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2011 ROHM Co., Ltd. All rights reserved.

2011.04 - Rev.B

Data Sheet

LA-501DN Series



Electrical and optical characteristic curves

LA-501MD

LA-501MN

LA-501VD

LA-501VN

0.1

1

10

100

1

1.5

2

2.5

3

Ta=25

°C

Fig.1 Forward Current - Forward Voltage

0.01

0.10

1.00

10.00

1

10

100

Ta=25

°C

Fig.2 Relative Luminous Intensity - Forward Current

0.4

0.6

1.2

1.4

1.6

Case Temparature (

°C)

-25 -15 -5

5

15

25 35 45 55 65

75

0.8

1

Fig.3 Relative Luminous Intensity - Case Temperature

1

10

100

1000

10000

100000

Pulse Duration : tw(µs)

1

10

Fig.4 Ratio of Maximum Tolerable Peak Current - Pulse Duration

0%

20%

40%

60%

80%

100%

120%

Ambient Temperature(

°C)

-25 -15 -5

5

15 25 35 45 55 65 75 85

Fig.5 Derating