VLMK31..

www.vishay.com

Vishay Semiconductors

Rev. 2.0, 15-Sep-2022

2

Document Number: 81329

For technical questions, contact: LED@vishay.com

THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT

ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000

Note

(1) Driving LED in reverse direction is suitable for short term application

Note

(1) In one packing unit IVmax./IVmin.

≤ 1.6

Note

• Luminous intensity is tested at a current pulse duration of 25 ms

and an accuracy of ± 11 %.

The above type numbers represent the order groups which

include only a few brightness groups. Only one group will be

shipped on each reel (there will be no mixing of two groups on

each reel).

In order to ensure availability, single brightness groups will not

be orderable.

In a similar manner for colors where wavelength groups are

measured and binned, single wavelength groups will be shipped

on any one reel.

In order to ensure availability, single wavelength groups will not

be orderable

Power dissipation

PV

80

mW

Junction temperature

Tj

125

°C

Operating temperature range

Tamb

-40 to +100

°C

Storage temperature range

Tstg

-40 to +100

°C

Thermal resistance junction to ambient

Mounted on PC board (pad size > 16 mm2)RthJA

400

K/W

OPTICAL AND ELECTRICAL CHARACTERISTICS (Tamb = 25 °C, unless otherwise specified)

VLMK31.., RED

PARAMETER

TEST CONDITION

PART

SYMBOL

MIN.

TYP.

MAX.

UNIT

Luminous intensity (1)

IF = 20 mA

VLMK31Q1R2

IV

71

138

180

mcd

VLMK31R1S1

IV

112

142

224

mcd

VLMK31R1S2

IV

112

142

280

mcd

VLMK31R2S2

IV

140

160

280

mcd

Dominant wavelength

IF = 20 mA

λd

-

630

-

nm

Peak wavelength

IF = 20 mA

λp

-

643

-

nm

Angle of half intensity

IF = 20 mA

ϕ

-± 60

-

°

Forward voltage

IF = 20 mA

VF

-1.9

2.6

V

Reverse voltage

IR = 10 μA

VR

5-

-

V

Junction capacitance

VR = 0 V, f = 1 MHz

Cj

-15

-

pF

ABSOLUTE MAXIMUM RATINGS (Tamb = 25 °C, unless otherwise specified)

VLMK31..

PARAMETER

TEST CONDITION

SYMBOL

VALUE

UNIT

LUMINOUS INTENSITY CLASSIFICATION

GROUP

LIGHT INTENSITY (mcd)

STANDARD

OPTIONAL

MIN.

MAX.

Q

171

90

2

90

112

R

1

112

140

2

140

180

S

1

180

224

2

224

280

CROSSING TABLE

VISHAY

OSRAM

VLMK31Q1R2

LST676-Q1R2

VLMK31R1S1

LST676-R1S1

VLMK31R1S2

LST676-R1S2

VLMK31R2S2

LST676-R2S2