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 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) 1.5x1.3mm Super small package 2) Thickness of only 0.6mm 3) Green-red, green-orange greenyellow 3types are available
!External dimensions (Units : mm)
1.5 1.1 RED, ORANGE YELLOW
2
1
2
1
0.450.05
4
3
(0.6)
1.3
4
3
GREEN (0.225)
0.6
0.6 Cathode index
1.1
R 0.
2
1.6
Electrode
0.450.05
(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=25C)
Parameter Power dissipation Forward current Peak forward current Reverse voltage Operating temperature Storage temperature Symbol M PD IF IFP VR 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=25C)
Parameter Color Type SML-521MUW Red Green SML-521MDW Orange Green Yellow Green Forward voltage VF (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 IV (mcd) Min. 22 5.6 22 5.6 22 5.6 Peak wavelength Spectral line half width
Cond. IR (A) Cond.
Cond. P (mm) Cond. (mm) Cond. Typ. IF (mA) 630 570 20 611 570 590 570 20 Typ. IF (mA) 18 40 16 40 15 40 20
Max. IF (mA) Max. VR (V)
Typ. IF (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 : IF (mA)
1.4 1.2 1.0 0.8 0.6 0.4 0.2 -20
RELATIVE LUMINOUSE INTENSITY
Ta=25C
RELATIVE LUMINOUS INTENSITY
1.6
IF=20mA
1000
Ta=25C
10.0
100
1.0
10
0.1 1.5
2.0 FORWARD VOLTAGE : VF (V)
2.5
0
20
40
60
80
1 0
5
10
15
20
25
30
CASE TEMPERATURE : TC (C)
FORWARD CURRENT : IF (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 : tW (s)
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 : IF (mA)
1.4 1.2 1.0 0.8 0.6 0.4 0.2 -20
RELATIVE LUMINOUSE INTENSITY
Ta=25C
RELATIVE LUMINOUS INTENSITY
1.6
IF=20mA
1000
Ta=25C
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 : VF (V)
CASE TEMPERATURE : TC (C)
FORWARD CURRENT : IF (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 : tW (s)
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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