Mid-Infrared (MIR) Light-Emitting Diode
Series with glass cover

2.83 - 2.90 μm

Lms28LED-CG
Device parameters

Symbol

Value

Units

Operating/storage temperatureTopr

0..+50°C

Soldering temperature(time < 3 seconds, 3 mm from case)

Tsol+180°C

All parameters are for LED operation at 25°C unless otherwise stated.

LED parameters
Peak emission wavelength1
1

FWHM of the emission band

Conditions

Symbol

Value

Units

qCW mode3 I = 150 mA

λp

2.83 - 2.90µm

3FWHM
Pqcw

300 - 500nm

min 100 / typ 300µW

Pulse mode4 I = 1 A

Ppul

min 700 / typ 2000µW

qCW mode3

Imax qcw

200mA

4Pulse mode

Imax pulse

1A

qCW mode3 I = 200 mA

V0.2 - 1.0

VqCW mode I = 150 mA

Average optical power (minimal / typical)

1

3

qCW mode I = 200 mA

Peak optical power (minimal / typical)2
Maximum operating current
Forward voltage1
3

3

Typical spectrum (qCW )600

Typical optical power characteristic (qCW )originalwith atmospheric impact

500

Power, µW

Intensity, a.u.

400
300
20010002000 2200 2400 2600 2800 3000 3200 3400

Wavelength, nm

1401201008060
40200050100150200

250Current, mA

Typical current-voltage characteristic (qCW3)
250Current, mA

200
150100500-800 -600 -400 -200
0-50200

400

600

800Voltage, mV

Rev.200820

1Parameter tested for each device.

2Parameter tested for representative sampling.

3

qCW mode: repetition rate: 0.5 KHz, pulse duration: 1 ms, duty cycle: 50%.

4Pulse mode: repetition rate: 0.5 KHz, pulse duration: 20 µs, duty cycle: 1%.

The design and specifcation of the product can be changed by LED Microsensor NT LLC. without notice
HEAD OFFICE LED Microsensor NT, LLC and RnD CENTRE Microsensor Technology, LLC
10, A, Kurchatova str., 1N, St-Petersburg, 194223, Russia; info@lmsnt.com; www.lmsnt.com

page 1 (4)Mid-Infrared (MIR) Light-Emitting Diode
Series with glass cover

2.83 - 2.90 μm

Packages

Model

TO-18 with glass cover

Lms28LED-CG

Radiant characteristic (far-field pattern)
TO-18 package with glass cover

Relative radiant intensity

10°

20°

30°

40°

50°
60°
70°
80°

1,00,8 0,6 0,40,290°

Related products:● Photodiodes Lms36PD series - detectors of mid-infrared radiation;● LED drivers (D-41i, D-51i, minidrivers mD-1c, mD-1p ) - provide LED power supply in pulse modes.

Rev.200820

The design and specifcation of the product can be changed by LED Microsensor NT LLC. without notice
HEAD OFFICE LED Microsensor NT, LLC and RnD CENTRE Microsensor Technology, LLC
10, A, Kurchatova str., 1N, St-Petersburg, 194223, Russia; info@lmsnt.com; www.lmsnt.com

page 2 (4)Mid-Infrared (MIR) Light-Emitting Diode
Series with glass cover

2.83 - 2.90 μm

To drive the LED we recommend the following basic circuit connection:

LEDPulse
generator
1 Ohm

We recommend using Quasi Continuous Wave (qCW) mode with a duty cycle 50% or 25% to obtain maximum
average optical power and short Pulse modes to obtain maximum peak power. Hard CW (continius wave) mode is
NOT recommended.

Quasi Continuous Wave (qCW) mode

Pulse mode

31-1000 μs 31-1000 μs

max.
0.25 AA
max.0.2

f = 0.5 - 16 kHz

Drive current

Drive current

2-20 μs

62 - 2000 μs
max. 2 A
max.1
A
f = 0.5 - 16 kHzTimeTimeIMPORTANT CAUTIONS:● please check your connection circuit before turning on the LED;● please mind the LED polarity: anode is marked with a RED dot; REVERSE voltage applying is FORBIDDEN;● please do not connect the LED to the multimeter;● please control the CURRENT applied to the LED in order NOT to EXCEED the maximum allowable values;● please do not touch glass covering and do not apply any force to it;● please observe the operating and storage temperature, exceeding the allowable range may cause irreparable
damage of glass covering.

Rev.200820

The design and specifcation of the product can be changed by LED Microsensor NT LLC. without notice
HEAD OFFICE LED Microsensor NT, LLC and RnD CENTRE Microsensor Technology, LLC
10, A, Kurchatova str., 1N, St-Petersburg, 194223, Russia; info@lmsnt.com; www.lmsnt.com

page 3 (4)Mid-Infrared (MIR) Light-Emitting Diode
Series with glass cover

2.83 - 2.90 μm

Technical Drawing
Lms28LED-CG

All dimensions are pointed in mm.
Rev.200820

The design and specifcation of the product can be changed by LED Microsensor NT LLC. without notice
HEAD OFFICE LED Microsensor NT, LLC and RnD CENTRE Microsensor Technology, LLC
10, A, Kurchatova str., 1N, St-Petersburg, 194223, Russia; info@lmsnt.com; www.lmsnt.com

page 4 (4)