NGPLR70ASS NICHIA CORPORATION, NGPLR70ASS Datasheet - Page 7

• Manufacturer Part Number: NGPLR70ASS
• Description: Nichia Warm White Led
• Manufacturer: NICHIA CORPORATION

(5) Heat Generation
(7) Others
(6) Safety Guideline for Human Eyes
· Thermal design of the end product is of paramount importance.
· Please determine the operating current with consideration of the ambient temperature local to the LED
· The equation 1 indicates correlation between Tj and Ta, and the equation 2 indicates correlation
· In 1993, the International Electric Committee (IEC) issued a standard concerning laser product safety
· NGPLR70AS complies with RoHS Directive.
· Flashing lights have been known to cause discomfort in people; you can prevent this by taking
· The LEDs described in this brochure are intended to be used for ordinary electronic equipment (such
· User shall not reverse engineer by disassembling or analysis of the LEDs without having prior written
· 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.
of the LED when making the system design.
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.
within the maximum ratings given in this specification.
and refer to the plot of Ambient temperature vs. Allowable Forward Current on CHARACTERISTICS
in this specifications. Please also take measures to remove heat from the area near the LED to improve
the operational characteristics of the LED.
between Tj and Ts.
(IEC 825-1). Since then, this standard has been applied for diffused light sources (LEDs) as well
as lasers.
In 2001 IEC 60825-1 Amendment 2 converted the laser class into 7 classes for end products.
Components are excluded from this system. Products which contain visible LEDs are now classified
as class 1. Products containing UV LEDs are class 1M. Products containing LEDs can be classified
as class 2 in cases where viewing angles are narrow, optical manipulation intensifies the light, and/or the
energy emitted is high. For these systems it is recommended to avoid long term exposure.
It is also recommended to follow the IEC regulations regarding safety and labeling of products.
precautions during use.
incorporated into it.
as office equipment, communications equipment, measurement instruments and household appliances).
Consult Nichia’s sales staff in advance for information on the applications in which exceptional quality
and reliability are required, particularly when the failure or malfunction of the LEDs may directly
jeopardize life or health (such as for airplanes, aerospace, submersible repeaters, nuclear reactor
control systems, automobiles, traffic control equipment, life support systems and safety devices).
consent from Nichia.
disassembling or analysis.
Tj=Ta + Rja W
Ts = Solder Temperature (Cathode Side) : °C,
Tj = Dice Temperature : °C, Ta = Ambient Temperature : °C,
Rja = Heat resistance from Dice to Ambient temperature : °C /W,
Rjs = Heat resistance from Dice to Ts measuring point ≒ 60°C /W,
W = Inputting Power (I
In 1998 IEC 60825-1 Edition 1.1 evaluated the magnitude of the light source.
When defective LEDs are found, the User shall inform Nichia directly before
1
Also, people should be cautious when using equipment that has had LEDs
F
V
F
) : W
Tj=Ts + Rjs W
It is necessary to avoid intense heat generation and operate
The coefficient of temperature increase per input
-6-
2
Please consider the heat generation
Nichia STSE-CW7111A
<Cat.No.070626>