L7868 Datasheet, PDF (1/2 Pages) Hamamatsu Corporation – Small emission spot, red LED using current confined chip

LED
Red LED
L7868 series
Small emission spot, red LED using current confined chip
L7868/-02 are red LEDs with a microball lens bonded to the current-confined structure chip surface. L7868-01 uses the same structure LED chip
with no microball lens and provides a smaller emission spot of φ150 µm. L7868-02 uses a glass lens window for even narrower directivity (beam
spread).
Features
l Small emission spot
L7868: φ400 µm
L7868-01: φ150 µm
l Uniform emission pattern
l Narrow directivity: L7868-02
Applications
l Optical switches
l Automatic control system
s Absolute maximum ratings (Ta=25 °C, unless otherwise noted)
Parameter
Symbol
Condition
Reverse voltage
V4
Forward current
I.
Forward current
derating rate
- Ta > 25 °C
Pulse forward
current
I.2
Pulse width=10 µs
Duty ratio=1 %
Pulse forward
current derating rate
-
Ta > 25 °C
Power dissipation
P
Operating
temperature
Topr
Storage temperature Tstg
Value
3
60
0.8
0.5
7
180
-30 to +85
-40 to +100
Unit
V
mA
mA/°C
A
mA/°C
mW
°C
°C
s Electrical and optical characteristics (Ta=25 °C)
Parameter
Symbol
Condition
Min.
Peak emission
wavelength
lp I.=20 mA
650
Spectral half width
(FWHM)
Dl I.=20 mA
-
Radiant flux
fe I.=20 mA
0.35
Radiant illuminance P- I.=20 mA
-
Forward voltage
V. I.=20 mA
-
Pulse forward
voltage
V.2 I.=0.5 A
-
Reverse current
I4 V4=3 V
-
Rise time
tr
I.=20 mA,
10 % to 90 %
-
Fall time
tf
I.=20 mA,
90 % to 10 %
-
L7868
Typ.
670
20
0.45
0.1
1.9
4.3
-
0.06
0.06
Max.
700
-
-
-
2.2
5.5
10
0.1
0.1
L7868-01
Min. Typ. Max.
650 670 700
-
20
-
0.15 0.2 -
-
-
-
- 1.9 2.2
- 4.3 5.5
-
-
10
- 0.06 0.1
- 0.06 0.1
L7868-02
Unit
Min. Typ. Max.
650 670 700 nm
-
20
0.35 0.45
- 0.4
- 1.9
- 4.3
-
-
- 0.06
-
nm
-
mW
- mW/cm
2.2
V
5.5
V
10
µA
0.1
µs
- 0.06 0.1
µs
1