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LAMP
204-15/T2C3-4LQA
 
 
9 
Copyright ?2010, Everlight All Rights Reserved. Release Date : May. 03, 2013. Issue No: DLE-0001234_Rev.4
www.everlight.com 
 
Prehead
laminar wave
Fluxing
    Recommended soldering profile
 
 
 
 
 
 
 
 
 
 
    Avoiding applying any stress to the lead frame while the LEDs are at high temperature particularly when
soldering.
    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 cant 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.
 
 
 
 
 
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