NICHIA STS-DA1-1379A <Cat.No.110629>

14

CAUTIONS

(1) Storage

Conditions

Temperature

Humidity

Time

Before Opening Aluminum Bag

≤30°C

≤90%RH

Within 1 Year from Delivery Date

Storage

After Opening Aluminum Bag

≤30°C

≤70%RH

≤168hours

Baking

65±5°C

-

≥24hours

● Product complies with JEDEC MSL 3 or equivalent. See IPC/JEDEC STD-020 for moisture-sensitivity details.

● Absorbed moisture in LED packages can vaporize and expand during soldering, which can cause interface delamination

and result in optical performance degradation. Products are packed in moisture-proof aluminum bags

to minimize moisture absorption during transportation and storage.

Included silica gel desiccants change from blue to red if moisture had penetrated bags.

● After opening the moisture-proof aluminum bag, the products should go through the soldering process

within the range of the conditions stated above. Unused remaining LEDs should be stored with silica gel desiccants

in a hermetically sealed container, preferably the original moisture-proof bags for storage.

● After the “Period After Opening” storage time has been exceeded or silica gel desiccants are no longer blue,

the products should be baked. Baking should only be done once.

● Although the leads or electrode pads (anode and cathode) of the product are plated with gold,

prolonged exposure to a corrosive environment might cause the gold plated the leads or electrode pads to tarnish,

and thus leading to difficulties in soldering. If unused LEDs remain, they must be stored in a hermetically sealed container.

Nichia recommends using the original moisture-proof bag for storage.

● Do not use sulfur-containing materials in commercial products. Some materials, such as seals and adhesives, may contain sulfur.

The contaminated plating of LEDs might cause an open circuit. Silicone rubber is recommended as a material for seals.

Bear in mind, the use of silicones may lead to silicone contamination of electrical contacts inside the products,

caused by low molecular weight volatile siloxane.

● To prevent water condensation, please avoid large temperature and humidity fluctuations for the storage conditions.

(2) Directions for Use

● When designing a circuit, the current through each LED must not exceed the Absolute Maximum Rating.

Operating at a constant current per LED is recommended. In case of operating at a constant voltage, Circuit B is recommended.

If the LEDs are operated with constant voltage using Circuit A, the current through the LEDs may vary due to the variation

in Forward Voltage characteristics of the LEDs.

(A)

(B)

● LEDs should be operated in forward bias. Driving circuits must not subject LEDs to either forward or reverse voltage while off.

Continuous reverse voltage can cause migration and LED damage.

● For stabilizing the LED characteristics, it is recommended to operate at greater than 10% nominal current.

● For outdoor use, necessary measures should be taken to prevent water, moisture and salt air damage.

(3) Handling Precautions

● Do not handle LEDs with bare hands, it may contaminate the LED surface and affect optical characteristics.

In the worst case, catastrophic failure from excess pressure through wire-bond breaks and package damage may result.

● When handling the product with tweezers, be careful not to apply excessive force to the resin.

Otherwise, The resin can be cut, chipped, delaminate or deformed, causing wire-bond breaks and catastrophic failures.

● Dropping the product may cause damage.

● Do not stack assembled PCBs together. Failure to comply can cause the resin portion of the product to be cut, chipped,

delaminated and/or deformed. It may cause wire to break, leading to catastrophic failures.