Application Note - LED Handling Guide

LED Handling Guide
Ver. 1.0 Release Date : 18 – June - 15
1. Common Handling Guide
3
2. COB (Chip on Board)
7
3. Revision History
10
Notice !
This document is designated for helping designing LED lightings. However,
† The readers should know that this document is made just for reference.
‡ The technical contents in this document are subject to change without notice.
Ver. 1.0 Release Date : 18-June-15
2
1) For over-current-proof function, customers are recommended to
apply resistors to prevent sudden change of the current caused
by slight shift of the voltage.
2) This device should not be used in any type of fluid such as
water, oil, organic solvent, etc. When washing is required, IPA is
recommended to use.
3) When the LEDs illuminate, operating current should be decided
after considering the ambient maximum temperature.
4) LEDs must be stored in a clean environment. If the LEDs are to
be stored for 3 months or more after being shipped from
Samsung Electronics, they should be packed by a sealed
container with nitrogen gas injected. (Shelf life of sealed bags
: 12 months, temp. ~40℃, ~90% RH).
5) After storage bag is open, device subjected to soldering, solder
reflow, or other high temperature processes must be.
a. Mounted within 672 hours(28 days) at an assembly line with a
condition of no more than 30℃/60%RH
b. Stored at <10%RH
6) Repack unused Products with anti-moisture packing, fold to close
any opening and then store in a dry place.
Ver. 1.0 Release Date : 18-June-15
3
7) Devices require baking before mounting, if humidity card reading
is >60% at 23±5℃
8) Devices must be baked for 10~24 hours at 60±5℃, if baking is
required.
9) The LEDs are sensitive to the static electricity and surge. It is
recommended to use a wrist band or anti-electrostatic glove when
handling the LEDs. If voltage exceeding the absolute maximum
rating is applied to LEDs, it may cause damage or even destruction
to LED devices. Damaged LEDs may show some unusual
characteristics such as increase in leak current, lowered turn-on
voltage, or abnormal lighting of LEDs at low current
10) VOCs (volatile organic compounds) can be generated from
adhesives, flux, hardener or organic additives used in luminaires
(fixtures). Transparent LED silicone encapsulant is permeable to
those chemicals and they may lead a discoloration of encapsulant
when they expose to heat or light. This phenomenon can cause a
significant loss of light emitted(output) from the luminaires(fixtures).
In order to prevent these problems, we recommend you to know
the physical properties of the materials used in luminaires, They
must be selected carefully.
Ver. 1.0 Release Date : 18-June-15
4
11) Risk of Sulfurization (or Tarnishing)
The LED from Samsung Electronics uses a silver-plated lead frame
and its surface color may change to black(or dark colored) when it is
exposed to sulfur(S), chlorine (Cl) or other halogen compound.
Sulfurization of lead frame may cause intensity degradation,
change of chromaticity coordinates and, in extreme cases,
open circuit.
It requires caution. Due to possible sulfurization of lead frame,
LED should not be used and stored together with oxidizing
substances made of materials in a following list,
: Rubber, plain paper, lead solder cream and so on.
Ver. 1.0 Release Date : 18-June-15
5
General Handling method
1) Box conveyance
•
Do not open except for approved protective work station
•
It is recommended surface mount products should be assembled after
opening this moisture barrier bag, under 30℃/60% R.H within 28 days
•
Deliver the products with specified packing(SEC packing specification)
do not change packing material or shape
•
Do not to strike the box materials with hard objects or step on them
•
DO not re - packing the box during transfer to user without SEC’s
approval
•
Do not drop the box higher than 70㎝ otherwise inside products will
be damaged
•
Do not fill up more than 6 stack (large size box)
Ver. 1.0 Release Date : 18-June-15
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2) Handling Guidelines (Tray)
Picture
Description
•
Users have not to touch the lighting
emitting surface(LES) in any cases
☞ At LES (Lighting Emitting Surface), the resin
and phosphor cannot protect the bonding
wire from deformation or disconnection by
an external force
X
O
X
Ver. 1.0 Release Date : 18-June-15
•
•
•
•
•
During COB handling, use of metallic
material (especially tweezers ) is prohibited.
A single COB must be handled one by one.
When handling COB, be sure to put on the
anti-static wrist strap or glove.
Be sure to use vacuum pad in COB handling.
One by One handling
•
Tools or other things should not be on the
product.
☞ Otherwise, COB may be damaged.
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2) Handling Guidelines (Tray)
Picture
Description
X
•
X
•
X
•
X
•
Ver. 1.0 Release Date : 18-June-15
•
•
•
•
•
Be sure to use vacuum pad instead of the
hands when inserting or pulling COB into or
from tray.
A single COB must be handled one by one.
Be sure to put on the wrist strap
Tray containing COB is susceptible to
damage with a slight shock and the
secondary damage by dislocation
inside tray is possible.
One by One Handling
COB dislocated inside tray must be moved
to its proper position with using vacuum
pad.
Loading of tray with COB dislocated inside
tray can cause COB damaged.
Keep COB at a designated location (Tray)
and do not deposit a number of COB in an
overlapping way.
Holding or storing COB in an overlapping
way is prohibited.
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2) Handling Guidelines (Tray)
Picture
O
X
O
O
X
O
X
Ver. 1.0 Release Date : 18-June-15
Description
•
Once handling a tray, must check 4 faces of
stacked tray.
•
Once moving stacked tray, it should be
banded by strap or band.
(minimum 2 side or cross banding)
•
Inner box always should be lay on with right
side up
•
Outbox always should be lay on with right
side up, too.
9
Writer
Date
Revision History
2015.06.18
New Version
This chemical test kit user guide
is subject to change without notice.
Ver. 1.0 Release Date : 18-June-15
10
Drawn
Approved
CS
I.H.Choi
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