforehand whether the solvents will dissolve the resin or not.
Freon solvents should not be used to clean the LEDs because of worldwide regulations.
· Do not clean the LEDs by the ultrasonic. When it is absolutely necessary, the influence of ultrasonic
cleaning on the LEDs depends on factors such as ultrasonic power and the assembled condition.
Before cleaning, a pre-test should be done to confirm whether any damage to the LEDs will occur.
(8) Safety Guideline for Human Eyes
· The International Electrical Commission (IEC) published in 2006 IEC 62471:2006 Photobiological
safety of lamps and lamp systems which includes LEDs within its scope. Meanwhile LEDs were
removed from the scope of the IEC 60825-1:2007 laser safety standard, the 2001 edition of which
included LED sources within its scope. However, keep in mind that some countries and regions have
adopted standards based on the IEC laser safety standard IEC 60825-1:2001 which includes LEDs
within its scope.
Following IEC 62471:2006, most of Nichia LEDs can be classified as belonging to either Exempt
Group or Risk Group 1. Optical characteristics of a LED such as radiant flux, spectrum and light
distribution are factors that affect the risk group determination of the LED. Especially a high-power
LED, that emits light containing blue wavelengths, may be in Risk Group 2.
Great care should be taken when viewing directly the LED driven at high current or the LED with
optical instruments, which may greatly increase the hazard to your eyes.
(9) Others
· NSPE310S complies with RoHS Directive.
· If the LEDs are being used after being fixed into a case (container, box, etc...) the LEDs must not
be mounted so that the epoxy lens is pressed or glued onto a plastic (or metal) board.
· Flashing lights have been known to cause discomfort in people; you can prevent this by taking
precautions during use. Also, people should be cautious when using equipment that has had LEDs
incorporated into it.
· These LEDs are designed and manufactured for standard applications of traffic signals.
It is recommended to consult with Nichia in advance if these LEDs are used for other applications.
· The customer shall not reverse engineer by disassembling or analysis of the LEDs without having prior
written consent from Nichia. When defective LEDs are found, the customer shall inform Nichia
directly before disassembling or analysis.
· The formal specifications must be exchanged and signed by both parties before large volume purchase begins.
· The appearance and specifications of the product may be modified for improvement without notice.
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