14/20

(Ver 1.0)

(4) Recommended circuit

• In designing a circuit, the current though each LED must not exceed its absolute maximum rating. It is

recommended to use Circuit B which regulates the current flowing through each LED. In the meanwhile,

when driving LEDs with a constant voltage in Circuit A, the current through the LEDs may vary due to the

variation in forward (VF) of the LEDs. In worst case, some LED may be subjected to stresses in excess of the

absolute maximum rating.

• This product should be operated in forward bias. Driving circuit must be designed so that the product is not

subjected to either forward or reverse voltage while it is off. In particular, if a reverse voltage is continuously

applied to the product, such operation can cause migration resulting in LED damage.

• Please determine the operating current with consideration of the ambient temperature local to the LED 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.

(5) Handling Precautions

• Bare Hand

When handling the product, touching encapsulant with bare hands will contaminate its surface that could

affects optical characteristics. In the worst cases, excessive force the encapsulant by hands might result in

catastrophic failure of the LEDs due to wire deformation and/or breakage.

• Tweezers

Since silicone used as encapsulating resin in this product is a soft material, the upper surface of the product

is soft. Pressuring onto the product might cause catastrophic failure of the LEDs due to damage to

encapsulant (such as scratch, chip-out and delamination) and wire (such as deformation and breakage) and

LED detachment.