L8245 is a long-wavelength infrared LED using an InGaAs chip. The peak emission occurs at a wavelength near the methane gas absorption

band, making L8245 ideal for a light source for methane gas detection.

Features

l Peak emission wavelength: 1.65 µm

l High radiant output

Applications

l Light source for methane gas detection

LED

Infrared LED

Peak emission wavelength: 1.65 µm

L8245

s Absolute maximum ratings (Ta=25

°C, unless otherwise noted)

Parameter

Symbol

Condition

Value

Unit

Reverse voltage

1

V

Forward current

80

mA

Forward current decrease rate

-

1.1

mA/°C

Pulse forward current

Pulse width=10 µs

Duty ratio=1 %

1.0

A

Pulse forward current decrease rate

-

13

mA/°C

Power dissipation

P

150

mW

Operating temperature

Topr

-30 to +85

°C

Storage temperature

Tstg

-40 to +100 *

1

°C

*1: Guaranteed to resist temperature cycle test of up to 5 cycles.

s Electrical and optical characteristics (Ta=25

°C)

Parameter

Symbol

Condition

Min.

Typ.

Max.

Unit

Peak emission wavelength

λp

1.6

1.65

1.7

µm

Spectral half width

∆λ

-

130

-

nm

Radiant flux

φe

0.5

0.8

-

mW

Forward voltage

-

1.0

1.5

V

Reverse current

-

-

10

µA

Cut-off frequency

fc

2

1

3

-

MHz

*2: Frequency at which the optical output decreases by -3 dB versus a reference output level at 100 kHz.

1

L8245 may be damaged or performance may deteriorate due to static electricity, so use caution when handling.