VLM.33..

www.vishay.com

Vishay Semiconductors

Rev. 2.1, 19-Sep-2022

3

Document Number: 81336

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

• 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

TYPICAL CHARACTERISTICS (Tamb = 25 °C, unless otherwise specified)

Fig. 1 - Forward Current vs. Ambient Temperature

Fig. 2 - Forward Current vs. Pulse Length

LUMINOUS INTENSITY CLASSIFICATION

GROUP

LUMINOUS INTENSITY (mcd)

STANDARD

OPTIONAL

MIN.

MAX.

P

145

56

256

71

Q

171

90

2

90

112

R

1

112

140

2

140

180

S

1

180

224

2

224

280

T

1

280

355

2

355

450

U

1

450

560

2

560

710

CROSSING TABLE

VISHAY

OSRAM

VLMS33S1T2

LST67B-S1T2

VLMS33S1U1

LST67B-T1U1

0

10

20

30

40

50

60

70

80

90

100

0

25

50

75

100

125

16784

R

thJA = 400 K/W

Tamb - Ambient Temperature (°C)

0.00

0.02

0.04

0.06

0.08

0.10

0.12

tp - Pulse Length (s)

10-5 10-4 10-3 10-2 10-1 100

101

102

t

p/T = 0.005

0.05

0.5

17044