÷÷4.6

M

1

3

1

4

W

•Light Emitting Diodes LED31 are designed for emitting at a spectral

range around 3100 nm. Heterostructures (HS) are grown on InAs

substrates. The output emission can be modulated by current flowing in

a forward direction.

•Light Emitting Diodes LED31 are developed for using in optical gas

sensors and medical diagnostics. They have stable output power and

lifetime more then 10000 hours.

•Related products: LED31 can be used in optical pair with our photodiodes

PD36. Our standard LED Driver provides power supply of LED31 in two

recommended here regimes (Quasi-CW and Pulsed).

Parameters

Min

Typ

Max

Wavelength,

µm

3.00

3.10

3.20

FWHM,

µm

0.60

0.70

0.80

Optical Power,

µW

Quasi-CW @ 200 mA

Pulsed@1A

12

180

14

200

16

220

Switching Time, ns

10

30

50

Operating Temperature

Range,

-240

÷+50

Emitting Area,

µm

300x300

Soldering temperature

260

Package

TO-18

LED31 - typical spectra at different temperatures

0

2

4

6

8

10

12

14

2000

2500

3000

3500

4000

4500

Wavelength, nm

T=6 C

T=50 C

T=20 C

LED31 - typical Power vs.

current characteristic

0

2

4

6

8

10

12

14

16

18

0

50

100

150

200

Current, mA

LED31 - typical Current - Voltage

characteristic

-40

-30

-20

-10

0

10

20

30

40

-3

-2

-1

0

1

Voltage,V

Far field pattern

with and without reflector

0

0,1

0,2

0,3

0,4

0,5

0,6

0,7

0,8

0,9

1

LED31 (without reflector)

LED31-PR (with reflector)

Recommended regimes of operation

Quasi-CW

200 mA

250

µs

250

µs

1

µs

2 A

500

µs

f=2 kHz

f=2 kHz

Pulse