1300 nm Fiber Optic
Transmitter and Receiver
Technical Data
HFBR-1312T Transmitter
HFBR-2316T Receiver
Features
• Low Cost Fiber Optic Link
• Signal Rates over 155
Megabaud
• 1300 nm Wavelength
• Link Distances over 5 km
• Dual-in-line Package Panel-
Mountable ST* and SC
Connector Receptacles
• Auto-Insertable and Wave-
Solderable
• Specified with 62.5/125
µ
m
and 50/125
µ
m Fiber
• Compatible with HFBR-0400
Series
• Receiver also Specified for
SM Cable Spec (9/125
µ
m)
Applications
• Desktop Links for High
Speed LANs
• Distance Extension Links
• Telecom Switch Systems
• TAXlchip
®
Compatible
links for a wide variety of data
communication applications from
low-speed distance extenders up
to SONET OC-3 signal rates.
Pinouts identical to Agilent
HFBR-0400 Series allow
designers to easily upgrade their
820 nm links for farther distance.
The transmitter and receiver are
compatible with two popular
optical fiber sizes: 50/125
µm
and
62.5/125
µm
diameter. This
allows flexibility in choosing a
fiber size. The 1300 nm wave-
length is in the lower dispersion
and attenuation region of fiber,
and provides longer distance
capabilities than 820 nm LED
technology. Typical distance
capabilities are 2 km at 125 MBd
and 5 km at 32 MBd.
transmitter to the HFBR-1312T
requires only the removal of a few
passive components.
Receiver
The HFBR-2316T receiver con-
tains an InGaAs PIN photodiode
and a low-noise transimpedance
preamplifier that operate in the
1300 nm wavelength region. The
HFBR-2316T receives an optical
signal and converts it to an analog
voltage. The buffered output is an
emitter-follower, with frequency
response from DC to typically 125
MHz. Low-cost external compo-
nents can be used to convert the
analog output to logic compatible
signal levels for a variety of data
formats and data rates. The
Transmitter
The HFBR-1312T fiber optic
transmitter contains a 1300 nm
InGaAsP light emitting diode
capable of efficiently launching
optical power into 50/125
µm
and
62.5/125
µm
diameter fiber.
Converting the interface circuit
from a HFBR-14XX 820 nm
Description
The HFBR-0300 Series is
designed to provide the most
cost-effective 1300 nm fiber optic
*ST is a registered trademark of AT&T Lightguide Cable Connectors
2
HFBR-1312T Transmitter
HFBR-2316T Receiver
6
HFBR-0300 Series
Mechanical Dimensions
PART NUMBER
DATE CODE
5.05
(0.199)
2, 6
ANODE
3
CATHODE
V
CC
ANALOG
SIGNAL
V
EE
2
3, 7
4
3
2
1
BOTTOM VIEW
5
6
7
8
PIN NO. 1
INDICATOR
4
3
2
1
BOTTOM VIEW
5
6
7
8
PIN NO. 1
INDICATOR
12.6
(0.495)
YYWW
HFBR-X31XT
7.05
(0.278)
DIA.
29.8
(1.174)
12.6
(0.495)
PINFUNCTION
1† N.C.
2
ANODE
3
CATHODE
4† N.C.
5† N.C.
6
ANODE
7*
N.C.
8† N.C.
* PIN 7 IS ELECTRICALLY ISOLATED FROM
PINS 1, 4, 5, AND 8, BUT IS CONNECTED
TO THE HEADER.
† PINS 1, 4, 5, AND 8 ARE ISOLATED FROM
THE INTERNAL CIRCUITRY, BUT ARE
ELECTRICALLY CONNECTED TO EACH OTHER.
PINFUNCTION
1†
N.C.
2
SIGNAL
3*
V
EE
4†
N.C.
5†
N.C.
6
V
CC
7*
V
EE
8†
N.C.
3.81
(0.150)
2.54
(0.100)
3/8-32 UNEF-2A
* PINS 3 AND 7 ARE ELECTRICALLY
CONNECTED TO THE HEADER.
† PINS 1, 4, 5, AND 8 ARE ISOLATED FROM
THE INTERNAL CIRCUITRY, BUT ARE
ELECTRICALLY CONNECTED TO EACH OTHER.
7.62
(0.300)
6.30
(0.248)
8.31
(0.327)
10.20
(0.400)
3.60
(0.140)
2.54
(0.100)
1.27
(0.050)
5.10
(0.202)
HFBR-2316T is pin compatible
with HFBR-24X6 receivers and
can be used to extend the
distance of an existing application
by substituting the HFBR-2316T
for the HFBR-2416.
Note: The “T” in the product
numbers indicates a Threaded ST
connector (panel mountable), for
both transmitter and receiver.
PINS 1,4,5,8
0.51 X 0.38
(0.020 X 0.015)
PINS 2,3,6,7
0.46 DIA
(0.018)
4
2 3
1
8
PIN NO. 1
INDICATOR
Handling and Design
Information
When soldering, it is advisable to
leave the protective cap on the
unit to keep the optics clean.
Good system performance
requires clean port optics and
cable ferrules to avoid obstructing
the optical path. Clean com-
pressed air is often sufficient to
remove particles of dirt; methanol
on a cotton swab also works well.
Package Information
HFBR-0300 Series transmitters
and receivers are housed is a
dual-in-line package made of high
strength, heat resistant, chem-
ically resistant, and UL V-0 flame
retardant plastic. Transmitters are
identified by the brown port
color; receivers have black ports.
The package is auto-insertable
and wave solderable for high
volume production applications.
7
6
5
3
Panel Mounting
Hardware
The HFBR-4411 kit consists of
100 nuts and 100 washers with
dimensions as shown in Figure 1.
These kits are available from
Agilent or any authorized distrib-
utor. Any standard size nut and
washer will work, provided the
total thickness of the wall, nut,
and washer does not exceed
0.2 inch (5.1mm).
When preparing the chassis wall
for panel mounting, use the
mounting template in Figure 2.
When tightening the nut, torque
should not exceed 0.8 N-m
(8.0 in-lb).
Aliphatics (hexane, heptane)
Other (soap solution, naphtha)
Do not use partially halogenated
hydrocarbons (such as 1.1.1 tri-
chloroethane), ketones (such as
MEK), acetone, chloroform, ethyl
acetate, methylene dichloride,
phenol, methylene chloride, or N-
methylpyrolldone. Also, Agilent
does not recommend the use of
cleaners that use halogenated
hydrocarbons because of their
potential environmental harm.
Recommended Chemicals
for Cleaning/Degreasing
HFBR-0300 Products
Alcohols (methyl, isopropyl,
isobutyl)
3/8 - 32 UNEF -
2B THREAD
9.53 DIA.
(0.375)
12.70 DIA.
(0.50)
1.65
(0.065)
HEX-NUT
14.27 TYP.
(0.563) DIA.
10.41 MAX.
(0.410) DIA.
INTERNAL TOOTH LOCK WASHER
ALL DIMENSIONS IN MILLIMETERS AND (INCHES).
9.80
(0.386)
DIA.
8.0
(0.315)
Figure 1. HFBR-4411 Mechanical
Dimensions.
Figure 2. Recommended Cut-out for
Panel Mounting.
HFBR-1312T Transmitter Absolute Maximum Ratings
Parameter
Storage Temperature
Operating Temperature
Lead Soldering Cycle
Temperature
Lead Soldering Cycle Time
Forward Input Current DC
Reverse Input Voltage
I
FDC
V
R
Symbol
T
S
T
A
Min.
-55
-40
Max.
85
85
260
10
100
1
Unit
°C
°C
°C
Note 8
sec
mA
V
Reference
CAUTION: The small junction sizes inherent to the design of this bipolar component increase the component's
susceptibility to damage from electrostatic discharge (ESD). It is advised that normal static precautions be
taken in handling and assembly of this component to prevent damage and/or degradation which may be
induced by ESD.
4
HFBR-1312T Transmitter Electrical/Optical Characteristics
0 to 70°C unless otherwise specified
Parameter
Forward Voltage
Forward Voltage
Temperature Coefficient
Reverse Input Voltage
Center Emission
Wavelength
Full Width Half Maximum
Diode Capacitance
Optical Power Temperature
Coefficient
Thermal Resistance
Symbol
V
F
∆V
F
/∆T
V
R
λ
C
FWHM
C
T
∆P
T
/∆T
Θ
JA
1
1270
Min. Typ.
[1]
Max.
1.1
1.4
1.5
-1.5
4
1300
130
16
-0.03
260
1370
185
mV/°C
V
nm
nm
pF
dB/°C
°C/W
V
F
= 0 V, f = 1 MHz
I
F
= 75 - 100 mA DC
Note 2
1.7
Unit
V
Condition
I
F
= 75 mA
I
F
= 100 mA
I
F
= 75 - 100 mA
I
R
= 100
µA
Ref.
Fig. 3
HFBR-1312T Transmitter Output Optical Power and Dynamic Characteristics
Condition
Parameter
Peak Power
62.5/125
µm
NA = 0.275
Symbol
P
T62
P
T62
Min. Typ.
[1]
Max.
-16.0
-17.5
-15.5
-17.0
Peak Power
50/125
µm
NA = 0.20
P
T50
P
T50
-19.5
-21.0
-19.0
-20.5
Optical Overshoot
Rise Time
Fall Time
OS
t
r
t
f
5
1.8
2.2
-16.5
-17.0
-13.5
-14.0
-12.5
-11.5
-12.0
-11.0
-14.5
-13.5
-14.0
-13.0
10
4.0
4.0
%
ns
ns
dBm
Unit
dBm
T
A
25°C
0-70°C
25°C
0-70°C
25°C
0-70°C
25°C
0-70°C
0-70°C
0-70°C
0-70°C
I
F, peak
75 mA
75 mA
100 mA
100 mA
75 mA
75 mA
100 mA
100 mA
75 mA
75 mA
75 mA
Note 6
Fig. 5
Note 7
Fig. 5
Note 7
Fig. 5
Notes
3, 4, 5
Fig. 4
Ref.
Notes
3, 4, 5
Fig. 4
5
Transmitter Notes:
1. Typical data are at T
A
= 25°C.
2. Thermal resistance is measured with the transmitter coupled to a connector assembly and mounted on a printed circuit board;
Θ
JC
<
Θ
JA
.
3. Optical power is measured with a large area detector at the end of 1 meter of mode stripped cable, with an ST* precision ceramic
ferrule (MIL-STD-83522/13), which approximates a standard test connector. Average power measurements are made at 12.5 MHz
with a 50% duty cycle drive current of 0 to I
F,peak
; I
F,average
= I
F,peak
/2. Peak optical power is 3 dB higher than average optical
power.
4. When changing from
µW
to dBm, the optical power is referenced to 1 mW (1000
µW).
Optical power P(dBm) = 10*log[P(µW)/1000µW].
5. Fiber NA is measured at the end of 2 meters of mode stripped fiber using the far-field pattern. NA is defined as the sine of the half
angle, determined at 5% of the peak intensity point. When using other manufacturer’s fiber cable, results will vary due to differing
NA values and test methods.
6. Overshoot is measured as a percentage of the peak amplitude of the optical waveform to the 100% amplitude level. The 100%
amplitude level is determined at the end of a 40 ns pulse, 50% duty cycle. This will ensure that ringing and other noise sources have
been eliminated.
7. Optical rise and fall times are measured from 10% to 90% with 62.5/125
µm
fiber. LED response time with recommended test
circuit (Figure 3) at 25 MHz, 50% duty cycle.
8. 2.0 mm from where leads enter case.
100
90
I
F
– FORWARD CURRENT – mA
1.2
1.1
RELATIVE POWER RATIO
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
80
70
60
50
40
30
20
1.1
1.2
1.3
1.4
1.5
1.6
10
30
50
70
90
V
F
– FORWARD VOLTAGE – V
I
F
– FORWARD CURRENT – mA
Figure 3. Typical Forward Voltage and Current
Characteristics.
Figure 4. Normalized Transmitter Output Power vs.
Forward Current.
0.1 µF
+ 5.0 V
10 µF
TANTALUM
0.1
µF
HFBR-1312T
2, 6
7
3
150
Ω
1
DATA +
DATA –
5
4
10
9
11
13
12
16
3
75
Ω
NE46134
75
Ω
220
Ω
2.7
Ω
2.7
Ω
24
Ω
MC10H116A
2
7
MC10H116B
NE46134
220
Ω
6
V
bb
15
MC10H116C
14
8
NOTES:
1. ALL RESISTORS ARE 5% TOLERANCE.
2. BEST PERFORMANCE WITH SURFACE MOUNT COMPONENTS.
3. DIP MOTOROLA MC10H116 IS SHOWN, PLCC MAY ALSO BE USED.
Figure 5. Recommended Transmitter Drive and Test Circuit.
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