LED quality control, issues that should be paid attention to in the LED production process

LED welding conditions

(1) Soldering with a soldering iron: The tip temperature of the soldering iron (maximum 30W) shall not exceed 300°C; the soldering time shall not exceed 3 seconds; the soldering position shall be at least 4 mm away from the colloid.
(2) Dip soldering: The maximum dip soldering temperature is 260°C; the dip soldering time shall not exceed 5 seconds; the dip soldering position shall be at least 4 mm away from the colloid.

LED Lead Forming Method

(1) The bracket must be bent 4 mm away from the colloid.
(2) The bracket must be formed with a fixture or by professionals.
(3) The bracket must be formed before welding.
(4) The bracket must ensure that the pins and spacing are consistent with those on the circuit board.

LED Installation Method

(1) Pay attention to the arrangement of the external wires of various devices to prevent the polarity from being installed incorrectly. The device should not be too close to the heating element, and the working conditions should not exceed the specified limits.
(2) Be sure not to install the LED when the pin is deformed.
(3) When deciding to install in a hole, calculate the size and tolerance of the hole surface and the hole distance on the circuit board to avoid excessive pressure on the bracket.
(4) When installing the LED, it is recommended to use a guide sleeve for positioning.
(5) Before the soldering temperature returns to normal, the LED must be protected from any vibration or external force.

LED Cleaning

Be especially careful when cleaning with chemicals, as some chemicals can damage the surface of the colloid and cause discoloration, such as trichloroethylene and acetone. You can wipe or soak with ethanol for
no more than 3 minutes at room temperature.

LED working and storage temperature

(1) LED LAMPS Topr -25℃～85℃, Tstg -40℃～100℃
(2) LED DISPLAYS Topr -20℃～70℃, Tstg -20℃～85℃
(3) OUR-DOOR LED LAMPS Topr -20℃～60℃, Tstg -20℃～70℃