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1. Scope of Application
These specifications are applied to the chip type LED lamp , model CL-L253E-MC7W1-C.
2. Part code
C L - L 2 5 3 E - M C 7 W 1 - C
C L - L 2 5 3 E - M C 7 W 1 - CC L - L 2 5 3 E - M C 7 W 1 - C
C L - L 2 5 3 E - M C 7 W 1 - C
Series
L253E : White power LED for general lighting.
Special specifications
Watt class
C7 : 7 watt package.
Lighting color
W1 : Compliance with ANSI C78.377-2008,
3-Step MacAdam ellipse,
Correlated Color Temperature 4000K
Symbol
CITILED
Name CL-L253E-MC7L1-C
DATA SHEET
CITIZEN ELECTRONICS CO.,LTD. JAPAN
Ref.CE-P989 03/11
2/10
3. Outline drawing
4. Performance
( 1 ) Absolute Maximum Rating
Symbol Unit
Power Dissipation P
D
W
Forward Current I
F
mA
Forward Pulse Current I
FP
mA *1
Reverse Current I
R
mA
Operating Temperature T
OP
C
Storage Temperature T
ST
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
Symbol
Parameter Rating Value
10.4
490
CITILED
Name CL-L253E-MC7L1-C
700
-30 ~ +85
150
-40 ~ +100
1
DATA SHEET
CITIZEN ELECTRONICS CO.,LTD. JAPAN
Anode
Cathode
Resin
Tc Measurement Point
Cathode Mark
Marking 1
Marking 2
It has a protection device built in as a
protection circuit against static electricity.
Unit : mm
Tolerances unless otherwise specified : ±0.3
Protection
device
AnodeCathode
Marking 1 : Serial No.
Marking 2 :E M 7 W 1 C
Color
Watt
Ra
W1
7 : 7W
M : typ.85
Ref.CE-P989 03/11
3/10
( 2 ) Electro-optical Characteristics
( Tc=25 C )
Symbol
Condition
Min.
Typ.
Max.
Unit
V
F
I
F
=420mA
17.5 18.6 21.0 V
Φv
IF=420mA
542 603 - lm
Ra
IF=420mA
82 (85) - -
Rj-c
Junction-case
- (3.0) - C/W
Chromaticity coordinates ( Condition : I
F
=420mA ,Tc=25 C )
Note: The tolerance of measurement at our tester is V
F
±3% , Φv±10% , Chromaticity(x,y)±0.005.
and Ra+/- 2.
Symbol
CITILED
Name CL-L253E-MC7L1-C
DATA SHEET
Parameter
Forward Voltage
Luminous Flux
General Color
Rendering Index
Thermal Resistance
CITIZEN ELECTRONICS CO.,LTD. JAPAN
Reference (ANSI C78.377)
x y x y
0.3818 0.3797 Center 0.3818 0.3797 (3985K)
a 0.4006 0.4044
a 0.00939 b 0.3736 0.3874
b 0.00402 c 0.3670 0.3578
θ° 54.00 d 0.3898 0.3716
*Color region stay within MacAdam "3-step" ellipse from the chromaticity center.
*The chromaticity center refers to ANSI C78.377:2008.
Please refer to ANSI C78.377 for the chromaticity center.
*θ is the angle between the major axis of the ellipse and the x-axis,
  and a and b are the major and minor semi-axes of an ellipse. (Ref. IEC 60081:1997 AnnexD)
W1
Color rank
Color rank
W1
Center
Oval parameter
x-y chart-CIE1931
0.35
0.36
0.37
0.38
0.39
0.40
0.41
0.36 0.37 0.38 0.39 0.40 0.41
x
y
Color region
Color region
(ANSI)
3800K
4400K 4000K 3600K
4200K
Ref.CE-P989 03/11
4/10
5. Characteristics
Forward Current vs. Forward Voltage
Forward Current vs. Relative Luminous Flux
Case Temperature vs. Chromaticity Coordinate
Symbol
CITILED
Name CL-L253E-MC7L1-C
DATA SHEET
Case Temperature vs. Allowable Forward Current
CITIZEN ELECTRONICS CO.,LTD. JAPAN
-0.020
-0.015
-0.010
-0.005
0.000
0.005
0.010
0.015
0.020
0 100 200 300 400 500
I
F
[mA]
∆x, ∆y
∆x
∆y
15.0
16.0
17.0
18.0
19.0
20.0
21.0
0 100 200 300 400 500
I
F
[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]
∆x, ∆y
∆x
∆y
I
F
=420mA
Tc=25C
Tc=25C
0%
20%
40%
60%
80%
100%
120%
140%
0 100 200 300 400 500
I
F
[mA]
Relative Luminous Flux [a.u.]
Tc=25C
Ref.CE-P989 03/11
5/10
Case Temperature vs. Forward Voltage
Case Temperature vs. Relative Luminous Flux
Spectrum
Symbol
DATA SHEET
Case Temperature vs. Allowable Forward Current
CITILED
Name CL-L253E-MC7L1-C
CITIZEN ELECTRONICS CO.,LTD. JAPAN
15.0
16.0
17.0
18.0
19.0
20.0
21.0
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%
20%
40%
60%
80%
100%
120%
350 450 550 650 750 850
λ [nm]
Relative Emission Intensity [a.u.]
0
100
200
300
400
500
0 25 50 75 100 125 150
Tc [C]
I
F
[mA]
I
F
=420mA I
F
=420mA
Tc=25C,I
F
=420mA
Ref.CE-P989 03/11
6/10
6. Reliability
(1) Details of the tests
(2) Judgment Criteria of Failure for Reliability Test (Ta=25 C)
Symbol
V
F
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-L253E-MC7W1-C.
Symbol
Measuring Item
Moisture-proof Test 60 C, 90 %RH for 1000 hours
Continuous Operation Test
Test Item
Thermal Shock Test
Measuring Condition
Test Condition
DATA SHEET
Low Temperature Storage Test
Ta=25 C,I
F
=480 mA× 1000 hours(with Al-fin)
Ta=50 C,I
F
=480 mA× 1000 hours(with Al-fin)
High Temperature Storage Test
100 C × 1000 hours
returned to the normal ambient conditions after the completion of each test.
I
F
=480mA
Forward Voltage
< S × 0.85
-40 C × 30 minutes – 100 C × 30 minutes, 100 cycle
Judgment Criteria for Failure
Note: Measurement shall be taken between 2 hours and 24 hours, and the test pieces should be
Total Luminous Flux
CITILED
Name CL-L253E-MC7L1-C
-40 C × 1000 hours
> U × 1.1
I
F
=480mA
CITIZEN ELECTRONICS CO.,LTD. JAPAN
Ref.CE-P989 03/11
7/10
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 × 210 × 14.6mm / Materials: Electrically conductive PS)
Symbol
DATA SHEET
CITIZEN ELECTRONICS CO.,LTD. JAPAN
CITILED
Name CL-L253E-MC7L1-C
< Packing figure >
Product 50pcs/tray
310
210
14.6
Product 48pcs/tray
< Example of indication label >
1. TYPE e.g. CL-L253E-MC7W1-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
CUSTOMER
PASS
CITIZEN ELECTRONICS
TYPE
P.NO
LOTNo
Q'ty
CL-L253E-MC7W1-C
xxx
03D001
240pcs.
---(1)
---(2)
---(3)
---(4)
Ref.CE-P989 03/11
8/10
8. 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.
4. Insulation between the terminal section and the heat sink section of the LED is not covered
by warranty. With regard to insulation after this product has been assembled in an apparatus,
preventive action should be carried out by the customer.
5. For fixing this product to the outer heat sink, heat grease should be applied to the whole rear
surface so that the product can dissipate heat as a whole. Please pay attention to avoid product
deformation when conducting the clamping operation with heat grease in sheet form.
6. 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>
Symbol
CITILED
Name CL-L253E-MC7L1-C
Condition
DATA SHEET
Judgmental criterion
I
F
=7mA/PKG
No-lighting in entire block making
up parallel circuit is unacceptable
As the connection status could vary depending on materials of outer heat sink,
CITIZEN ELECTRONICS CO.,LTD. JAPAN
Resin portion (Shaded area)
Thermal conduction materials
(Insulation)
Outer heart sink
Spring Washer (φ6mm)
M3screw (Insulation)
Plane washer (φ6mm)
L251 consists of seven blocks.
13.08 mm
12.64 mm
Ref.CE-P989 03/11
9/10
8. Precautions (continued)
Symbol
- As this product is designed with consideration of the heat release property of module,
a heat release design is required to use this product efficiently.
DATA SHEET
- Factors responsible for an increase in temperature include heat generation attributed to
Please ensure that heat generation is not in excess of the absolute maximum rating.
(Refer to 4-1 Performance)
8. Please be aware that this product should not come into contact with any other parts
in assembled status.
7. Lighting at a low current
A minimum current value of lighting of all dice is 35mA.
When a minimum current is applied, LED dice may look different in their brightness due to
350°C or less within 3.5 seconds for one land.
(Recommended condition in a case of lead-free solder condition)
- No external force shall be applied to resin part during soldering.
- For soldering correction
- Regarding soldering correction, above conditions shall be used.
12. Other
- This product complies with RoHS directives.
- Contacts number of soldering bit should be within twice for each terminal as a correction.
* Citizen Electronics cannot guarantee if usage exceeds this recommended conditions.
Please use it after sufficient verification is carried out on your own risk if necessary.
the individual difference of the LED element, and it is not a failed product.
10. Heat generation
- Manual soldering
ambient temperature conditions or power dissipation. Thus, drive conditions should be
11. Recommended soldering condition (This product is not adaptable to reflow process)
9. Drive circuit
taken into consideration, depending on ambient temperature (Ta).
- Soldering shall be implemented using a soldering bit of 40W or less with a temperature
CITILED
Name CL-L253E-MC7L1-C
- Next process of soldering should be carried out after the product has returned to ambient
- A constant current circuit is recommended as a drive circuit.
And when two or more LED packages are connected, the series connection
between each package is recommended.
- 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.
CITIZEN ELECTRONICS CO.,LTD. JAPAN
Ref.CE-P989 03/11
10/10
Such information, however, is subject to change without any prior notice.
included in this document,
business interruption and loss of data, and disclaims any and all express or implied warranties
and for providing adequate designs and safeguards to minimize risk and avoid situations
Symbol
DATA SHEET
CITIZEN ELECTRONICS CO.,LTD. JAPAN
9. Precautions with regard to product use
please confirm the latest product information with a CITIZEN ELECTRONICS' sales office,
and formal specifications must be exchanged and signed by both parties prior to mass production.
products are used as intended. CITIZEN ELECTRONICS neither makes warranties or
representations with respect to the accuracy or completeness of the information contained
in this document nor grants any license to any intellectual property rights or any other
1. This document is provided for reference purposes only so that CITIZEN ELECTRONICS'
a result of errors or omissions in the information included in this document.
but CITIZEN ELECTRONICS assumes no liability whatsoever for any damages incurred as
rights of CITIZEN ELECTRONICS or any third party with respect to the information
Before purchasing or using any CITIZEN ELECTRONICS' products listed in this document,
in this document.
2. All information included in this document such as product data, diagrams, charts,
is current as of the date this document is issued.
3. CITIZEN ELECTRONICS has used reasonable care in compiling the information
4. Absent
written signed agreement, except as provided in the relevant terms and conditions of
or conditions of merchantability, fitness for a particular purpose, accuracy of information,
and conditions related to sale, use of product, or information, including warranties
or no infringement.
CITILED
Name CL-L253E-MC7L1-C
in which a malfunction or failure of a product could cause loss of human life,
5. Though CITIZEN ELECTRONICS works continually to improve products' quality and reliability,
sale for product, and to the maximum extent allowable by law, CITIZEN ELECTRONICS
assumes no liability whatsoever, including without limitation, indirect, consequential, special,
or incidental damages or loss, including without limitation, loss of profits, loss of opportunities,
6. Please contact CITIZEN ELECTRONICS' sales office if you have any questions regarding
the information contained in this document, or if you have any other inquiries.
products can malfunction or fail. Customers are responsible for complying with safety standards
CITIZEN ELECTRONICS assumes no liability for customers' product design or applications.
bodily injury or damage to property, including data loss or corruption.
In addition, customers are also responsible for determining the appropriateness of
use of any information contained in this document such as application cases not only with
evaluating by their own but also by the entire system.
Ref.CE-P989 03/11