ROHM SML-310JT, SML-310MT, SML-310PT, SML-310VT, SML-310YT Datasheet

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