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

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.

SML-310 Series

!External dimensions (Units : mm)

1.6+00.2

1.2

0.8

0.8

0.25

Cathode index

Electrode

1.0

Tolerances are ±0.1 unless otherwise noted:

!Selection guide

Emitting color	Red	Orange	Yellow	Green
Lens
	SML-310JT SML-310DT SML-310YT SML-310MT
Transparent clear	SML-310LT	-	-	SML-310PT
	SML-310VT	-	-	SML-310FT

!Absolute maximum ratings (Ta=25°C)

Parameter	Symbol	Limits			Unit
		Bright red (L, J)		Other colors
Power dissipation	PD	60		55	mW
Forward current	IF	25		20	mA
Peak forward current	IFP	75		60	mA*
Reverse voltage	VR	4			V
Operating temperature	Topr	-30~+85			˚C
Storage temperature	Tstg	-40~+85			˚C

* Pulse width 1ms Duty 1 / 5

SML-310 Series

LED lamps

!Electrical and optical characteristics (Ta=25°C)

Parameter			Forward voltage				Reverse		Luminous intensity				Peak		Spectral line
							current						wavelength		half width
		Color
							IR(µA)						λP(m)		∆λ(nm)
			VF(V)			Cond.		Cond.	IV(mcd)			Cond.		Cond.		Cond.
Type			Typ.		Max.	IF(mA)	Max.	VR(V)	Min.		Typ.	IF(mA)	Typ.	IF(mA)	Typ.	IF(mA)
	JT	Red	1.9		2.5	20	100	4	14.0		40.0	20	660	20	25	20
	LT	Red	1.75		2.5	20	100	4	3.6		10.0	20	660	20	25	20
	VT	Red	2.0		2.8	20	100	4	1.4		4.0	20	650	20	40	20
SML-310
	DT	Orange	2.0		2.8	20	100	4	2.2		6.3	20	610	20	40	20
	YT	Yellow	2.1		2.8	20	100	4	2.2		6.3	20	585	20	40	20
	MT	Green	2.2		2.8	20	100	4	3.6		16.0	20	570	20	40	20
	FT	Green	2.2		2.8	20	100	4	1.4		4.0	20	560	20	40	20
	PT	Green	2.2		2.8	20	100	4	1.4		4.0	20	555	20	40	20

!Directional pattern

	(X-Y)	ANGLE (˚)				(X'-Y' )	ANGLE (˚)
	10	0	10			10	0	10
	20		20			20		20
	30		30			30		30
	40			40		40			40
	50			50		50			50
	60			60		60			60
70				70	70				70
80				80	80				80
90	50	0	50	90	90	50	0	50	90
100				100	100				100
	RELATIVE LUMINOUS INTENSITY (%)					RELATIVE LUMINOUS INTENSITY (%)

Fig. 1 Directional pattern

!Electrical characteristics curves 1 (SML-310LT, SML-310JT) (Bright red)

	50																						1.6
		SML-310LT																Ta=25˚C				LUMINOUSRELATIVEINTENSITY										IF = 20mA
CURRENTFORWARD: IF (mA)	0.2										SML-310JT																			SML-
																																310LT
	20																						1.4
	10																						1.2
	5.0																						1.0
	2.0
	1.0																						0.8								SML-310JT
	0.5
																							0.6
	0.1
																							0.4
	1.5							2.0				2.5					3.0						-20			0	20		40		60		80
				FORWARD VOLTAGE : VF (V)																						CASE TEMPERATURE : Tc (˚C)

	5						Ta=25˚C
INTENSITY	2
	1			SML-310LT
	0.5
LUMINOUS						SML-310JT
	0.2
	0.1
	0.05
RELATIVE
	0.02
	0.01
	0.5	1	2	5	10	20	50	100
		FORWARD CURRENT : IF (mA)

Fig. 2 Forward current	Fig. 3 Luminous intensity vs.
vs. forward voltage	case temperature

Fig. 4 Luminous intensity vs. forward current