SFH757 and SFH757V
Transmitter for Polymer Optical Fiber Applications
Data Sheet
Description
The SFH757 is a low-cost transmitter diode for optical
data transmission with polymer optical ber. Its InGaAlP
LED chip provides enhanced resistance to humidity and
is designed to emit light at 650 nm. The robust SFH757
can be used for speeds up to 100 MBd and complements
the Avago SFH250 photodiode receiver and SFH551/1-1
integrated photo detector receiver.
The SFH series is optimized for easy coupling. No ber
stripping is required; just insert the cut ber into the
selected SFH component.
SFH757
The transparent plastic package has an aperture where a
2.2 mm ber end can be inserted. This very easy coupling
method is extremely cost-eective.
SFH757V
The V-housing allows easy coupling of unconnectorized
2.2 mm polymer optical ber with an axial locking screw.
Ordering Information
Features
• High speed transmitter for up to 100MBd applications
(with peaking circuits)
• 2.2mm aperture holds standard 980/1000/2200µm
plastic bers
• No ber stripping required
• Molded microlens for ecient coupling
Plastic Direct Fiber Connector housing
(V-housing)
• Locking screw attached to the connector
• Interference-free transmission by the light-tight
housing
• Transmitter and receiver can be positioned exibly
• No cross talk
• Auto insertable and wave solderable
• Supplied in tubes
Applications
• Household electronics
• Power electronics
• Optical networks
• Light barriers
Application Literature
AN # Description
5342 General information about the SFH series
with Selection Guide and recommendations
regarding System Planning and Mounting
5341 Information about Basic and Special Circuits for
Transmitter and Receiver of the SFH series
SFH757 SFH757V
Type Ordering Code
SFH757 SP000063871
SFH757V SP000063858
2
Package Dimensions
SFH757
SFH757V
Dimensions in mm
Dimensions in mm
Package V-housing Color
SFH V-series components are color coded just like other
Avago ber optic components. The SFH757V transmitter
has a white colored housing; the SFH250V and SFH551/1-
1V receiver components have a black colored housing.
This prevents mistakes while making connections.
Product designation and date of manufacture are printed
on the housing.
Package V-housing mounting pins
SFH V-series components have two pins that are electri-
cally isolated from the inner circuit. The pins are only
designed for mounting the V-housing to the PCB surface.
This helps increase stability, which is needed during
xing the ber end by the axial locking screw.
The retention force between the soldered mounting pins
and the V-housing of the SFH component is about 20 N
(with a vertical exertion of force). This is an approximate
value.
Package V-housing axial locking screw
Components of the SFH V-series are equipped with an
axial locking screw for easy coupling to the unconnec-
torized 2.2 mm polymer optical ber. The force that is
necessary to pull a jammed ber out of the V-housing is
typically 50 N (with a torque of 15 cNm for tightening the
locking screw). This is an approximate value that is very
dependent on the ber and torque combination.
Package V-housing mounting pins Package V-housing axial locking screw
surface not at
28
A
0.5
view from A
1.5
0.5
5.3
0.6
∅ 2.275
8.6
7.65
4.6
∅ 4.625
2.54
Cathode
locking screw
24.0
13.5
3.5
spacing
0.5 ∅ 0.6
SFH757
component
9.0
Cathode
8.8
4.8
2.54
5.08
7.62
3
Technical Data
Absolute Maximum Ratings
Parameter Symbol Min Typ Max Unit Notes Figure
Operating Temperature range TC-40 +85 °C
Storage Temperature range Tstg -40 +100 °C
Junction Temperature TJ+100 °C
Soldering Temperature
(2mm from case bottom, t≤5s)
TS+260 °C
Reverse Voltage VR3 V
Forward Current IF50 mA
Power Dissipation Ptot 120 mW
Thermal Resistance (Junction/Air) RthJA 450 K/W 1
Electrostatic Discharge Voltage Capability ESD 2000 V 1
Electrostatic Discharge Voltage Capability ESD 400 V 2
Notes:
1. ESD Capability for all Pins HBM(Human Body Model) according JESD22-A114
2. ESD Capability for all Pins MM (Machine Model) according JESD22-A115
Characteristics (TA = -40°C to +85°C) unless otherwise specied
Parameter Symbol Min Typ* Max Unit Notes Figure
Peak Wavelength λPEAK 630 650 685 nm 5
Spectral Bandwidth (FWHM) Δλ 20 30 nm 5
Switching Times (R_ILED = 100Ohm)
T_rise (10%...90%)
T_fall (90%.. 10%)
T_rise (10%...90%)
T_fall (90%.. 10%)
tr
tf
tr
tf
14
16
20
24
25
27
ns
ns
ns
ns
1,2,4
1,2,4
1,4
1,4
Capacitance (fmeas = 1MHz; Vf = 0V) CS52 pF
Forward Voltage (ILED_DC = 50mA) VF
VF
2.0 2.6
2.7
V
V
2 4
4
Optical Output Power (ILED_DC = 10mA) POPT
POPT
-10.5
-12.5
-6.2 -2.5
-1.5
dBm
dBm
2,3,5
3,5
3
3
Coecient Symbol Value Unit Notes Figure
Optical Power Temperature Coecient TPOPT -0.4 %/K 6,7
Forward Voltage Temperature Coecient TVF -1.8 mV/K
Wavelength Temperature Coecient Tλ0.16 nm/K
* Typical value = mean value at TA = 25°C
Notes:
1. Given switching time values can be reduced by suitable driver circuits. Also an increase of LED-Current leads to a reduction of the switching times.
2. Measured at 25°C
3. The optical output power coupled into a polymere optical ber (NA=0.5) is measured with a large area detector at the end of a short ber (about 1m).
4. Driver circuit for the characterization process: see Figure 2 (Vcc=5.0V; installed R_ILED = 100Ohm)
5. ValuedBm=10*log(Valuemeasured/1mW)
6. Only valid for a used LED-current in the range of 10mA to 50mA (DC-Current). Optical Power Temperature Coecient for temperatures between -40°C
and 25°C is almost 0%/K.
7. Value for +25°C to +85°C
20 40 60 100080
0
20
40
60
80
A
T
- Forward Current (mA)
F
I
- Temperature (°C)
0
10
20
30
40
50
60
70
80
90
100
Relative optical output power (%)
Wavelength (nm)
Spectral Emission (100% = Peak Power)
625 675650600 700
0
0.5
1
1.5
2
2.5
Forward Voltage (V)
DC-LED Current (mA)
-18
-16
-14
-12
-10
-8
-6
-4
-2
0
+2
Optical Output Power (dBm)
DC-LED Current (mA)
05 10 15 20 25 30 35 40 45 50
05 10 15 20 25 30 35 40 45 50
thJA
R= 450 K/W
-40°C
25°C
85°C
-40°C
25°C
85°C
Maximum Forward Current
Optical Output Power
Forward Voltage
Figure 1. Maximum Forward Current Figure 2. Measurement circuit
Figure 3. Typical Optical Output Power Figure 4. Typical Forward Voltage
Figure 5. Typical Spectral Emission
SFH757
SN75451BD
GND
GND
GND
Vcc
1A
1A
1Y
GND
Vcc
2B
2A
2Y
R_ILED
51 Ohm
1k Ohm
100 uF
10 uF
Data In
GND
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Data subject to change. Copyright © 2005-2011 Avago Technologies. All rights reserved. Obsoletes AV01-0717EN
AV02-2597EN - December 1, 2011