www.seoulsemicon.com

Product Data Sheet

SDWx4F1C

– Chip on Board

25

Precaution for Use

(11) Long time exposure of sun light or occasional UV exposure will cause silicone discoloration.

(12) Attaching LEDs, do not use adhesive that outgas organic vapor.

(13) The driving circuit must be designed to allow forward voltage only when it is ON or OFF. If the

reverse voltage is applied to LED, migration can be generated resulting in LED damage.

(14) Please do not touch any of the circuit board, components or terminals with bare hands or metal

while circuit is electrically active.

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

can penetrate silicone encapsulants of LEDs and discolor 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.

(16) LEDs are sensitive to Electro-Static Discharge (ESD) and Electrical Over Stress (EOS). Below is

a list of suggestions that Seoul Semiconductor purposes to minimize these effects.

Ⅰ. ESD (Electro Static Discharge)

Electrostatic discharge (ESD) is the defined as the release of static electricity when two objects come

into contact. While most ESD events are considered harmless, it can be an expensive problem in

many industrial environments during production and storage. The damage from ESD to an LEDs may

cause the product to demonstrate unusual characteristics such as:

- Increase in reverse leakage current lowered turn-on voltage

- Abnormal emissions from the LED at low current

The following recommendations are suggested to help minimize the potential for an ESD event.

One or more recommended work area suggestions:

- Ionizing fan setup

- ESD table/shelf mat made of conductive materials

- ESD safe storage containers

One or more personnel suggestion options:

- Antistatic wrist-strap

- Antistatic material shoes

- Antistatic clothes

Environmental controls:

- Humidity control (ESD gets worse in a dry environment)