LIGHT EMITTING DIODES

1.6

÷÷4.6

M

C

2

9

8

W

•Light Emitting Diodes LED29-TEC are designed for emitting at a spectral range

around 2900 nm. Thermocooler and thermoresistor are mounted inside 9 mm

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

•Light Emitting Diodes LED29-TEC 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: LED29 can be used in optical pair with our photodiodes

PD36. Our standard LED Driver provides power supply of LED29-TEC in two

recommended here regimes (Quasi-CW and Pulsed).

Parameters

Min

Typ

Max

Wavelength,

µm

2.80

2.90

3.00

FWHM,

µm

0.60

0.70

0.80

Optical Power,

µW

Quasi-CW @ 200 mA

Pulsed@2A

6

120

8

150

10

170

Switching Time, ns

10

30

50

Range of temperature

control

-10

÷+60

Emitting Area,

µm

300x300

Soldering

temperature

95

Package

TO-5 with thermocooler

and thermistor

Main thermocooler parameters (without load)

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

Thermoresistor

TEC

LEAD

TOP SIDE VIEW

Thermoresistor

Thermoresistor

LED29 typical spectra at different temperatures

0

0,3

0,6

0,9

1,2

1800

2200

2600

3000

3400

3800

4200

4600

5000

Wavelength, nm

T=10°C

T=25°C

T=46°C

LED29 - typical power vs. current

characteristic at different temperatures

0

2

4

6

8

10

0

50

100

150

200

Current, mA

T=10°C

T=25°C

T=46°C

LED29 - typical Current-voltage

characteristic

-40

-30

-20

-10

0

10

20

30

40

-1 -0,8 -0,6 -0,4 -0,2

0

0,2 0,4

Voltage, V

Far field pattern

with and without reflector

LED29 (without reflector)

LED29-PR (with reflector)

Package TO-5

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