LITE-ON TECHNOLOGY CORPORATION

Property of Lite-On Only

Part No.: LTPL-P013WS57 DATA SHEET (PRELIMINARY)

Page:

13

of

15

BNC-OD-C131/A4

9. Cautions

9.1. Application

The LEDs described here are intended to be used for ordinary electronic equipment (such as office

equipment, communication equipment and household applications).Consult Liteon

’s Sales in advance

for information on applications in which exceptional reliability is required, particularly when the failure

or malfunction of the LEDs may directly jeopardize life or health (such as in aviation, transportation,

traffic control equipment, medical and life support systems and safety devices).

9.2. Storage

The storage ambient for the LEDs should not exceed 30

°C temperature or 70% relative humidity.

It is recommended that LEDs out of their original packaging are soldered within 72hrs. For extended

storage out of their original packaging, it is recommended that the LEDs were stored in a sealed

container with appropriate desiccant, or a desiccators with nitrogen ambient. LEDs stored out of their

original packaging for more than 72hrs should be baked at about 60℃ for at least 24 hours before

solder assembly.

9.3.

Drive Method

An LED is a current-operated device. In order to ensure intensity uniformity on multiple LEDs

connected in parallel in an application, it is recommended that a current limiting resistor be

incorporated in the drive circuit, in series with each LED as shown in Circuit A below.

LED

LED

Circuit model A

Circuit model B

(A) Recommended circuit.

(B) The brightness of each LED might appear different due to the differences in the I-V characteristics

of those LEDs.