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1. Scope of Application
These specifications are applied to the chip type LED lamp , model CL-L251-MC6L2-C
2. Part code
C L - L 2 5 1 - M C 6 L 2 - C
Series
L251 : White power LED for general lighting.
Special specifications
Watt Class
C6 : 6 watt package.
Lighting color
L2 : Energy Star Correlated Color Temperature 2700(K)
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SPECIFICATIONS
Description Appro.
Issue of first edition
CITIZEN ELECTRONICS CO.,LTD.
CL-L251-MC6L2-CName
Drawing No
Ref.CE-P620 03/10
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3. Outline drawing
4. Performance
( 1 ) Absolute Maximum Rating
Symbol Unit
Power Dissipation PDW
Forward Current IFmA
Forward Pulse Current IFP mA *1
Reverse Current IRmA
Operating Temperature TOP C
Storage Temperature TST C
Junction Temperature Tj Max C*2
*1 Forward Current : Duty<=1/10 , Pulse Width<=10msec
*2 D.C. Current : Tj = Tc + Rj-c × P
D
Pulse Current : Tj = Tc + Rj-c × Pw(Power Dissipation / one-Pulse) × duty
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SPECIFICATIONS
Name
Parameter Rating Value
8.9
840
1,200
-30 ~ +85
120
-40 ~ +100
1
CL-L251-MC6L2-C
Description Appro.
CITIZEN ELECTRONICS CO.,LTD.
Issue of first edition
Drawing No
Anode
Cathode Resin
Anode
Protection
device
Cathode ×12 ×12 ×12
It has a protection device built in as a
protection circuit against static electricity.
09716300001
M6L2C
Ref.CE-P620 03/10
3/9
( 2 ) Electro-optical Characteristics
( Tc=25 C )
Symbol Condition Min. Typ. Max. Unit
VFIF=720mA 8.75 9.30 10.5 V
Φv IF=720mA 332 390 - lm
Ra IF=720mA - 85 - -
Rj-c Junction-case - 4.0 - C/W
Chromaticity coordinates ( Condition : I
F
=720mA ,Tc=25 C )
x y
Center 0.4578 0.4101
a 0.4813 0.4319
b 0.4562 0.4260
c 0.4373 0.3893
d 0.4593 0.3944
*Color region stay with in MacAdam "3-step" ellipse from center.
Note: The tolerance of measurement at our tester is V
F
±3% , Φv±10% , Chromaticity(x,y)±0.005.
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L2
Description Appro.
CITIZEN ELECTRONICS CO.,LTD.
CL-L251-MC6L2-C
Issue of first edition
Name
SPECIFICATIONS
Thermal Resistance
Color rank
Parameter
Forward Voltage
Luminous Flux
General Color
Rendering Index
Drawing No
0.38
0.39
0.40
0.41
0.42
0.43
0.44
0.43 0.44 0.45 0.46 0.47 0.48 0.49
x
y
Ref.CE-P620 03/10
4/9
5. Characteristics
Forward Current vs. Forward Voltage
Forward Current vs. Relative Luminous Flux
Forward Current vs. Chromaticity Coordinate
Case Temperature vs. Chromaticity Coordinate
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Drawing No
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CITIZEN ELECTRONICS CO.,LTD.
Name CL-L251-MC6L2-C
SPECIFICATIONS
-0.020
-0.015
-0.010
-0.005
0.000
0.005
0.010
0.015
0.020
0 100 200 300 400 500 600 700 800
IF [mA]
Δx, Δy
x
y
0%
20%
40%
60%
80%
100%
120%
140%
0 100 200 300 400 500 600 700 800
IF [mA]
Relative Luminous Flux [a.u.]
7.5
8.0
8.5
9.0
9.5
10.0
10.5
0 100 200 300 400 500 600 700 800
IF [mA]
V
F
[V]
-0.020
-0.015
-0.010
-0.005
0.000
0.005
0.010
0.015
0.020
0 20 40 60 80 100
Tc [C]
Δx, Δy
x
y
IF=720mATc=25C
Tc=25C Tc=25C
Ref.CE-P620 03/10
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Case Temperature vs. Forward Voltage
Case Temperature vs. Relative Luminous Flux
Case Temperature vs. Allowable Forward Current
Spectrum
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CL-L251-MC6L2-C
SPECIFICATIONS
Description Appro.
CITIZEN ELECTRONICS CO.,LTD.
Drawing No
Issue of first edition
Name
7.5
8.0
8.5
9.0
9.5
10.0
10.5
0 20 40 60 80 100
Tc [C]
[V]
0%
20%
40%
60%
80%
100%
120%
0 20 40 60 80 100
Tc [C]
Relative Luminous Flux [a.u.]
0.0
0.2
0.4
0.6
0.8
1.0
1.2
350 450 550 650 750
λ [nm]
Relative Emission Intensity [a.u.]
0
100
200
300
400
500
600
700
800
900
0 25 50 75 100 125
Tc [C]
I
F
[mA]
IF=720mA IF=720mA
IF=720mA
Ref.CE-P620 03/10
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6. Reliability
(1) Details of the tests
(2) Judgment Criteria of Failure for Reliability Test (Ta=25 C)
Symbol
VF
Φv
U defines the upper limit of the specified characteristics. S defines the initial value.
CL-L251-MC4L reliability test results will be used for CL-L251-MC6L2-C.
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Description Appro.
CITIZEN ELECTRONICS CO.,LTD.
Total Luminous Flux
returned to the normal ambient conditions after the completion of each test.
Issue of first edition
Drawing No
Name CL-L251-MC6L2-C
Measuring Condition Judgment Criteria for FailureMeasuring Item
Forward Voltage
Note: Measurement shall be taken between 2 hours and 24 hours, and the test pieces should be
-40 C × 1000 hours
High Temperature Storage Test 100 C × 1000 hours
Thermal Shock Test
IF=480mA
IF=480mA
-40 C × 30 minutes – 100 C × 30 minutes, 100 cycle
> U × 1.1
< S × 0.85
Ta=-25 C, IF=480 mA× 1000 hours(with Al-fin)
Ta=50 C,IF=480 mA× 1000 hours(with Al-fin)
Moisture-proof Test 60 C, 90 %RH for 1000 hours
Continuous Operation Test
Low Temperature Storage Test
Test Item Test Condition
SPECIFICATIONS
Ref.CE-P620 03/10
7/9
7. Packing Specifications
(1) Packing
An empty tray is placed on top of a five-tier tray which contain 48 pieces each. The set of six
trays is banded together with two rubber bands.
(Smallest packing unit: 240 pieces)
A label with product name, quantity, lot number is placed on the upper empty tray.
Tray (Dimensions: 310 × 200 × 14.6mm / Materials: Electrically conductive PS)
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SPECIFICATIONS
Issue of first edition
Description Appro.
CITIZEN ELECTRONICS CO.,LTD.
Name CL-L251-MC6L2-C
Drawing No
< Packing figure >
Product 50pcs/tray
310
210
14.6
1. TYPE e.g. CL-L251-MC6L2-C
2. P.No. (Cutomer's P/N) e.g. xxx
3. Lot No. e.g. 03D001
- First letter: Last digit of the year e.g. 0 : year 2010
- Second letter: Production month e.g. 3 : Mar
Note: October, November and December are designated
by X, Y and Z, respectively.
- Third letter: CE's control number e.g. D001
4. Quantity e.g. 240 pieces
< Example of indication label >
CUSTOMER
PASS
CITIZEN ELECTRONICS
TYPE
P.NO
LOT No
Q'ty
CL-L251-MC6L2-C
xxx
03D001
240 pcs.
---(1)
---(2)
---(3)
---(4)
Product 50pcs/tray
Ref.CE-P620 03/10
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Precautions
1. Avoid the application of any stress to the lens portion.
2. Avoid any contact by a sharp metal nail or other materials with the lens portion.
3. This product should be secured firmly by fastening an M3 screw on both sides of the product.
Please be careful not to apply any stress to the product during the clamping operation.
please check thoroughly.
can dissipate heat as a whole. However, the use of insulating paste is strongly recommended in
order to avoid short circuit. This product could be bent during the clamping operation if heat
grease in sheet form is used. For this reason, it is recommended that grease in paste form is used.
5. Handling of static electricity
- These products are sensitive to static electricity charge.
Please take measures to prevent any static electricity being produced such as the wearing of a
wristband or anti-static gloves when handling this product.
- All devices, equipment and machinery must be properly grounded. It is recommended that precautions
be taken against surge voltage to the equipment that mounts the LEDs.
- ESD sensitivity of this product is 1000V (HBM, based on JEITA ED-4701/304).
- 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.
<Light-on test criterion>
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4. Thermal conductive silicone grease should be applied to the whole rear surface so that this product
In addition, sufficient insulation should be established between heat sink area of LED package and
SPECIFICATIONS
surface of fixture. (*surface of fixture: exterior of instrument used for dielectric strength test
in Electrical Appliance and Material Safety Law.)
Description Appro.
CITIZEN ELECTRONICS CO.,LTD.
CL-L251-MC6L2-C
Condition
Judgmental criterion
IF=Max.1mA No-lighting in entire block making
up parallel circuit is unacceptable
Drawing No
Name
Issue of first edition
As the connection status could vary depending on materials of outer heat sink,
Resin portion (Shaded area)
L251 consists of three blocks.
Recommended installation screw pitch
13.08
12.64 mm
Thermal conductive silicon grease
(Insulation paste)
Outer heat sink
Spring washer (
ƒΣ6mm)
M3screw (Insulation)
Plane washer (
ƒΣ6mm)
Recommended torque : 0.6~0.8N-m
Ref.CE-P620 03/10
9/9
Precautions (continued)
in assembled status.
8. Heat generation
a heat release design is required to use this product efficiently.
Please ensure that heat generation is not in excess of the absolute maximum rating.
(Refer to 4-1 Performance)
9. Recommended soldering
of 40W or lower. The temperature of a soldering iron should be adjusted 350C or lower.
- No external force is applied to sealing resin during soldering operation.
- Please do not handle a product until it returns to a normal temperature.
Note: This product is not adaptable to reflow process.
10. Other
- This product complies with RoHS directives.
office automation equipment, communication devices, audio-video equipment,
home electrical appliances, measurement hardware and others).
In cases where this product is used for the applications that requires high reliability or
could directly affect human life or health due to failure or malfunction (aerospace hardware,
medical equipment, atomic control equipment and others), please consult with our sales
representatives beforehand.
- An agreement of formal product specifications is required prior to mass production.
- The specifications and appearance of this product are subject to change without advanced notice.
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fabrication such as changes in shape.
- Our warranty does not cover situations where this product undergoes secondary
6. Please be aware that this product should not come into contact with any other parts
taken into consideration, depending on ambient temperature (Ta).
SPECIFICATIONS
Description Appro.
CITIZEN ELECTRONICS CO.,LTD.
Name CL-L251-MC6L2-C
Drawing No
Issue of first edition
- Soldering operation should be performed within 3.5 seconds per land using a soldering iron
- This product is intended for the application in general electronic devices (such as
- As this product is designed with consideration of the heat release property of module,
- Factors responsible for an increase in temperature include heat generation attributed to
7.Drive circuit
And when two or more LED packages are connected, the series connection
- A constant current circuit is recommended as a drive circuit.
between each package is recommended.
ambient temperature conditions or power dissipation. Thus, drive conditions should be
- Please design a circuit that prevents any reverse voltage (excess current) from being
applied to this product instantaneously when the circuit is ON or OFF.
Ref.CE-P620 03/10