WS2812B-2020 View Datasheet(PDF) - Unspecified
Part Name
Description
MFG CO.
'WS2812B-2020' PDF : 9 Pages View PDF
2.2. Moisture-proof packaging
WS2812C-2020
Intelligent control LED
integrated light source
TOP SMD LEDs are moisture sensitive components. LEDs are packaged in aluminum foil bag to prevent the
from absorbing moisture during transport and storage. A desiccant is placed in the bags to absorb moisture. If the
LED absorbs moisture, then it evaporates and expands when in reflow process, which may break the colloid from
the bracket and damage the optical performance of LED. For this reason, moisture-proof packaging is to prevent the
from absorbing moisture during transport and storage. The moisture resistance rating of WORLDSEMI’s LED is:
LEVEL 6.
Tabel I - IPC/JEDEC J-STD-020 Moisture/Reflow Sensitivity Classification
MSL Level
LEVEL1
LEVEL2
LEVEL2a
LEVEL3
LEVEL4
LEVEL5
LEVEL5a
LEVEL6
Workshop Life
Time
Unlimited
Conditions
≤30℃/85%RH
1 Year
≤30℃/60%RH
4 Weeks
≤30℃/60%RH
168 Hours
≤30℃/60%RH
72 Hours
48 Hours
≤30℃160%RH
≤30℃/60%RH
24 Hours
≤30℃/60%RH
Take-out and Use immediately
≤30℃/60%RH
2.3. Management after unpacking
It’s recommend to perform SMT assembly as soon as possible after opening the moisture-proof bag, and reflow
soldering should be completed within 4 hours after SMT assembly; for the remaining LEDs, they should be
re-packed in seal package and placed in moisture-proof cabinet (Please note that it’s necessary to rebake at
“70℃-75℃/48 hours” before next SMT process).
3. Dehumidification Operation (Non-leakage of air, baking temperature: 70℃-75℃)
a. MD within 2 weeks, baking time: 24 hours.
b. MD exceeds 2 weeks, baking time: 48 hours.
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