Product Specification
100G Quadwire
®
QSFP28 Active Optical Cable
FCBN425QE1Cxx
PRODUCT FEATURES
Four-channel full-duplex active
optical cable
Multirate capability: 10 Gb/s to 25
Gb/s per channel
QSFP28 high-density form factor
Reliable VCSEL array technology
using multimode fiber
Round OFNP-rated cable
Hot Pluggable
Low power dissipation: <3.5W per
cable end (<2.5W with CDRs off)
Commercial operating case
temperature range: 0ºC to 70ºC
RoHS-6 Compliant
10/25/40/100G Ethernet
APPLICATIONS
Compliant to RoHS Directive 2011/65/EU
PRODUCT SELECTION (Standard Lengths*)
FCBN425QB1C01
FCBN425QB1C03
FCBN425QB1C05
FCBN425QB1C10
FCBN425QB1C15
FCBN425QB1C20
FCBN425QB1C30
FCBN425QB1C50
FCBN425QB1CX0
1-meter cable
3-meter cable
5-meter cable
10-meter cable
15-meter cable
20-meter cable
30-meter cable
50-meter cable
100-meter cable
*For availability of additional cable lengths or cable types, please contact Finisar.
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FCBN425QB1Cxx Product Specification
I.
Pin Descriptions
Figure 1 – QSFP28-compliant 38-pin connector (per SFF-8679)
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
Symbol
GND
Tx2n
Tx2p
GND
Tx4n
Tx4p
GND
ModSelL
ResetL
Vcc Rx
SCL
SDA
GND
Rx3p
Rx3n
GND
Rx1p
Rx1n
GND
GND
Rx2n
Rx2p
GND
Rx4n
Rx4p
Name/Description
Ground
Transmitter Inverted Data Input
Transmitter Non-Inverted Data Input
Ground
Transmitter Inverted Data Input
Transmitter Non-Inverted Data Input
Ground
Module Select
Module Reset
+3.3 V Power supply receiver
2-wire serial interface clock
2-wire serial interface data
Ground
Receiver Non-Inverted Data Output
Receiver Inverted Data Output
Ground
Receiver Non-Inverted Data Output
Receiver Inverted Data Output
Ground
Ground
Receiver Inverted Data Output
Receiver Non-Inverted Data Output
Ground
Receiver Inverted Data Output
Receiver Non-Inverted Data Output
Notes
1
1
1
1
1
1
1
1
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FCBN425QB1Cxx Product Specification
26
27
28
29
30
31
32
33
34
35
36
37
38
GND
ModPrsL
IntL
Vcc Tx
Vcc1
LPMode
GND
Tx3p
Tx3n
GND
Tx1p
Tx1n
GND
Ground
Module Present
Interrupt
+3.3 V Power supply transmitter
+3.3 V Power Supply
Low Power Mode
Ground
Transmitter Non-Inverted Data Input
Transmitter Inverted Data Input
Ground
Transmitter Non-Inverted Data Input
Transmitter Inverted Data Input
Ground
1
1
1
1
Notes
1. Circuit ground is internally isolated from chassis ground.
II.
General Product Characteristics
Value
QSFP28
4 Tx and 4 Rx
103.125
25.781
1, 3, 5, 10, 15, 20, 30, 50,
100
Typical applications include
InfiniBand QDR/FDR/EDR,
10/25/40G/100G Ethernet,
4/8/16/32G Fibre Channel,
SAS3
38-pin edge connector
Multimode round fiber
cable, plenum-rated
3.5 (retimed Tx)
2.5 (unretimed)
Serial, I2C-based, 450 kHz
maximum frequency
Symbol
BR
BER
BER
Min
10.000
Unit
Notes
As defined by SFF-8661
Parameter
Module Form Factor
Number of Lanes
Maximum Aggregate Data Rate
Maximum Data Rate per Lane
Standard Cable Lengths
Gb/s
Gb/s
meters
Other lengths may be available upon
request
Protocols Supported
Electrical Interface and Pin-out
Standard Optical Cable Type
Maximum Power Consumption per
End
Management Interface
Watts
Pin-out as defined by SFF-8679
OFNP. Low Smoke Zero Halogen
(LSZH), round fiber cable also available
Varies with output voltage swing and
pre-emphasis settings
As defined by SFF-8636
Data Rate Specifications
Bit Rate per Lane
Pre-FEC Bit Error Ratio
Post-FEC Bit Error Ratio
Typ
25.781
Max
25.781
10
-6
10
-12
Units
Gb/sec
Ref.
1
2
2, 3
Notes:
1. Supports 10/25/40/100 Gigabit Ethernet applications.
2. Tested with a PRBS 2
31
-1 test pattern.
3. Assumes FEC provided by host system.
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FCBN425QB1Cxx Product Specification
III.
Absolute Maximum Ratings
Symbol
Vcc1,
VccTx,
VccRx
T
S
T
OP
RH
Min
-0.5
Typ
Max
3.6
Unit
V
C
C
%
Ref.
Parameter
Maximum Supply Voltage
Storage Temperature
Case Operating Temperature
Relative Humidity
-40
0
0
85
70
85
1
2
Notes:
1. Assumes no mechanical load force on the unit. Ensuring no mechanical load force requires a cable bend
radius of >105 mm within 100 mm of either cable end module and >60 mm on the rest of the cable.
2. Non-condensing.
IV.
Electrical Characteristics
(T
OP
= 0 to 70C, V
CC
= 3.3 ± 5% Volts)
NOTE: The 100G Quadwire requires an electrical connector compliant with SFF-8662 or SFF-8672 be used
on the host board to guarantee its electrical interface specification. Please check with your connector supplier.
Parameter
Symbol
Min
Typ
Max
Unit
Ref.
Supply Voltage
Vcc1,
VccTx,
3.15
3.45
V
VccRx
Supply Current
Icc
1010
mA
Power Dissipation per cable end
P
3.5
W
1, 2
Link Turn-On Time
Transmit turn-on time
2000
ms
3
Input electrical specifications (per Lane)
Differential Voltage pk-pk
900
mV
Common Mode Noise RMS
17.5
mV
Differential Termination Resistance Mismatch
10
%
Differential Return Loss
SDD22
dB
Per OIF CEI-28G-VSR
Common Mode to Differential conversion and
SDC22,
dB
and CAUI-4
Differential to Common Mode Conversion
SCD22
requirements -2
Common Mode Return Loss
SCC22
dB
Transition Time, 20 to 80%
Tr, Tf
10
ps
Common Mode Voltage
Vcm
-0.3
2.8
V
UI
Eye Width at 1E-15 probability
EW15
0.46
Eye Height at 1E-15 probability
Output electrical specifications (per Lane)
Differential Voltage pk-pk
Common Mode Voltage
Common Mode Noise RMS
Differential Termination Resistance Mismatch
Differential Return Loss
Common Mode to Differential conversion and
Differential to Common Mode Conversion
Common Mode Return Loss
Transition Time, 20 to 80%
Vertical Eye Closure
Eye Width at 1E-15 probability
EH15
94
900
-350
2850
17.5
10
Per OIF CEI-28G-VSR
and CAUI-4 requirements
-2
9.5
5.5
0.57
mV
mV
mV
mV
%
dB
Vcm
SDD22
SDC22,
SCD22
SCC22
Tr, Tf
VEC
EW15
dB
ps
dB
UI
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FCBN425QB1Cxx Product Specification
Eye Height at 1E-15 probability
EH15
228
mV
Notes:
1. Maximum total power value is specified across the full temperature and voltage range.
2. Settable in various discrete steps via the I2C interface.
3. From power-on and end of any fault conditions.
V.
Memory Map and Control Registers
Compatible with SFF-8636. Please see Finisar Application Note AN-2150
7
.
VI.
Environmental Specifications
Finisar 100G Quadwire Active Optical Cables have an operating temperature range from
0°C to +70°C case temperature.
Environmental Specifications
Case Operating Temperature
Storage Temperature
Symbol
T
op
T
sto
Min
0
-10
Typ
Max
70
70
Units
°C
°C
Ref.
VII.
Regulatory Compliance
Finisar 100G Quadwire Active Optical Cables are RoHS-6 Compliant. Copies of certificates
to be available at Finisar Corporation upon request.
100G Quadwire Active Optical Cables are Class 1 laser eye safety compliant per IEC
60825-1.
Standard fiber cable type is round-section construction, plenum-rated. Other cable types can
be supported upon request such as LSZH, round-section construction.
VIII. Mechanical Specifications
The 100G Quadwire mechanical specifications are compliant with the QSFP28 transceiver
module specifications (as defined in SFF-8661), substituting the MPO12 receptacle with a
fiber optics cable connecting both ends.
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