LRH1035 Datasheet, PDF (10/15 Pages) LUXPIA – Specification for Approval

8.2. criteria for judging the damage
item
symbol
forward voltage
V_F
luminous intensity
I_V
5) _{U.S.L. : upper standard level}
6) _{L.S.L. : lower standard level}
test condition
I_F = 20mA
I_F = 20mA
criteria for judgement
min
max
-
U.S.L.⁵⁾ × 1.1
L.S.L.⁶⁾ × 0.7
-
9. Cautions
White LEDs are devices which are materialized by combining Blue LEDs and special phosphors.
Consequently, the color of White LEDs is subject to change a little by an operating current. Care
should be taken after due consideration when using LEDs.
(1) Moisture-Proof Package
• When moisture is absorbed into the SMT package it may vaporize and expand products during
soldering. There is a possibility that this may cause exfoliation of the contacts and damage to the
optical characteristics of the LEDs. For this reason, the moisture-proof package is used to keep
moisture to a minimum in the package.
• A package of a moisture-absorbent material (silica gel) is inserted into the shielding bag. The
silica gel changes its color from blue to pink as it absorbs moisture.
(2) Storage
• Storage Conditions
- Before opening the package :
The LEDs should be kept at 30 or less and 90%RH or less. The LEDs should be used within a
year. When storing the LEDs, moisture-proof packaging with moisture-absorbent material (silica gel)
is recommended.
- After opening the package :
The LEDs should be kept at 30 or less and 70%RH or less. The LEDs should be soldered within
168 hours (7 days) after opening the package. If unused LEDs remain, they should be stored in
moisture-proof packages, such as sealed containers with packages of moisture-absorbent material
(silica gel). It is also recommended to return the LEDs to the original moisture-proof bag and to
reseal the moisture-proof bag again.
• If the moisture-absorbent material (silica gel) has faded away or the LEDs have exceeded the
rocommended storage time, baking treatment should be performed using the following conditions.
- Baking treatment : more than 24 hours at 65±5
• Luxpia's LED electrode sections are comprised of a silver-plated copper alloy. The silver surface
may be affected by environments which contain corrosive gases and so on. Please avoid condition
which may cause difficulty during soldering operations. It is recommended that the User use the
LEDs as soon as possible.






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