Plastic Fiber Optic Super-Bright LED
D
escription
IF E97
9/18
The IF-E97 is a high-optical-output, visible red LED housed in a “connector-less” style
plastic fiber optic package. The output spectrum is produced by a GaAlAs die which peaks
at 650 nm, one of the optimal transmission windows of PMMA plastic optical fiber. The
device package features an internal micro-lens and a precision-molded PBT housing to
ensure efficient optical coupling with standard 1000 μm core plastic fiber cable.
A
pplicAtion
H
igHligHts
The high output and excellent linearity of the IF-E97 make it suitable for analog and
digital data links. The IF-E97 can achieve data rates of 1 Mbps when used with an IF-D96
photologic detector. The visible red light has low attenuation in PMMA plastic fiber and
aids in troubleshooting installations. The drive circuit design is simpler than required for
laser diodes, making the IF-E97 the lowest cost selection for a variety of analog and digital
applications requiring maximum operating distance.
A
pplicAtions
➤
Low Cost Analog and
Digital Data Links
➤
Automotive Electronics
➤
Digitized Audio
➤
Medical Instruments
➤
PC-to-Peripheral Data Links
➤
Robotics Communications
➤
Motor Controller Triggering
➤
EMC/EMI Signal Isolation
➤
Local Area Networks
➤
Intra-System Links: Board-
to-Board, Rack-to-Rack
F
eAtures
◆
High Optical Power
◆
Visible Red Output Aids Troubleshooting
◆
Low Transmission Loss with PMMA Plastic Fiber
◆
No Optical Design required
◆
Mates with standard 1000 μm Core, 2.2 mm Jacketed Plastic Fiber Cable
◆
Internal Micro-Lens for Efficient Optical Coupling
◆
Inexpensive Plastic Connector Housing
◆
Connector-Less Fiber Termination
◆
Light-Tight Housing Provides Interference-Free Transmission
◆
RoHS compliant
M
AxiMuM
r
Atings
(TA =25°C)
Operating and Storage
Temperature Range
(TOP, TSTG)...............-40°to 85°C
Junction Temperature (TJ).........85°C
Soldering Temperature
(2mm from case bottom)
(TS) t
≤
5 s..........................240°C
Reverse Voltage (VR)....................5 V
Power Dissipation
(PTOT) TA =25°C...........100 mW
De-rate Above 25°C.....1.33 mW/°C
Forward Current, DC (IF)......40 mA
Surge Current (IFSM)
t
≤
100
µs........................200
mA
c
HArActeristics
(TA =25°C)
Parameter
Peak Wavelength
Full-Spectral Bandwidth (FWHM)
Output Power Coupled into Plastic Fiber
(1 mm core diameter). Distance Lens to
Fiber
≤0.1
mm, 1m polished fiber,
IF=20 mA
Fiber Transmission Loss
SH4001 10 meter cutback
Switching Times (10% to 90% and
90% to 10%) (Figure 4)
Capacitance (F=1 MHz) (V
F
=0)
Forward Voltage (IF =20 mA)
Symbol
λ
PEAK
∆λ
P
O
Min.
640
–
200
-7.0
–
–
–
1.7
–
Typ.
650
20
300
-5.2
0.19
100
160
1.9
20
Max.
660
–
425
-3.7
–
–
–
2.1
–
Unit
nm
nm
µW
dB/m
dB/m
ns
ns
pF
V
L
tr
tf
C0
Vf
CAUTION:
The IF E97 is ESD sensitive. To minimize risk of damage observe appropriate precautions during handling
and processing.
I
ndustrIal
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Iber
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ptIcs
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nc
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IF E97
4.0
3.0
2.0
1.0
0
Plastic Fiber Optic Super-Bright LED
R
B
560
R
A
U1
IF-
E97
0
20
40
60
80
100
C
A
F
igure
1.
Normalized power launched versus forward current.
F
igure
4.
Test/Application circuit (IF = 20mA).
3.0
0.40
2.5
0.35
Total Loss Relative to 1 meter (dB)
1.5
0.25
1.0
0.20
0.5
Above 12 meters
add 0.17 dB/meter
0
2
4
6
8
10
12
14
0.15
0.0
0.10
Fiber Length (m)
F
igure
2.
Typical spectral output versus wavelength.
F
igure
5.
Fiber Loss in GH4001
2
Typical Normalized Output Power (dB)
1.5
1
0.5
0
-0.5
-1
-1.5
-2
-20
0
20
40
60
80
Temperature (°C)
F
igure
3.
Output power versus temperature
F
igure
6.
Cross-section of fiber optic device.
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Loss / meter (dB/m)
2.0
0.30
IF E97
A
pplicAtion
n
otes
Plastic Fiber Optic Super-Bright LED
F
iber
t
erMinAtion
i
nstructions
1.
Cut off the ends of the optical fiber with a single-
edge razor blade or sharp knife. Try to obtain a
precise 90-degree angle (square).
Insert the fiber through the locking nut and into
the connector until the core tip seats against the
internal micro-lens.
Screw the connector locking nut down to a snug fit,
locking the fiber in place. Do not exceed a torque of
0.4 N.m.
The application circuit given in Figure 4 can be used to drive
the IF-E97 for fast applications. Gate U1 represents the circuit
being used to drive the IF-E7. This must be able to supply the
desired drive current at the output voltage. Resistor R
A
supplies
most of the drive current for the IF-E97. The amount of current
supplied is I
A
= (V
U1
– V
f
) / R
A
, where V
f
is the IF-E97 forward
voltage and V
U1
is the drive circuits output voltage under load.
Resistor R
B
speeds up the switching time by keeping the voltage
across the IF-E97 from going to zero during turn off. It also
supplies some of the drive current. The drive current from R
B
is
I
B
= (V
CC
– V
f
) / R
B
, where V
CC
is the supply voltage. The total
drive current to the IF-E97 is I
A
+ I
B
. Some power is wasted in
R
B
when the IF-E97 is off. Capacitor C
A
is used to increase the
drive current during switching and speed up the turn on and
turn off times. It must not be so large as to overdrive the IF-E97
during turn on or drive the voltage negative during turn off. For
lower speed applications, only R
A
is needed and C
A
and R
B
can
be omitted.
2.
3.
MIN 9.0
MIN .35
M
ARKING:
• XXXXXX - Lot No.
• IFE97 - Part No.
OR
7.49
7.75
.295
.305
• Blue housing w/ Silver dot
• PIN 1. Cathode
• PIN 2. Anode
F
igure
7.
Case outline.
Specifications are believed to be accurate but are subject to change. Industrial Fiber Optics assumes no
responsibility for the consequences of using the information provided beyond replacement warranty for products
not meeting stated specifications. Industrial Fiber Optics products are not authorized for use in life support
applications without written approval from the President of Industrial Fiber Optics Corporation.
CAUTION: • To avoid degraded device life due to package stress, do not bend or form leads outside the orientation shown on drawing.
• Ensure that solder flux does not migrate into the device and block the optical path, degrading the performance.
• If washing the device, liquid may become trapped in the part cavity. Ensure that all potentially corrosive materials are flushed
out of the device.
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ndustrIal
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