EVERLIGHT ELECTRONICS CO., LTD.
Technical Data Sheet
Flat Power LED
32-01/T4C-4PRB
Everlight Electronics Co., Ltd. http://www.everlight.com Rev.: 3 Page:
13 of 14
Device No.: DLE-302-032 Published date: 24-Nov.-2009 Created by: Ken Lee
from the base of stopper
Dip and hand soldering should not be done more than one time
After soldering the LEDs, the epoxy bulb should be protected from mechanical shock or
vibration until the LEDs return to room temperature.
A rapid-rate process is not recommended for cooling the LEDs down from the peak
temperature.
Although the recommended soldering conditions are specified in the above table, dip or
handsoldering at the lowest possible temperature is desirable for the LEDs.
Wave soldering parameter must be set and maintain according to recommended
temperature and dwell time in the solder wave.
4. Cleaning
When necessary, cleaning should occur only with isopropyl alcohol at room temperature
for a duration of no more than one minute. Dry at room temperature before use.
Do not clean the LEDs by the ultrasonic. When it is absolutely necessary, the influence of
ultrasonic cleaning on the LEDs depends on factors such as ultrasonic power and the
assembled condition. Ultrasonic cleaning shall be pre-qualified to ensure this will not
cause damage to the LED
5. Circuit Protection
Below the zener reference voltage Vz, all the current flows through LED and as the
voltage rises to Vz, the zener diode “breakdown." If the voltage tries to rise above Vz
current flows through the zener branch to keep the voltage at exactly Vz.
When the LED is connected using serial circuit, if either piece of LED is no light up but
current can’t flow through causing others to light down. In new design, the LED is
parallel with zener diode. if either piece of LED is no light up but current can flow
through causing others to light up.
