methylene chloride, or N-methylpyrolldone. Also, Avago
does not recommend the use of cleaners that use
halogenated hydrocarbons because of their potential
environmental harm.
Handling and Design Information
When soldering, it is advisable to leave the protective cap
on the unit to keep the optics clean. Good system per-
formance requires clean port optics and cable ferrules to
avoid obstructing the optical path. Clean compressed air
is often sufficient to remove particles of dirt; methanol on
a cotton swab also works well.
CAUTION
: The small junction size inherent in the design of these components increases the components’ susceptibility
to damage from electrostatic discharge (ESD). It is advised that normal static precautions be taken in handling
and assembly of these components to prevent damage and/or degradation which may be induced by ESD.
Specified Link Performance
0° C to +70° C unless otherwise noted.
Parameter
Link Distance with HFBR-1505AZ/2505AZ
or HFBR-1515BZ/2515BZ
Link Distance with HFBR-1505CZ/2505CZ
Pulse Width Distortion with HFBR-1505AZ/2505AZ
or HFBR-1515BZ/2515BZ
Pulse Width Distortion with HFBR-1505CZ/2505CZ
Symbol
1
1
PWD
PWD
Min.
0.1
0.1
0.1
0.1
–30
–125
Max.
40
200
50
400
+30
+125
Unit
m
m
m
m
ns
ns
Condition
POF
HCS
POF
HCS
25% to 75%
duty cycle
arbitrary
duty cycle
Reference
Notes 1, 2, 3, 4, 6
Notes 1, 2, 3, 5, 6
Notes 1, 2, 3, 4, 7
Notes 1, 2, 3, 5, 7
Note 1
Note 1
Notes:
1. With recommended Tx and Rx circuits (60 mA nominal drive current).
2. POF HFBR-ExxyyyZ 0.23 dB/m worst case attentuation.
3. HCS
10 dB/km worst case attenuation.
4. Including a 3 dB optical safety margin accounting for link service lifetime.
5. Including a 2 dB optical safety margin accounting for link service lifetime.
6. Signaling rate DC to 10 MBd.
7. Signaling rate DC to 2 MBd.
2
HFBR-15X5XZ Transmitters
The HFBR-15X5XZ transmitter incorporates a 650 nm LED
in a light gray nonconductive plastic housing. The high
light output power enables the use of both plastic optical
fiber (POF) and Hard Clad Silica (HCS
). This transmitter
can be operated up to 10 MBd using a simple driver circuit.
The HFBR-1505XZ is compatible with SMA connectors,
while the HFBR-1515XZ mates with ST
connectors.
PIN
1
4
5
6
7
8
4
5
6
7
1
8
BOTTOM VIEW,
HFBR-15x5xZ
SEE NOTE 10
FUNCTION
CONNECTED TO PIN 4
CONNECTED TO PIN 1
GND
GND
CATHODE
ANODE
Absolute Maximum Ratings
Parameter
Storage and Operating Temperature
Peak Forward Input Current
Average Forward Input Current
Reverse Input Voltage
Lead Soldering Cycle
Temp
Time
Symbol
T
S,O
I
F,PK
I
F,AVG
V
R
T
SOL
Min.
-40
Max.
85
90
60
3
260
10
Units
°C
mA
mA
V
°C
s
Reference
Note 6
Note 7
Electrical/Optical Characteristics
0° C to 70° C unless otherwise noted.
Parameter
Optical Power Temperature
Coefficient
Forward Voltage
Forward Voltage Temperature
Coefficient
Breakdown Voltage
Peak Emission Wavelength
Full Width Half Max
Diode Capacitance
Thermal Resistance
Rise Time
Fall Time (90% to 10%)
Symbol
P
T
/T
V
F
V
F
/T
V
BR
PK
FWHM
C
O
JC
(10% to 90%)
t
f
Min.
Typ.
[1]
-0.02
Max.
Unit
dB/°C
Condition
Ref.
1.8
2.1
-1.8
2.65
V
mV/°C
V
I
F,dc
= 60 mA
Fig. 1
Fig. 1
3.0
640
13
650
21
60
140
660
30
I
F,dc
= -10
A
Fig. 3
Fig. 3
V
F
= 0 V, f = 1 MHz
Note 4, 5
10% to 90%
I
F
= 60 mA
nm
nm
pF
°C/W
t
r
10
13
ns
ns
EYE SAFETY:
The HFBR-15x5xZ is a Class 1 LED Product and eye safe when used within the data sheet limits and under normal
operating conditions. This includes all reasonably foreseeable single fault conditions per IEC60825-1 and amendments.
3
Peak Output Power
0° C to +70° C unless otherwise noted.
Model Number
HFBR-1505AZ SERCOS
Symbol
P
T
Min.
–10.5
–7.5
–18.0
Max.
–5.5
–3.5
–10
–5.5
–3.5
–8.5
0.0
–8.5
Unit
dBm
Condition
POF, I
F, dc
= 35 mA
POF, I
F, dc
= 60 mA
HCS
, I
F, dc
= 60 mA
POF, I
F, dc
= 35 mA
POF, I
F, dc
= 60 mA
HCS
, I
F, dc
= 60 mA
POF, I
F, dc
= 60 mA
HCS
, I
F, dc
= 60 mA
Reference
Notes 2, 3, 11
Figure 2
HFBR-1515BZ PROFIBUS
–10.5
–7.5
–18.0
Notes 2, 3, 11
Figure 2
HFBR-1505CZ INTERBUS-S
–6.2
–16.9
Notes 3, 8, 9
Figure 2
Notes:
1. Typical data at 25° C.
2. Optical power measured at the end of 0.5 meters of 1 mm diameter plastic optical fiber with a large area detector.
3. Minimum and maximum values for PT over temperature are based on a fixed drive current. The recommended drive circuit has temperature
compensation which reduces the variation in PT over temperature, refer to Figures 4 and 6.
4. Thermal resistance is measured with the transmitter coupled to a connector assembly and fiber, and mounted on a printed circuit board.
5. To further reduce the thermal resistance, the cathode trace should be made as large as is consistent with good RF circuit design.
6. For I
F,PK
> 60 mA, the duty factor must maintain I
F,AVG
≤ 60 mA and pulse width ≤ 1s.
7. 1.6 mm below seating plane.
8. Minimum peak output power at 25° C is –5.3 dBm (POF) and –16.0 dBm (HCS
) for 1505C series only.
9. Optical power measured at the end of 1 meter of 1 mm diameter plastic or 200
m
hard clad silica optical fiber with a large area detector.
10. Pins 1 and 4 are for mounting and retaining purposes, but are electrically connected; pins 5 and 6 are electrically isolated. It is recommended that
pins 1, 4, 5, and 6 all be connected to ground to reduce coupling of electrical noise.
11. Output power with 200
m
hard clad silica optical fiber assumes a typical –10.5 dB difference compared to 1 mm plastic optical fiber.
4
2.5
P
T
– NORMALIZED OUTPUT POWER – dB
V
F
– FORWARD VOLTAGE – V
2.3
2.1
1.9
1.7
1.5
85° C
-40° C
0° C
25° C
70° C
10
-40° C
0
-10
85° C
-20
-30
-40
25° C
1
10
I
F,DO
– TRANSMITTER DRIVE CURRENT – mA
100
1
10
I
F,DO
– TRANSMITTER DRIVE CURRENT – mA
100
Figure 1. Typical forward voltage vs. drive current
Figure 2. Typical normalized optical power vs. drive current
NORMALIZED SPECTRAL OUTPUT POWER
1.4
1.2
-40° C
NORMALIZED OUTPUT POWER
0° C
1.2
V
CC
= 5.25 V
1.1
1.0
0.9
V
CC
= 4.75 V
0.8
0.7
-40
V
CC
= 5.0 V
1.0
0.8
0.6
0.4
0.2
0
610
630
25° C
70° C
85° C
650
WAVELENGTH – nm
670
690
-20
0
20
40
TEMPERATURE – °C
60
80
Figure 3. Typical normalized optical spectra
Figure 4. Typical normalized optical power vs. temperature
(in recommended drive circuit)
2
1
V
CC
= 5.25 V
0
PWD – ns
V
CC
= 5.0 V
-1
-2
-3
V
CC
= 4.75 V
-4
-5
-40
-20
0
20
40
TEMPERATURE – °C
60
80
Figure 5. Typical optical pulse width distortion vs. temperature and power
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