1300 nm Fiber Optic
Transmitter and Receiver
Technical Data
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
m
and 50/125
m Fiber
Compatible with HFBR-0400
Series
Receiver also Specified for
SM Cable Spec (9/125
m)
Applications
Desktop Links for High
Speed LANs
Distance Extension Links
Telecom Switch Systems
TAXlchip
Compatible
Description
The HFBR-0300 Series is
designed to provide the most
cost-effective 1300 nm fiber optic
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
m and
62.5/125
m 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
The HFBR-1312T fiber optic
transmitter contains a 1300 nm
InGaAsP light emitting diode
capable of efficiently launching
optical power into 50/125
m and
62.5/125
m diameter fiber.
Converting the interface circuit
from a HFBR-14XX 820 nm
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
*ST is a registered trademark of AT&T Lightguide Cable Connectors
HFBR-1312T Transmitter
HFBR-2316T Receiver
2
HFBR-1312T Transmitter
HFBR-2316T Receiver
HFBR-0300 Series
Mechanical Dimensions
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.
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.
Note: The "T" in the product
numbers indicates a Threaded ST
connector (panel mountable), for
both transmitter and receiver.
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.
2, 6
ANODE
3
CATHODE
PINFUNCTION
1
2
3
4
5
6
7*
8
N.C.
ANODE
CATHODE
N.C.
N.C.
ANODE
N.C.
N.C.
PIN NO. 1
INDICATOR
BOTTOM VIEW
* 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.
1
4
3
2
8
5
6
7
PIN NO. 1
INDICATOR
BOTTOM VIEW
6
2
3, 7
V
CC
ANALOG
SIGNAL
V
EE
PINFUNCTION
1
2
3*
4
5
6
7*
8
* 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.
N.C.
SIGNAL
V
EE
N.C.
N.C.
V
CC
V
EE
N.C.
1
4
3
2
8
5
6
7
8
1
3
5
2
4
6
7
PIN NO. 1
INDICATOR
PINS 1,4,5,8
0.51 X 0.38
(0.020 X 0.015)
PINS 2,3,6,7
0.46
(0.018)
DIA
12.6
(0.495)
3.81
(0.150)
2.54
(0.100)
3/8-32 UNEF-2A
YYWW
HFBR-X31XT
12.6
(0.495)
5.05
(0.199)
7.05
(0.278)
29.8
(1.174)
PART NUMBER
DATE CODE
DIA.
6.30
(0.248)
7.62
(0.300)
3.60
(0.140)
8.31
(0.327)
10.20
(0.400)
5.10
(0.202)
2.54
(0.100)
1.27
(0.050)
3
HFBR-1312T Transmitter Absolute Maximum Ratings
Parameter
Symbol
Min.
Max.
Unit
Reference
Storage Temperature
T
S
-55
85
C
Operating Temperature
T
A
-40
85
C
Lead Soldering Cycle
260
C
Temperature
Note 8
Lead Soldering Cycle Time
10
sec
Forward Input Current DC
I
FDC
100
mA
Reverse Input Voltage
V
R
1
V
Figure 1. HFBR-4411 Mechanical
Dimensions.
Figure 2. Recommended Cut-out for
Panel Mounting.
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.
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).
Recommended Chemicals
for Cleaning/Degreasing
HFBR-0300 Products
Alcohols (methyl, isopropyl,
isobutyl)
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.
9.80
(0.386)
DIA.
8.0
(0.315)
14.27
(0.563)
9.53
(0.375)
DIA.
INTERNAL TOOTH LOCK WASHER
12.70
(0.50)
DIA.
3/8 - 32 UNEF -
2B THREAD
1.65
(0.065)
TYP.
DIA.
10.41
(0.410)
MAX.
DIA.
ALL DIMENSIONS IN MILLIMETERS AND (INCHES).
HEX-NUT
4
HFBR-1312T Transmitter Output Optical Power and Dynamic Characteristics
Condition
Parameter
Symbol
Min.
Typ.
[1]
Max.
Unit
T
A
I
F, peak
Ref.
Peak Power
P
T62
-16.0
-14.0
-12.5
dBm
25
C
75 mA
Notes
-17.5
-11.5
0-70
C
75 mA
-15.5
-13.5
-12.0
25
C
100 mA
-17.0
-11.0
0-70
C
100 mA
Peak Power
P
T50
-19.5
-17.0
-14.5
dBm
25
C
75 mA
Notes
-21.0
-13.5
0-70
C
75 mA
-19.0
-16.5
-14.0
25
C
100 mA
-20.5
-13.0
0-70
C
100 mA
Optical Overshoot
OS
5
10
%
0-70
C
75 mA
Note 6
Fig. 5
Rise Time
t
r
1.8
4.0
ns
0-70
C
75 mA
Note 7
Fig. 5
Fall Time
t
f
2.2
4.0
ns
0-70
C
75 mA
Note 7
Fig. 5
HFBR-1312T Transmitter Electrical/Optical Characteristics
0 to 70
C unless otherwise specified
Parameter
Symbol
Min.
Typ.
[1]
Max.
Unit
Condition
Ref.
Forward Voltage
V
F
1.1
1.4
1.7
V
I
F
= 75 mA
Fig. 3
1.5
I
F
= 100 mA
Forward Voltage
V
F
/
T
-1.5
mV/
C
I
F
= 75 - 100 mA
Temperature Coefficient
Reverse Input Voltage
V
R
1
4
V
I
R
= 100
A
Center Emission
C
1270
1300
1370
nm
Wavelength
Full Width Half Maximum
FWHM
130
185
nm
Diode Capacitance
C
T
16
pF
V
F
= 0 V, f = 1 MHz
Optical Power Temperature
P
T
/
T
-0.03
dB/
C
I
F
= 75 - 100 mA DC
Coefficient
Thermal Resistance
JA
260
C/W
Note 2
3, 4, 5
3, 4, 5
Fig. 4
Fig. 4
62.5/125
m
NA = 0.275
50/125
m
NA = 0.20
P
T62
P
T50
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;
JC
<
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
W to dBm, the optical power is referenced to 1 mW (1000
W).
Optical power P(dBm) = 10*log[P(
W)/1000
W].
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
m 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.
Figure 4. Normalized Transmitter Output Power vs.
Forward Current.
Figure 3. Typical Forward Voltage and Current
Characteristics.
Figure 5. Recommended Transmitter Drive and Test Circuit.
100
1.1
1.2
1.3
1.4
1.5
1.6
V
F
FORWARD VOLTAGE V
I
F
FORWARD CURRENT mA
90
80
70
60
50
40
20
30
1.2
10
30
50
70
90
RELATIVE POWER RATIO
1.1
0.8
0.7
0.5
0.4
0.3
0.2
I
F
FORWARD CURRENT mA
0.9
1.0
0.6
DATA +
DATA
10
9
13
12
8
14
15
6
7
4
2
5
3
16
0.1 F
+ 5.0 V
75
75
220
1
2.7
24
NE46134
150
NE46134
2.7
220
0.1
F
10 F
TANTALUM
HFBR-1312T
MC10H116A
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.
11
V
bb
2, 6
7
3
MC10H116B
MC10H116C
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