LIGHT EMITTING DIODES

1.6

÷÷4.6

M

R

4

3

0

W

•Light Emitting Diodes LED43-TEC-PR are designed for emitting at a spectral

range around 4300 nm. Thermocooler and thermoresistor are mounted inside 9

mm package TO-5. Heterostructures (HS) are grown on InAs substrates

•Light Emitting Diodes LED43-TEC-PR are developed for using in optical gas

sensors and medical diagnostics. Such construction gives possibility for

temperature stabilization of LED parameters. Lifetime is more then 10000 hours.

•Related products: Our standard LED Driver provides power supply of LED43-

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

Parameters

Min

Typ

Max

Wavelength,

µm

4.10

4.20

4.30

FWHM,

µm

0.75

0.90

1.05

Optical Power,

µW

Quasi-CW @ 200 mA

Pulsed@2A

8

180

10

200

12

220

Switching Time, ns

10

30

50

Range of temperature

control

-10

÷+60

Emitting Area,

µm

300x300

Soldering

temperature

95

Package

TO-5 with Thermocooler,

Thermistor and Parabolic

Reflector

0

10

20

30

40

50

-20

0

20

40

60

Temperature, C

∆T

max

(Amps) (Watts) (Volts)

°C

0.7

0.4

1.0

67

LED chip

TEC

LEAD

Thermoresistor

TOP SIDE VIEW

Thermoresistor

Thermoresistor

LED43 typical spectra at different temperatures

0

1

2

3

2500

3000

3500

4000

4500

5000

5500

Wavelength, nm

T=4°C

T=21°C

T=47°C

LED43 - typical power vs. current

characteristic at different temperatures

0

2

4

6

8

10

0

50

100

150

200

Current, mA

T=4°C

T=21°C

T=47°C

LED43 - typical Current -

Voltage characteristic

-40

-30

-20

-10

0

10

20

30

40

-2

-1

0

1

2

Voltage,V

Far field pattern

with and without reflector

LED43 (without reflector)

LED43-PR (with reflector)

Package TO-5 with Parabolic Reflector

Main thermocooler parameters (without load)

Recommended regimes of

LED operation

Quasi-CW

200 mA

250

µs

1

µs

2 A

500

µs

f=2 kHz

f=2 kHz

Pulsed

250

µs