L7558_15 Datasheet, PDF (1/4 Pages) Hamamatsu Corporation – Infrared LED

Infrared LED
L7558 series
High-speed, high-power infrared LED for free
space optics
The L7558 series LEDs were developed for free space optical communications such as image data signal transmission, and
operate at high speeds of 50 MHz.
The L7558 delivers a high output of 14 mW and is used in combination with a light projection lens. The L7558-01 is sealed in
a metal package capped with a glass lens that produces an angle of view of ±7° (full angle at half maximum).
Both types employ a metal stem package that gives higher reliability than plastic package devices.
Features
High-speed response: 50 MHz typ. (IF=50 mA)
High radiant output power
L7558 : 14 mW typ. (IF=50 mA)
L7558-01: 7 mW typ. (IF=50 mA)
High reliability
Applications
FSO (free space optics)
Absolute maximum ratings (Ta=25 °C)
Parameter
Symbol
Condition
Value
Unit
Forward current
IF
100
mA
Reverse voltage
VR
5
V
Pulse forward current
IFP
Pulse width=10 μs
Duty ratio=1%
1.0
A
Operating temperature
Topr
-30 to +85
°C
Storage temperature
Tstg
-40 to +100 *
°C
* Guaranteed to resist temperature cycle test of up to 5 cycles.
Note: Exceeding the absolute maximum ratings even momentarily may cause a drop in product quality. Always be sure to use the
product within the absolute maximum ratings.
Electrical and optical characteristics (Ta=25 °C)
Parameter
Peak emission wavelength
Spectral half width
Forward voltage
Pulse forward voltage
Reverse current
Radiant flux
Radiant illuminance
Cut-off frequency
Symbol
λp
Δλ
VF
VFP
IR
φe
PE
fc
Condition
IF=50 mA
IF=50 mA
IF=50 mA
IF=1 A
VR=5 V
IF=50 mA
IF=50 mA
IF=50 mA ± 1mAp-p
L7558
Min. Typ. Max.
820 850 880
-
50
-
-
1.45 1.60
-
3.4
4.3
-
-
10
11
14
-
-
1.5
-
35
50
-
L7558-01
Min. Typ. Max.
820 850 880
-
50
-
-
1.45 1.60
-
3.4
4.3
-
-
10
5.5
7.0
-
-
4.0
-
35
50
-
Unit
nm
nm
V
V
μA
mW
mW/cm²
MHz
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