SFH250 and SFH250V
Receiver with analog output
for polymer optical ber applications
Data Sheet
Description
The SFH250 is a low-cost 650nm receiver for optical
data transmission with polymer optical ber. This Si-
pin-photodiode works ne with the AVAGO transmitter
SFH757. According to the intensity of the incident light
the SFH250 generates an analog photocurrent. In typical
applications the SFH250 is operated in reverse-biasing
and is installed in series with a resistor, where the voltage
tapping is taken. By increasing the reverse voltage the
switching times decrease and the SFH250 can be used for
transmission speeds up to 100MBd.
Components of the SFH series are optimized for easy
coupling. No ber stripping is required, only the cut ber
has to be inserted into the selected SFH component.
SFH250
The transparent plastic package has an aperture where a
2.2mm ber end can be inserted. This very easy coupling
method is extremely cost-eective.
SFH250V
The V-housing allows easy coupling of unconnectorized
2.2mm polymer optical ber by means of an axial locking
screw.
Ordering Information
Features
• Fast Switching Time
• Sensitive in visible and near IR Range
• High linearity
• 2.2mm aperture holds standard 980/1000/2200 um
plastic ber
• 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
SFH250 SFH250V
Type Ordering Code
SFH250 SP000063866
SFH250V SP000063852
2
Package Dimensions
SFH250
SFH250V
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
SFH250
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 TJ100 °C
Soldering Temperature
(2mm from case bottom, t≤5s)
TS+260 °C
Reverse Voltage VR30 V
Power Dissipation Ptot 100 mW
Thermal Resistance (Junction/Air) RthJA 750 K/W
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
Maximum Photosensitivity Wavelength lsmax 850 nm 1
Photosensitivity Spectral Range
(S=80%Smax)
ls400 1100 nm 1
Dark Current
(RL=50Ω ,VR=5V, TA=25°C)
IR1 10 nA 2 5
Capacitance
(f=1MHz, VR=0)
CS11 pF 5
Switching Times (RL=50Ω, VR=5.0V, λ=650nm)
T_rise (10%...90%)
T_fall (90%.. 10%)
tr
tf
5
8
12
16
ns
ns
1,2 6, 4
Switching Times (RL=50Ω, VR=30.0V,λ=650nm)
T_rise (10%...90%)
T_fall (90%.. 10%)
tr
tf
3
4
10
10
ns
ns
1,2 6, 4
Photocurrent
(RL=50Ω ,Popt=10uW, VR=5.0V, λ=650nm)
IP2.4 4.4 µA 2,3
Responsitivity
(λ=650nm, RL=50Ω)
RIP 240 440 µA /
mW
3 3
Photocurrent Temperature Coecient
(λ=650nm)
TIP -0.03 % / K 2
* Typical value = mean value at TA=25°C
Note:
1. Measured with optical input power -4dBm(mean) and pattern: “1010” at 5MBd
2. Increase with temperature
3. Not strictly linear behavior. Actual value at high optical input power could vary from the typical value.
0
10
20
30
40
50
60
70
80
90
100
400 500 600 700 800 900 1000 1100 1200
Relative Spectral Sensitivity in %
Wavelength in nm
Spectral Sensitivity
IP / IP25°C
TA in °C
0
2
4
6
8
10
12
0 5 10 15 20 25 30
Capacitance in pF
Reverse Voltage in V
Capacitance
SFH250
RL
IP
+
−
Reverse
Voltage
VR
0
2
4
6
8
10
12
-50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90
tr and tf in ns
TA in °C
Switching times
(measured with RL=50Ω)
tr at VR=5V
tr at VR=20V
tr at VR=30V
tf at VR=5V
tf at VR=20V
tf at VR=30V
0.9
0.95
1
1.05
1.1
-50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90
IP/ IP 25°C
(measured with RL=50Ω, Popt=10µW)
650nm
0
10
20
30
40
50
60
70
80
90
100
110
0.00E+00 5.00E-05 1.00E-04 1.50E-04 2.00E-04 2.50E-04
Photocurrent
(measued with RL=50Ω)
Ip in µA
Optical input Power in W
-40°C
25°C
85°C
Figure 1. Typical Spectral Sensitivity Figure 2. Typical Photocurrent depending on temperature
Figure 3. Typical Photocurrent at constant “Light ON” Figure 4 .Test circuit
Figure 5. Typical Capacitance; measured at TA=25°C with fmeasured =1MHz Figure 6. Typical Switching times; measured with pattern “1010” (5MBd) at
-4dBm (mean) optical input power
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Data subject to change. Copyright © 2005-2011 Avago Technologies. All rights reserved. Obsoletes AV01-0711EN
AV02-3095EN - October 25, 2011