서식Rev: 01

www.seoulviosys.com

www.seoulviosys.com

17

1) Storage

•

To avoid moisture penetration, we recommend storing UV LEDs in a dry box with a desiccant.

The recommended temperature and Relative humidity are between 5℃ and 30℃ and below

50% respectively.

•

LEDs must be stored properly to maintain the device. If the LEDs are stored for 3 months or

more after being shipped from SVC, a sealed container with a nitrogen atmosphere should be

used for storage.

•

Replace the remained LEDs into the moisture-proof bag and reseal the bag after work to avoid

those LEDs being exposed to moisture. Prolonged exposure to moisture can adversely affect

the proper functioning of the LEDs.

•

If the package has been opened, components should be dried for 10-12hr at 60±5℃

•

The conditions of resealing are as follows

– Temperature is 5 to 40℃ and Relative humidity is less than 30%

2) Handling Precautions

•

VOCs (Volatile organic compounds) emitted from materials used in the construction of fixtures

can

penetrate silicone encapsulants of LEDs and discolor them when exposed to heat and

photonic energy.

The result can be a significant loss of light output from the fixture.

Knowledge of the properties of

the materials selected to be used in the construction of

fixtures can help prevent these issues.

•

In case of attaching LEDs, do not use adhesives that outgas organic vapor.

•

Soldering should be done as soon as possible after opening the moisture-proof bag.

•

Do not rapidly cool device after soldering.

•

Do not apply mechanical force or excess vibration during the cooling process to normal

temperature after soldering.

•

Components should not be mounted on warped (non coplanar) portion of PCB.

•

The optical window part of LED needs to be handled carefully as below

– Avoid touching the optical window especially with sharp tools such as Pincettes (Tweezers)

– Avoid leaving fingerprints on optical window parts.

– Optical window will attract dust so use covered containers for storage.

– When populating boards in SMT production, there are basically no restrictions regarding

the form of the pick and place nozzle, except that excessive mechanical pressure on the

surface of optical window parts must be prevented.

– It is not recommend to cover the optical window of the LEDs with other resin (epoxy,

urethane, etc)

Precaution for use