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)
1.3
0.45±0.05
1.5
(0.6)
1.1
0.6
(0.18)
0.6
(0.225)
Cathode index
R0.2
1.6
0.45±0.05
1.1
Electrode Tolerances are ±0.1
unless otherwise noted:
RED, ORANGE
YELLOW
GREEN
12
34
12
34
!
!!
!Selection guide
Emitting color
Lens
Milky white
Red/Green
SML-521MUW
Orange/Green
SML-521MDW
Yellow/Green
SML-521MYW
SML-521 Series
Light Emitting Diodes
!
!!
!Absolute maximum ratings (Ta=25°C)
∗
Pulse width 1ms Duty 1/5
Parameter Symbol
P
D
I
F
I
FP
V
R
Topr
Tstg
Limits
4
−30~+85
−40~+85
Unit
mW
mA
mA∗
V
°C
°C
M
70
25
U, D, Y
50
20
60
Power dissipation
Forward current
Peak forward current
Reverse voltage
Operating temperature
Storage temperature
!
!!
!Electrical and optical characteristics (Ta=25°C)
Parameter Forward voltage Reverse
current
Type
SML-521MUW Red 1.9
Typ.
Color
2.5
2.8
2.5
2.8
2.5
2.8
Max.
20
I
F
(mA) Max.
IR (µA)
V
R
(V)
Cond.
Peak
wavelength
Typ.
λ
P
(mm)
I
F
(mA
)
Cond.
Spectral line
half width
Typ.
∆λ (mm)
I
F
(mA
)
Cond.Cond.V
F
(V)
Luminous intensity
Min. Typ. I
F
(mA
)
Cond.I
V
(mcd
)
100 4
22 40
20
630
20
18
20
Green 2.2 5.6 16 570 40
Orange 1.9 22 40 611 16
SML-521MDW Green 2.2 5.6 16 570 40
SML-521MYW Yellow 1.9 22 40 590 15
Green 2.2 5.6 16 570 40
!
!!
!Directional pattern
ANGULAR DISPLACEMENT (degrees)
RELATIVE LUMINOUS INTENSITY
0 50 10050100
010
10 20
20 30
40
50
60
70
80
90
30
40
50
60
70
80
90
ANGULAR DISPLACEMENT (degrees)
RELATIVE LUMINOUS INTENSITY
Fig.1 Directional pattem
0 50 10050100
010
10 20
20 30
40
50
60
70
80
90
30
40
50
60
70
80
90
green
red
orange
yellow
green
green
red
orange
yellow
red
orange
yellow
SML-521 Series
Light Emitting Diodes
!
!!
!Electrical characteristic curves 1 (RED / ORANGE / YELLOW)
10.0
1.0
0.1
1.5 2.0 2.5
100.0
FORWARD VOLTAGE : V
F
(V)
Fig.2 Forward current
vs. forward voltage
FORWARD CURRENT : I
F
(mA)
Ta=25°C
1.4
1.2
1.0
0.8
0.4
0.6
0.2 40−20 200 60 80
1.6
RELATIVE LUMINOUS INTENSITY
I
F
=20mA
Fig.3 Luminous intensity
vs. case temperature
CASE TEMPERATURE : TC
(°C)
100
10
1015202510530
1000
FORWARD CURRENT : I
F
(mA)
Fig.4 Luminous intensity
vs. forward current
RELATIVE LUMINOUSE INTENSITY
Ta=25°C
1101 100 1000 10000
10
3
PULSE DURATION : tW
(µs)
Fig.5 Maximum tolerable peak current
vs. pulse duration
IFP Max / IF Max
100Hz
200Hz
500Hz
1kHz
2kHz
5kHz
10kHz
20kHz
50kHz
250
200
150
100
50
00 102030405060
RELATIVE LUMINOUS INTENSITY (%)
PEAK FORWARD CURRENT :
(mA)
Fig.6 Luminous intensity
vs. peak forward current
DF=20%
DF=15%
DF=10%
DF=5%
f=1kHz
DC
DF=50%
20
10
0−20 0 40 6020 80 100
30
AMBIENT TEMPERATURE : Ta
(°C)
Fig.7 Derating
MAXIMUM FORWARD CURRENT :
(mA)
!
!!
!Electrical characteristic curves 2 (GREEN)
10.0
1.0
1.5 2.0 2.5 3.0
100.0
FORWARD VOLTAGE : V
F
(V)
Fig.8 Forward current
vs. forward voltage
FORWARD CURRENT : I
F
(mA)
Ta=25°C
1.4
1.2
1.0
0.8
0.4
0.6
0.2 40−20 200 60 80
1.6
RELATIVE LUMINOUS INTENSITY
I
F
=20mA
Fig.9 Luminous intensity
vs. case temperature
CASE TEMPERATURE : TC
(°C)
100
10
1015202510530
1000
FORWARD CURRENT : I
F
(mA)
Fig.10 Luminous intensity
vs. forward current
RELATIVE LUMINOUSE INTENSITY
Ta=25°C
SML-521 Series
Light Emitting Diodes
1101 100 1000 10000
10
2.4
PULSE DURATION : tW
(µs)
Fig.11 Maximum tolerable peak current
vs. pulse duration
IFP Max / IF Max
100Hz
200Hz
500Hz
1kHz
2kHz
5kHz
10kHz
20kHz
50kHz
250
200
150
100
50
00 102030405060
RELATIVE LUMINOUS INTENSITY (%)
PEAK FORWARD CURRENT :
(mA)
Fig.12 Luminous intensity
vs. peak forward current
DF=20% DF=15%
DF=10%
DF=5%
f=1kHz
DC
DF=50%
20
10
0−20 0 40 6020 80 100
30
AMBIENT TEMPERATURE : Ta
(°C)
Fig.13 Derating
MAXIMUM FORWARD CURRENT :
(mA)
