LRH1035 Datasheet, PDF (12/15 Pages) LUXPIA – Specification for Approval

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• Occasionally there is a brightness decrease caused by the influence of heat or ambient
atmosphere during air reflow. It is recommended that the User use the nitrogen reflow method.
• Repairing should not be done after the LEDs have been soldered. When repairing is unavoidable,
a double-head soldering iron should be used. It should be confirmed beforehand whether the
characteristics of the LEDs will or will not be damaged by repairing.
• Reflow soldering should not be done more than two times.
• When soldering, do not put stress on the LEDs during heating.
• After soldering, do not warp the circuit board.
(5) Cleaning
• It is recommended that isopropyl alcohol be used as a solvent for cleaning the LEDs. When using
other solvents, it should be confirmed beforehand whether the solvents will dissolve the package
and the resin or not. Freon solvents should not be used to clean the LEDs because of worldwide
regulations. 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. Before cleaning, a pre-
test should be done to confirm whether any damage to the LEDs will occur.
(6) Static Electricity
• Static electricity or surge voltage damages the LEDs. It is recommended that a wrist band or an
anti-electrostatic glove be used when handling the LEDs.
• All devices, equipment and machinery must be properly grounded. It is recommended that
measurements be taken against surge voltage to the equipment that mounts the LEDs.
• When inspecting the final products in which LEDs were assembled,it is recommended to check
whether the assembled LEDs are damaged by static electricity or not. It is easy to find static-
damaged LEDs by a light-on test or a V_F test at a lower current (below 1mA is recommended).
• Damaged LEDs will show some unusual characteristics such as the leak current remarkably
increases, the forward voltage becomes lower, or the LEDs do not light at the low current.
- criteria : V_F > 2.0V at I_F=0.5ɶ
(7) Others
• Care must be taken to ensure that the reverse voltage will not exceed the absolute maximum
rating when using the LEDs with matrix drive.
• The LED light output is strong enough to injure human eyes. Precautions must be taken to
prevent looking directly at the LEDs with unaided eyes for more than a few seconds.






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