SML-521 Series
Light Emitting Diodes
Two-color chip LEDs, super small type
SML-521 Series
The SML-521 Series are two-color chip LEDs, super small type. Due to its small size in dimension and thickness it is
suitable for portable electricity which mainly works under battery. Also for high density mounting.
!
Features
1) 1.5×1.3mm Super small package
2) Thickness of only 0.6mm
3) Green-red, green-orange green-
yellow 3types are available
!
External dimensions
(Units : mm)
1.5
1.1
RED, ORANGE
YELLOW
2
1
2
1
0.45±0.05
4
3
(0.6)
1.3
4
3
GREEN
(0.225)
0.6
0.6
Cathode index
1.1
0.
2
1.6
Electrode
R
0.45±0.05
(0.18)
Tolerances are
±0.1
unless otherwise noted:
!
Selection guide
Emitting color
Red/Green
Lens
Milky white
SML-521MUW SML-521MDW SML-521MYW
Orange/Green Yellow/Green
SML-521 Series
Light Emitting Diodes
!
Absolute maximum ratings
(Ta=25°C)
Parameter
Power dissipation
Forward current
Peak forward current
Reverse voltage
Operating temperature
Storage temperature
Symbol
M
P
D
I
F
I
FP
V
R
Topr
Tstg
70
25
60
4
−30~+85
−40~+85
Limits
U, D, Y
50
20
mW
mA
mA
∗
V
°C
°C
Unit
∗
Pulse width 1ms Duty 1/5
!
Electrical and optical characteristics
(Ta=25°C)
Parameter
Color
Type
SML-521MUW
Red
Green
SML-521MDW
Orange
Green
Yellow
Green
Forward voltage
V
F
(V)
Typ.
1.9
2.2
1.9
2.2
1.9
2.2
2.5
2.8
2.5
2.8
2.5
2.8
20
100
4
Reverse
current
Luminous intensity
I
V
(mcd)
Min.
22
5.6
22
5.6
22
5.6
Peak
wavelength
Spectral line
half width
Cond. I
R
(µA) Cond.
Cond.
λ
P
(mm) Cond.
∆λ
(mm)
Cond.
Typ. I
F
(mA)
630
570
20
611
570
590
570
20
Typ. I
F
(mA)
18
40
16
40
15
40
20
Max. I
F
(mA) Max. V
R
(V)
Typ. I
F
(mA)
40
16
40
16
40
16
SML-521MYW
!
Directional pattern
green
red
orange
yellow
30
40
50
60
70
80
90
100
ANGULAR DISPLACEMENT (degrees)
20
10
0
10
20
30
40
50
60
70
80
90
100
70
80
90
100
green
60
50
green
ANGULAR DISPLACEMENT (degrees)
red
orange
yellow
0
10
10
20
20
30
30
40
40
50
60
70
80
90
100
red
orange
yellow
50
0
50
50
0
50
RELATIVE LUMINOUS INTENSITY
RELATIVE LUMINOUS INTENSITY
Fig.1 Directional pattem
SML-521 Series
Light Emitting Diodes
!
Electrical characteristic curves 1
(RED / ORANGE / YELLOW)
100.0
FORWARD CURRENT : I
F
(mA)
1.4
1.2
1.0
0.8
0.6
0.4
0.2
−20
RELATIVE LUMINOUSE INTENSITY
Ta=25°C
RELATIVE LUMINOUS INTENSITY
1.6
I
F
=20mA
1000
Ta=25°C
10.0
100
1.0
10
0.1
1.5
2.0
FORWARD VOLTAGE : V
F
(V)
2.5
0
20
40
60
80
1
0
5
10
15
20
25
30
CASE TEMPERATURE : T
C
(°C)
FORWARD CURRENT : I
F
(mA)
Fig.2 Forward current
vs. forward voltage
Fig.3 Luminous intensity
vs. case temperature
Fig.4 Luminous intensity
vs. forward current
RELATIVE LUMINOUS INTENSITY (%)
f=1kHz
DC
200
MAXIMUM FORWARD CURRENT :
(mA)
10
250
30
IFP Max / IF Max
500Hz
200Hz
100Hz
50kHz
20kHz
10kHz
5kHz
2kHz
1kHz
150
DF=50%
100
DF=20%
50
DF=15%
DF=10%
DF=5%
0
0
10
20
30
40
50
60
20
3
10
1
1
0
10
100
1000
10000
−20
0
20
40
60
80
100
PULSE DURATION : t
W
(µs)
PEAK FORWARD CURRENT :
(mA)
AMBIENT TEMPERATURE : Ta
(°C)
Fig.5 Maximum tolerable peak current
vs. pulse duration
Fig.6 Luminous intensity
vs. peak forward current
Fig.7 Derating
!
Electrical characteristic curves 2
(GREEN)
100.0
FORWARD CURRENT : I
F
(mA)
1.4
1.2
1.0
0.8
0.6
0.4
0.2
−20
RELATIVE LUMINOUSE INTENSITY
Ta=25°C
RELATIVE LUMINOUS INTENSITY
1.6
I
F
=20mA
1000
Ta=25°C
100
10.0
10
1.0
1.5
2.0
2.5
3.0
0
20
40
60
80
1
0
5
10
15
20
25
30
FORWARD VOLTAGE : V
F
(V)
CASE TEMPERATURE : T
C
(°C)
FORWARD CURRENT : I
F
(mA)
Fig.8 Forward current
vs. forward voltage
Fig.9 Luminous intensity
vs. case temperature
Fig.10 Luminous intensity
vs. forward current
SML-521 Series
Light Emitting Diodes
RELATIVE LUMINOUS INTENSITY (%)
f=1kHz
DC
200
MAXIMUM FORWARD CURRENT :
(mA)
10
250
30
IFP Max / IF Max
150
DF=50%
20
500Hz
200Hz
100Hz
50kHz
20kHz
10kHz
5kHz
2kHz
1kHz
100
DF=20%
50
DF=15%
DF=10%
DF=5%
0
0
10
20
30
40
50
60
2.4
10
1
1
0
10
100
1000
10000
−20
0
20
40
60
80
100
PULSE DURATION : t
W
(µs)
PEAK FORWARD CURRENT :
(mA)
AMBIENT TEMPERATURE : Ta
(°C)
Fig.11 Maximum tolerable peak current
vs. pulse duration
Fig.12 Luminous intensity
vs. peak forward current
Fig.13 Derating
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