NSCLJ216A Datasheet, PDF (18/19 Pages) NICHIA CORPORATION – SPECIFICATIONS FOR WARM WHITE LED

NICHIA STS-DA1-2687C <Cat.No.131209>
(4) Design Consideration
● Volatile organic compounds that have been released from materials present around the LEDs (e.g. housing, packing,
adhesive, secondary lens, lens cover, etc.) may penetrate the LED lens and/or encapsulating resin.
If the LEDs are being used in a hermetically sealed environment, these volatile compounds can discolor after being exposed
to heat and/or photon energy and it may greatly reduce the LED light output and/or cause a color shift.
In this case, ventilating the environment may improve the reduction in light output and/or color shift.
Perform a light-up test of the chosen application for optical evaluation to ensure that there are no issues,
especially if the LEDs are planned to be used in a hermetically sealed environment.
● Excessive forces on this product can cause the ceramic package to crack.
It is recommended to use a holder when fixing this product to a chassis.
● It is recommended to use a thermal film or thermal grease between the product and a chassis for increased heat dissipation.
(5) Electrostatic Discharge (ESD)
● The products are sensitive to static electricity or surge voltage. ESD can damage a die and its reliability.
When handling the products, the following measures against electrostatic discharge are strongly recommended:
Eliminating the charge
Grounded wrist strap, ESD footwear, clothes, and floors
Grounded workstation equipment and tools
ESD table/shelf mat made of conductive materials
● Ensure that tools (e.g. soldering irons), jigs and machines that are being used are properly grounded and
that proper grounding techniques are used in work areas. For devices/equipment that mount the LEDs,
protection against surge voltages should also be used.
● If tools or equipment contain insulating materials such as glass or plastic,
the following measures against electrostatic discharge are strongly recommended:
Dissipating static charge with conductive materials
Preventing charge generation with moisture
Neutralizing the charge with ionizers
(6) Thermal Management
● Proper thermal management is an important when designing products with LEDs. LED die temperature is affected
by LED module thermal resistance and LED spacing. Please design products in a way that the LED die temperature
does not exceed the maximum Junction Temperature (T_J).
● The dice temperature of the products should be calculated, using the case temperature (T_C) of the product incorporated
into the end-product, by the following equation.
T_J=T_C+R_θJC･W
*T_J=LED junction temperature: °C
T_C=Case temperature: °C
R_θJC=Thermal resistance from junction to T_C measuring point: °C/W
W=Input power(I_F×V_F): W
Tc Point
17