SML-310 Series
LED lamps
Small, chip LEDs
SML-310 Series
The SLM-310 series are small, chip LEDs. The compact
and leadless design of these LEDs allows for high
mounting density.
!
Features
1) Four colors: red, orange, yellow and green.
2) Rectangular and leadless (1.6 x 0.8 mm, 0.8 mm
thick)
3) Can be mounted by automatic mounting.
!!!!
External dimensions
(Units : mm)
0.25
0.8
Electrode
1.2
1.6
+0.2
0
0.8
1.0
Cathode index
Tolerances are ±0.1
unless otherwise noted:
!!!!
Selection guide
Emitting color
Lens
Transparent clear
Red Orange Yellow Green
SML-310JT
SML-310LT
SML-310VT
SML-310DT
-
-
-
-
SML-310YT SML-310MT
SML-310PT
SML-310FT
!!!!
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
Bright red (L, J)
60
25
75
Other colors
55
20
60
Power dissipation
Forward current
Peak forward current
Reverse voltage
Operating temperature
Storage temperature
SML-310 Series
LED lamps
!!!!
Electrical and optical characteristics
(Ta=25°C)
Parameter
Forward voltage
Reverse
current
Type
SML-310
JT
LT
VT
DT
YT
MT
Red
Red
Red
Orange
Yellow
Green
1.9
Typ.
Color
1.75
2.0
2.0
2.1
2.2
2.5
Max.20I
F
(mA) Max.
IR(µ
A)
VR(V)
Cond.
Peak
wavelength
Typ.
λ
P
(
m)
IF(mA)
Cond.
Spectral line
half width
Typ.
∆λ
(
nm)
IF(mA)
Cond.Cond.V
F
(V)
Luminous intensity
Min. Typ. I
F
(mA)
Cond.I
V
(mcd)
100 4 14.0
3.6
1.4
2.2
2.2
3.6
40.0 20 660 20 25
25
40
40
40
40
20
20
20
20
20
20
20
20
20
20
20
660
650
610
585
570
20
20
20
20
20
10.0
4.0
6.3
6.3
16.0
4
4
4
4
4
100
100
100
100
100
20
20
20
20
20
2.5
2.8
2.8
2.8
2.8
FT Green 2.2 1.4 40 2020560204.04100202.8
PT Green 2.2 1.4 40 2020555204.04100202.8
!!!!
Directional pattern
ANGLE
(˚)
RELATIVE LUMINOUS INTENSITY
(%)
0 50 10050100
0
10
10
20
20
30
40
50
60
70
80
90
30
40
50
60
70
80
90
(X'-Y' )
ANGLE
(˚)
RELATIVE LUMINOUS INTENSITY
(%)
Fig. 1 Directional pattern
0 50 10050100
0
10
10
20
20
30
40
50
60
70
80
90
30
40
50
60
70
80
90
(X-Y)
!!!!
Electrical characteristics curves 1
(SML-310LT, SML-310JT) (Bright red)
FORWARD VOLTAGE : V
F
(V)
Fig. 2 Forward current
Fig. 2 vs. forward voltage
FORWARD CURRENT : I
F
(
mA
)
20
10
5.0
2.0
1.0
0.5
0.2
0.1
1.5 2.0 2.5 3.0
50
Ta=25˚C
SML-310LT
SML-310JT
1.4
1.2
1.0
0.8
0.6
0.4
40-20 200
60 80
1.6
RELATIVE LUMINOUS INTENSITY
I
F
= 20mA
SML-310LT
SML-310JT
CASE TEMPERATURE : Tc (˚C)
Fig. 3 Luminous intensity vs.
case temperature
2
1
0.5
0.2
0.1
0.05
0.02
0.01
0.5 1 2
51020 50
100
5
FORWARD CURRENT : I
F
(mA)
Fig. 4 Luminous intensity vs.
forward current
RELATIVE LUMINOUS INTENSITY
Ta=25˚C
SML-310JT
SML-310LT
SML-310 Series
LED lamps
1
1
2
3
4
5
6
10 10
3
10
2
10
4
10
5
Fig. 5 Maximum tolerable peak current
vs. pulse duration
PULSE DURATION : Tw
(µs)
RATIO of MAXIMUM TOLERABLE PEAK CURRENT
to MAXIMUM TOLERABLE DC CURRENT
IF
peak
M
ax.
IF
M
ax.
50kHz
20kHz
10kHz
5kHz
2kHz
1kHz
500Hz
200Hz
100Hz
3.0
2.5
2.0
1.5
1.0
0.5
0
0 102030405060
RELATIVE LUMINOUS INTENSITY
PEAK FORWARD CURRENT : IF
peak
(mA)
Fig. 6 Luminous intensity vs.
peak forward current
15%
20%
10%
5%
f =1kHz
DC
DF = 50%
20
10
0
010
20 30 40 50 70 8060 90
30
AMBIENT TEMPERATURE : Ta
(˚C)
Fig. 7 Maximum forward current
vs. ambient temperature
MAXIMUM FORWARD CURRENT : I
F
M
ax.
(mA)
!!!!
Electrical characteristics curves 2
(SML-310VT) (red)
20
10
5.0
2.0
1.0
0.5
0.2
0.1
1.51.0 2.0 2.5 3.0
50
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
0.6
0.4
40-20 200
60 80
1.6
RELATIVE LUMINOUS INTENSITY
I
F
= 20mA
CASE TEMPERATURE : Tc (˚C)
Fig. 9 Luminous intensity vs.
case temperature
2
1
0.5
0.2
0.1
0.05
0.02
0.01
0.5 1 2
51020 50
100
5
FORWARD CURRENT : I
F
(mA)
Fig. 10 Luminous intensity vs.
forward current
RELATIVE LUMINOUS INTENSITY
Ta=25˚C
1
1
2
3
4
5
6
10 10
3
10
2
10
4
10
5
Fig. 11 Maximum tolerable peak current
vs. pulse duration
PULSE DURATION : Tw
(µs)
RATIO of MAXIMUM TOLERABLE PEAK CURRENT
to MAXIMUM TOLERABLE DC CURRENT
I
F
peak
M
ax.
I
F
M
ax.
50kHz
20kHz
10kHz
5kHz
2kHz
1kHz
500Hz
200Hz
100Hz
3.0
2.5
2.0
1.5
1.0
0.5
0
0 102030405060
RELATIVE LUMINOUS INTENSITY
PEAK FORWARD CURRENT : I
F peak
(mA)
f =1kHz
DC
15%
20%
10%
5%
Fig. 12 Luminous intensity vs.
peak forward current
DF = 50%
20
10
0
010
20 30 40 50 70 8060 90
30
AMBIENT TEMPERATURE : Ta
(˚C)
Fig. 13 Maximum forward current
vs. ambient temperature
MAXIMUM FORWARD CURRENT : I
F
M
ax.
(mA)
SML-310 Series
LED lamps
!!!!
Electrical characteristics curves 3
(SML-310DT) (orange)
FORWARD VOLTAGE : V
F
(V)
Fig. 14 Forward current vs.
forward voltage
FORWARD CURRENT : I
F
(
mA
)
20
10
5.0
2.0
1.0
0.5
0.2
0.1
1.5 2.0 2.5 3.0
50
Ta=25˚C
1.4
1.2
1.0
0.8
0.6
0.4
40-20 200
60 80
1.6
RELATIVE LUMINOUS INTENSITY
I
F
= 20mA
CASE TEMPERATURE : Tc (˚C)
Fig. 15 Luminous intensity vs.
case temperature
2
1
0.5
0.2
0.1
0.05
0.02
0.01
0.5 1 2
51020 50
100
5
FORWARD CURRENT : I
F
(mA)
Fig. 16 Luminous intensity vs.
forward current
RELATIVE LUMINOUS INTENSITY
Ta=25˚C
1
1
2
3
4
5
6
10 10
3
10
2
10
4
10
5
Fig. 17 Maximum tolerable peak current
vs. pulse duration
PULSE DURATION : Tw
(µs)
RATIO of MAXIMUM TOLERABLE PEAK CURRENT
to MAXIMUM TOLERABLE DC CURRENT
I
F
peak
M
ax.
I
F
M
ax.
50kHz
20kHz
10kHz
5kHz
2kHz
1kHz
500Hz
200Hz
100Hz
3.0
2.5
2.0
1.5
1.0
0.5
0
0 102030405060
RELATIVE LUMINOUS INTENSITY
PEAK FORWARD CURRENT : IF
peak
(mA)
f =1kHz
DC
15%
20%
10%
5%
Fig. 18 Luminous intensity vs.
peak forward current
DF = 50%
20
10
0
010
20 30 40 50 70 8060 90
30
AMBIENT TEMPERATURE : Ta
(˚C)
Fig. 19 Maximum forward current
vs. ambient temperature
MAXIMUM FORWARD CURRENT : I
F
M
ax.
(mA)
!!!!
Electrical characteristics curves 4
(SML-310YT) (yellow)
FORWARD VOLTAGE : V
F
(V)
Fig. 20 Forward current vs.
forward voltage
FORWARD CURRENT : I
F
(
mA
)
20
10
5.0
2.0
1.0
0.5
0.2
0.1
1.5 2.0 2.5 3.0
50
Ta=25˚C
1.4
1.2
1.0
0.8
0.6
0.4
40-20 200
60 80
1.6
RELATIVE LUMINOUS INTENSITY
IF=20mA
Fig. 21 Luminous intensity vs.
case temperature
CASE TEMPERATURE : Tc
(˚C)
2
1
0.5
0.2
0.1
0.05
0.02
0.01
0.5 1 2
51020 50
100
5
FORWARD CURRENT : I
F
(mA)
Fig. 22 Luminous intensity vs.
forward current
RELATIVE LUMINOUS INTENSITY
Ta=25˚C
SML-310 Series
LED lamps
1
1
2
3
4
5
6
10 10
3
10
2
10
4
10
5
Fig. 23 Maximum tolerable peak current
vs. pulse duration
PULSE DURATION : Tw
(µs)
RATIO of MAXIMUM TOLERABLE PEAK CURRENT
to MAXIMUM TOLERABLE DC CURRENT
IF
peak
M
ax.
IF
M
ax.
50kHz
20kHz
10kHz
5kHz
2kHz
1kHz
500Hz
200Hz
100Hz
3.0
2.5
2.0
1.5
1.0
0.5
0
0 102030405060
RELATIVE LUMINOUS INTENSITY
PEAK FORWARD CURRENT : I
F peak
(mA)
f =1kHz
DC
15%
20%
10%
5%
Fig. 24 Luminous intensity vs.
peak forward current
DF = 50%
20
10
0
010
20 30 40 50 70 8060 90
30
AMBIENT TEMPERATURE : Ta
(˚C)
Fig. 25 Maximum forward current
vs. ambient temperature
MAXIMUM FORWARD CURRENT : I
F
M
ax.
(mA)
!!!!
Electrical characteristics curves 5
(SML-310MT, SML-310PT, SML-310FT) (green)
FORWARD VOLTAGE : V
F
(V)
Fig. 26 Forward current vs.
forward voltage
FORWARD CURRENT : I
F
(
mA
)
20
10
5.0
2.0
1.0
0.5
0.2
0.1
1.5 2.0 2.5 3.0
50
Ta=25˚C
1.4
1.2
1.0
0.8
0.6
0.4
40-20 200
60 80
1.6
RELATIVE LUMINOUS INTENSITY
I
F
= 20mA
Fig. 27 Luminous intensity vs.
case temperature
CASE TEMPERATURE : Tc
(˚C)
SML-310PT
SML-310MT,FT
2
1
0.5
0.2
0.1
0.05
0.02
0.01
0.5 1 2
51020 50
100
5
FORWARD CURRENT : I
F
(mA)
Fig. 28 Luminous intensity vs.
forward current
RELATIVE LUMINOUS INTENSITY
Ta=25˚C
SML-310MT,FT
SML-310PT
1
1
2
3
4
5
6
10 10
3
10
2
10
4
10
5
Fig. 29 Maximum tolerable peak current
vs. pulse duration
PULSE DURATION : Tw
(µs)
RATIO of MAXIMUM TOLERABLE PEAK CURRENT
to MAXIMUM TOLERABLE DC CURRENT
I
F
peak
M
ax.
I
F
M
ax.
50kHz
20kHz
10kHz
5kHz
2kHz
1kHz
500Hz
200Hz
100Hz
3.0
2.5
2.0
1.5
1.0
0.5
0
0 102030405060
RELATIVE LUMINOUS INTENSITY
PEAK FORWARD CURRENT : I
F peak
(mA)
f =1kHz
DC
15%
20%
10%
5%
Fig. 30 Luminous intensity vs.
peak forward current
DF = 50%
20
10
0
010
20 30 40 50 70 8060 90
30
AMBIENT TEMPERATURE : Ta
(˚C)
Fig. 31 Maximum forward current
vs. ambient temperature
MAXIMUM FORWARD CURRENT : I
F
M
ax.
(mA)
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