PHOTONIC
High-Speed GaAIAs Infrared Point Source Emitter
Peak Wavelength 850 nm,Type
PDI-E821
DETECTORS INC.
PACKAGE DIMENSIONS
inch (mm)
C
L
45°
0.040
[1.02]
1.00 [25.4] MIN
0.145 [3.68]
0.112 [2.84]
0.098 [2.49]
Ø0.019 [0.48]
Ø0.016 [0.41]
C
L
Ø0.195 [4.95]
Ø0.178 [4.52]
CATHODE
C
L
L.E.D.
Ø0.212 [5.38]
Ø0.209 [5.31]
0.015 [0.38] SQ
Ø0.004 [Ø0.10]
EMITTER AREA
CATHODE
BOTTOM SIDE ANODE
WINDOW CAP
(WELDED)
HEADER
ANODE
& CASE
0.025 [0.64]
0.022 [0.56]
0.100 [2.54]
0.145 [3.68]
C
L
TO-46 HERMETIC CAN PACKAGE
80
O
HALF INTENSITY BEAM ANGLE
Pd
I
FP
I
FP
V
R
To & Ts
TS
Power Dissipation
Continuous Forward Current
Peak Forward Current (10µs, 10Hz)
Reverse voltage
Storage & Operating Temperature
Soldering Temperature*
-55
200
100
2.5
2
+125
+260
mW
mA
A
V
o
C
o
C
*1/16 inch from case for 3 secs max
RELATIVE POWER OUTPUT (%)
DESCRIPTION:
The
PDI-E821
is a GaAlAs, 850
FEATURES
nm, high speed point source emitter. The emitting
High speed
junction is .004 inch (0.10 mm) diameter. The topside
High reliablity
metal cathode forms an optical aperture mask. Pack-
Wide emission angle
aged in a TO-46 header with a flat glass window cap.
ABSOLUTE MAXIMUM RATING
(TA=25
O
C unless otherwise noted)
SYMBOL
PARAMETER
MIN
MAX
UNITS
APPLICATIONS
Fiber optic sources
Optical encoders
Point light sources
TYPICAL RADIATION PATTERN
ELECTRO-OPTICAL CHARACTERISTICS
(TA=25
O
C unless otherwise noted)
SYMBOL CHARACTERISTIC
TEST CONDITIONS
MIN
TYP
P
O
V
F
V
R
D
λ
D
BEAM ANGLE,
θ
(deg)
MAX
2.2
870
UNITS
mW
V
V
nm
nm
pF
nS
nS
λ
P
C
t
t
r
t
f
Output Power
Forward Voltage
Reverse Breakdown Voltage
Peak Wavelength
Spectral Halfwidth
Terminal Capacitance
Rise Time
Fall Time
RELATIVE POWER OUTPUT (%)
I
F
= 100 mA
I
F
= 100 mA
I
F
= 10
µ
A
I
F
= 20 mA
I
F
= 20 mA
V
R
= 0 V,f = 1 MHz
I
F
= 20 mA
I
F
= 20 mA
TYPICAL POWER OUTPUT
DEGRADATION CURVE
2.5
1.70
2.0
830
850
30
60
15
15
RELATIVE POWER OUTPUT (%)
RELATIVE POWER OUTPUT (%)
RELATIVE OUTPUT vs.
FORWARD CURRENT
100
80
60
40
20
20
40
60
80
100
0
0
100
80
60
40
20
SPECTRAL OUTPUT
FORWARD CURRENT (mA)
STRESS TIME (hrs)
Information in this technical data sheet is believed to be correct and reliable. However, no responsibility is assumed for possible inaccuracies or omission. Specifications
are subject to change without notice. Optical power and radiant intensity measured using uncapped dimpled TO-46 into integrating sphere.
800
810
820
830
840
850
860
870
880
890
900
WAVELENGTH,
λ
(nm)
0
Integrated technical exchanges
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