÷÷4.6

M

R

1

5

W

•Light Emitting Diodes LED18-PR are designed for emitting at a spectral

range around 1850 nm. Heterostructures (HS) are grown on GaSb

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

a forward direction.

•Light Emitting Diodes LED18-PR are developed for using in optical gas

sensors and medical diagnostics. They have stable output power and

lifetime more then 10000 hours.

•Related products: LED18-PR can be used in optical pair with our

photodiodes PD24. Our standard LED Driver provides power supply of

LED18-PR in two recommended here regimes (Quasi-CW and Pulsed).

Parameters

Min

Typ

Max

Wavelength,

µm

1.80

1.85

1.89

FWHM,

µm

0.15

0.20

0.25

Optical Power, mW

Quasi-CW @ 200 mA

Pulsed@2A

0.7

15

0.9

20

1.1

25

Switching Time, ns

10

30

50

Operating Temperature

Range,

-240

÷+50

Emitting Area,

µm

300x300

Soldering temperature

260

Package

TO-18 with Parabolic Reflector

LED18 typical spectra at different temperatures

0

10

20

30

40

50

60

70

1400 1500 1600 1700 1800 1900 2000 2100 2200 2300 2400

Wavelength, nm

T=65C

T=20C

T=10C

LED18 - typical power vs. current

characteristic

0,0

0,1

0,2

0,3

0,4

0,5

0,6

0,7

0,8

0,9

1,0

0

50

100

150

200

Current, mA

LED18 - typical Current-voltage

characteristic

-30

-20

-10

0

10

20

30

40

-5

-4

-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

LED18 (without reflector)

LED18-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

Package TO-18 with Reflector