Data Sheet 1 2005-06-09
Type Ordering Code
SFH551/1-1 Q62702-P3180
SFH551/1-1V Q62702-P3181
Integrated Photo Detector Receiver for Plastic Fiber
Plastic Connector Housing
SFH551/1-1
SFH551/1-1V
Fiber Optics
Features
• Bipolar IC with open-collector output
• Digital output, TTL compatible
• Sensitive in visible and near IR range
• Low switching threshold
• Transfer rate ≤ 5 Mbit/s
• 2.2 mm aperture holds standard 1000 micron
plastic fiber
• No fiber stripping required
• Molded microlens for efficient coupling
Plastic Connector Housing
• Mounting screw attached to the connector
• Interference-free transmission from
light-tight housing
• Transmitter and receiver can be flexibly positioned
• No cross talk
• Auto insertable and wave solderable
• Supplied in tubes
Applications
• Household electronics
• Power electronics
• Optical networks
SFH551/1-1
SFH551/1-1V
Block Diagram
Data Sheet 2 2005-06-09
Block Diagram
Figure 1
A bypass capacitor (100 nF) near the device (distance ≤ 3 cm) is necessary between
ground and VCC. In critical applications the distance may be shorter.
Description
The SFH551/1V is a transimpedance amplifier with digital TTL open collector output
stage and integrated photodiode. The active area of the detector in connection with the
molded microlens gives an efficient coupling from the end of a plastic fiber.
The receiver is fully DC coupled and therefore no line code is needed.
The SFH551/1V includes a Schmitt trigger function to provide stable output states over
the whole dynamic range. For optical input power levels above 6 µW typically the
electrical output will be logical “low” and vice versa. With noise free Vcc and GND no
undefined output signal is possible. SFH551/1 must not be used without shielding the
ambient light, because ambient light causes malfunction when reaching the threshold
level, noise or complete switching the output. Interference free transmission is possible
by using the SFH551/1V with the black plastic connector housing.
Vcc
R
pullup
Data-out
GND
SFH551/1-1
SFH551/1-1V
Technical Data
Data Sheet 3 2005-06-09
Technical Data
Absolute Maximum Ratings
Parameter Symbol Limit Values Unit
min. max.
Operating Temperature Range TOP –40 +85 °C
Storage Temperature Range TSTG –40 +100 °C
Soldering Temperature
(2 mm from case bottom, t ≤ 5 s)
TS260 °C
Supply Voltage Range without Damage VCC –0.5 15 V
Recommended and Guaranteed Maximum
Voltage
5.5 V
Minimum Supply Voltage for Function VCCmin 4V
Minimum Pull-up Resistance
(VCC = 5 V)
Routmin 330 Ω
Output Voltage V0–0.5 15 V
Output Current I050 mA
Power Dissipation (output) P0100 mW
SFH551/1-1
SFH551/1-1V
Technical Data
Data Sheet 4 2005-06-09
Characteristics (TA = 25°C, VCC = 4.75 to 5.25 V)
Parameter Symbol Values Unit
min. typ. max.
Maximum Photosensitivity
Wavelength
λSmax 700 nm
Photosensitivity Spectral Range
(S = 80% Smax)λ600 780 nm
SFH551/1-1 Optical
Threshold Power (λ = 660 nm)
for Output Low
ΦINth ≥ 6
≥ –22
µW
dBm
Maximum Optical Power
(λ = 660 nm)
Maximum Value of tPLH at
Maximum Power
ΦINL 1000
0
µW
dBm
Optical Power for Output High
without Errors (λ = 660 nm)
ΦINH ≤ 0.1
≤ –40
µW
dBm
Propagation Delay
(optical input to electrical output,
with fast optical pulse)
tPHL
tPLH
< 100
< 250
ns
Current Consumption
(without output current)
Icc 4mA
SFH551/1-1
SFH551/1-1V
Package Outlines
Data Sheet 5 2005-06-09
Package Outlines
Figure 2
Figure 3
SFH551/1-1
Dimensions in mm File: 4207
SFH551/1-1V
Dimensions in mm File: 4208
Edition 2005-06-09
Published by Infineon Technologies AG,
St.-Martin-Strasse 53,
81669 München, Germany
© Infineon Technologies AG 2005.
All Rights Reserved.
Attention please!
The information herein is given to describe certain components and shall not be considered as a guarantee of
characteristics.
Terms of delivery and rights to technical change reserved.
We hereby disclaim any and all warranties, including but not limited to warranties of non-infringement, regarding
circuits, descriptions and charts stated herein.
Information
For further information on technology, delivery terms and conditions and prices please contact your nearest
Infineon Technologies Office (www.infineon.com).
Warnings
Due to technical requirements components may contain dangerous substances. For information on the types in
question please contact your nearest Infineon Technologies Office.
Infineon Technologies Components may only be used in life-support devices or systems with the express written
approval of Infineon Technologies, if a failure of such components can reasonably be expected to cause the failure
of that life-support device or system, or to affect the safety or effectiveness of that device or system. Life support
devices or systems are intended to be implanted in the human body, or to support and/or maintain and sustain
and/or protect human life. If they fail, it is reasonable to assume that the health of the user or other persons may
be endangered.
SFH551/1-1
SFH551/1-1V
Revision History: 2005-06-09 DS2
Previous Version: 2004-03-19
