÷÷4.6

M

0

2

5

W

•Light Emitting Diodes LED20 are designed for emitting at a spectral

range around 2050 nm. Heterostructures (HS) are grown on GaSb

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

a forward direction.

•Light Emitting Diodes LED20 are developed for using in optical gas

sensors and medical diagnostics. They have stable output power and

lifetime more then 10000 hours.

•Related products: LED20 can be used in optical pair with our photodiodes

PD24. Our standard LED Driver provides power supply of LED20 in two

recommended here regimes (Quasi-CW and Pulsed).

Parameters

Min

Typ

Max

Wavelength,

µm

2.00

2.05

2.09

FWHM,

µm

0.15

0.20

0.25

Optical Power, mW

Quasi-CW @ 200 mA

Pulsed@1A

0.9

25

1.1

28

1.3

30

Switching Time, ns

10

30

50

Operating Temperature

Range,

-240

÷+50

Emitting Area,

µm

300x300

Soldering temperature

260

Package

TO-18

LED 20 typical spectra

at different temperatures

0

50

100

150

200

250

300

350

400

1600

1700

1800

1900

2000

2100

2200

2300

2400

Wavelength, nm

T=10

C

T=33

C

T=55

LED20 - typical power vs. current

characteristic

0,0

0,2

0,4

0,6

0,8

1,0

1,2

0,0

50,0

100,0

150,0

200,0

Current, mA

LED20 - typical Current-voltage

characteristic

-30

-20

-10

0

10

20

30

40

-4

-3

-2

-1

0

1

2

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

LED20 (without reflector)

LED20-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