LED SPECIFICATION
Part No.
551LW7C
Features
Single color
High bright output
Low power consumption
High reliability and long life
Descriptions
Dice material
Device Outline
GaInN
¶5mm Round Flat Type
Emitting Color Super Bright White
Lens Type Water Clear
NOTE:
All dimensions are millimetres.
Tolerance is +/-0.25mmunless otherivise noted
HALF LIGHT PATTERN:
Page: 1 of 4
LED SPECIFICATION
Part No.
Absolute maximum ratings ˜ = 25 ¯
˜Ta
Parameter
Symbol
Test Condition
Value
551LW7C
Unit
Min.
Max.
Reverse Voltage
V
R
I
R
= 30 › A
5
--
V
Forward Current
I
F
----
----
30
mA
Power Dissipation
Pd
----
----
108
mW
Pulse Current
Ipeak
Duty=0.1mS ¨1kHz
----
100
mA
Operating Temperature
Topr
----
-20
+85
Storage Temperature
Tstr
----
-25
+100
Electrical and optical characteristics ˜ = 25 ¯
˜Ta
Parameter
Symbol
Test Condition
Value
Min.
Typ.
Max.
Unit
Forward Voltage
V
F
I
F
= 20mA
----
3.2
3.6
V
Reverse Current
I
R
V
R
= 5V
----
----
30
› A
Luminous Intensity
I
V
I
F
= 20mA
100
BIN
200
mcd
Viewing Angle
2 '
1/2
I
F
= 20mA
130
140
150
Deg.
Page: 2 of 4
LED SPECIFICATION
Part No.
Chromaticity Coordinates Ranks
(IF=20mA
Wa1
X
Y
X
Y
X
Y
X
Y
X
Y
X
Y
0.243
0.200
0.246
0.236
0.264
0.267
0.287
0.295
0.306
0.332
0.330
0.360
0.215
0.230
0.230
0.250
0.248
0.286
0.283
0.305
0.298
0.350
0.321
0.379
0.230
0.250
0.248
0.286
0.275
0.321
0.330
0.360
0.321
0.379
0.366
0.419
0.263
0.220
0.264
0.267
0.283
0.305
0.330
0.339
0.330
0.360
0.361
0.385
551LW7C
Ta=25
X
Y
X
Y
X
Y
X
Y
X
Y
X
Y
)
0.263
0.220
0.280
0.248
0.296
0.276
0.283
0.305
0.330
0.318
0.356
0.351
0.246
0.236
0.264
0.267
0.287
0.295
0.275
0.321
0.330
0.360
0.366
0.419
0.264
0.267
0.283
0.305
0.330
0.339
0.298
0.350
0.361
0.385
0.391
0.436
0.280
0.248
0.296
0.276
0.330
0.318
0.306
0.332
0.356
0.351
0.380
0.381
Wa2
Wa3
Wb1
Wb2
Wc1
Wc2
Wc3
Wc4
Wd1
Wd2
Wf
CIE 1931 Chromaticity diagram
Y
IF=20mA
Ta=25¡ ã
C
W
W
W
W
Wf
W
W
W
W
W
W
W
x
Page: 3 of 4
LED SPECIFICATION
Part No.
Typical electrical/optical characteristic curves
50
551LW7C
FORWARD CURRENT Vs
FORWARD VOLTAGE
2.5
LUMINOUS INTENSITY Vs.
FORWARD CURRENT
Forward Current(mA)
40
30
20
10
0
2.0
2.4 2.8 3.2 3.6
Forward Voltage(V)
4.0
Luminous Intensity
Relative Value at IF=20mA
2.0
1.5
1.0
0.5
0
0
10
20
40
30
IF-Forward Current (mA)
50
Relative Luminous Intensity
50
FORWARD CURRENT
DERATING CURVE
LUMINOUS INTENSITY Vs.
AMBIENT TEMPERATURE
2.5
2.0
1.5
1.0
0.5
0
Forward Current(mA)
40
30
20
10
0
0
20
40
60
80
100
!"#
" $
Ambient Temperature T
A
(¡ æ
)
-40
-20
0
20
60
80
40
Ambient Temperature T
A
(¡ æ
)
100
Page: 4 of 4
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