Finisar Corporation January 2016 B3 Page 1
Product Specification
100G Quadwire® EDR QSFP28 Active Optical Cable
FCBN425QB1Cxx
PRODUCT FEATURES
Four-channel full-duplex active
optical cable
Multirate capability: 10 Gb/s to 28
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
Compliant to RoHS Directive 2011/65/EU
APPLICATIONS
Infiniband 4xEDR, 4xFDR, 4xQDR
10/25/40/100G Ethernet
4G/8G/16G/32G Fibre Channel
SAS3
Proprietary HPC Interconnections
PRODUCT SELECTION (Standard Lengths*)
FCBN425QB1C01
1-meter cable
FCBN425QB1C03
3-meter cable
FCBN425QB1C05
5-meter cable
FCBN425QB1C10
10-meter cable
FCBN425QB1C15
15-meter cable
FCBN425QB1C20
20-meter cable
FCBN425QB1C30
30-meter cable
FCBN425QB1C50
50-meter cable
FCBN425QB1CX0
100-meter cable
*For availability of additional cable lengths or cable types, please contact Finisar.
FCBN425QB1Cxx Product Specification
Finisar Corporation January 2016 B3 Page 2
I. Pin Descriptions
Figure 1 – QSFP28-compliant 38-pin connector (per SFF-8679)
Pin
Symbol
Name/Description
Notes
1
GND
Ground
1
2
Tx2n
Transmitter Inverted Data Input
3
Tx2p
Transmitter Non-Inverted Data Input
4
GND
Ground
1
5
Tx4n
Transmitter Inverted Data Input
6
Tx4p
Transmitter Non-Inverted Data Input
7
GND
Ground
1
8
ModSelL
Module Select
9
ResetL
Module Reset
10
Vcc Rx
+3.3 V Power supply receiver
11
SCL
2-wire serial interface clock
12
SDA
2-wire serial interface data
13
GND
Ground
1
14
Rx3p
Receiver Non-Inverted Data Output
15
Rx3n
Receiver Inverted Data Output
16
GND
Ground
1
17
Rx1p
Receiver Non-Inverted Data Output
18
Rx1n
Receiver Inverted Data Output
19
GND
Ground
1
20
GND
Ground
1
21
Rx2n
Receiver Inverted Data Output
22
Rx2p
Receiver Non-Inverted Data Output
23
GND
Ground
1
24
Rx4n
Receiver Inverted Data Output
25
Rx4p
Receiver Non-Inverted Data Output
FCBN425QB1Cxx Product Specification
Finisar Corporation January 2016 B3 Page 3
26
GND
Ground
1
27
ModPrsL
Module Present
28
IntL
Interrupt
29
Vcc Tx
+3.3 V Power supply transmitter
30
Vcc1
+3.3 V Power Supply
31
LPMode
Low Power Mode
32
GND
Ground
1
33
Tx3p
Transmitter Non-Inverted Data Input
34
Tx3n
Transmitter Inverted Data Input
35
GND
Ground
1
36
Tx1p
Transmitter Non-Inverted Data Input
37
Tx1n
Transmitter Inverted Data Input
38
GND
Ground
1
Notes
1. Circuit ground is internally isolated from chassis ground.
II. General Product Characteristics
Parameter
Unit
Notes
Module Form Factor
As defined by SFF-8661
Number of Lanes
Maximum Aggregate Data Rate
Gb/s
112.02 Max. Aggregate Data Rate with
BER 10-6 (per 32G Fibre Channel)
Maximum Data Rate per Lane
Gb/s
28.05 Max. Data Rate per Lane with
BER 10-6 (per 32G Fibre Channel)
Standard Cable Lengths
meters
Other lengths may be available upon
request
Protocols Supported
Electrical Interface and Pin-out
Pin-out as defined by SFF-8679
Standard Optical Cable Type
OFNP. Low Smoke Zero Halogen
(LSZH), round fiber cable also available
Maximum Power Consumption per
End
Watts
Varies with output voltage swing and
pre-emphasis settings
Management Interface
As defined by SFF-8636
Data Rate Specifications
Symbol
Min
Typ
Max
Units
Ref.
Bit Rate per Lane
BR
10.00
25.78
28.05
Gb/sec
1
Bit Error Ratio
BER
10-12
2
Notes:
1. Supports InfiniBand QDR/FDR/EDR, 10/25/40/100 Gigabit Ethernet and 8/16/32G Fibre Channel
applications but at 28.05 Gb/sec BER is limited to 10-6.
2. Tested with a PRBS 231-1 test pattern.
FCBN425QB1Cxx Product Specification
Finisar Corporation January 2016 B3 Page 4
III. Absolute Maximum Ratings
Parameter
Symbol
Min
Typ
Max
Unit
Ref.
Maximum Supply Voltage
Vcc1,
VccTx,
VccRx
-0.5
3.6
V
Storage Temperature
TS
-40
85
C
1
Case Operating Temperature
TOP
0
70
C
Relative Humidity
RH
0
85
%
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 (TOP = 0 to 70C, VCC = 3.3 ± 5% Volts)
NOTE: The Quadwire EDR 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,
VccRx
3.15
3.45
V
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
Common Mode to Differential conversion and
Differential to Common Mode Conversion
SDC22,
SCD22
dB
Common Mode Return Loss
SCC22
-2
dB
Transition Time, 20 to 80%
Tr, Tf
10
ps
Common Mode Voltage
Vcm
-0.3
2.8
V
Eye Width at 1E-15 probability
EW15
0.46
UI
Eye Height at 1E-15 probability
EH15
94
mV
Output electrical specifications (per Lane)
Differential Voltage pk-pk
900
mV
Common Mode Voltage
Vcm
-350
2850
mV
Common Mode Noise RMS
17.5
mV
Differential Termination Resistance Mismatch
10
%
Differential Return Loss
SDD22
dB
Common Mode to Differential conversion and
Differential to Common Mode Conversion
SDC22,
SCD22
Common Mode Return Loss
SCC22
-2
dB
Transition Time, 20 to 80%
Tr, Tf
9.5
ps
Vertical Eye Closure
VEC
5.5
dB
Per OIF CEI-28G-VSR
and CAUI-4
requirements
Per OIF CEI-28G-VSR
and CAUI-4 requirements
FCBN425QB1Cxx Product Specification
Finisar Corporation January 2016 B3 Page 5
Eye Width at 1E-15 probability
EW15
0.57
UI
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-21507.
VI. Environmental Specifications
Finisar Quadwire EDR Active Optical Cables have an operating temperature range from
0°C to +70°C case temperature.
Environmental Specifications
Symbol
Min
Typ
Max
Units
Ref.
Case Operating Temperature
Top
0
70
°C
Storage Temperature
Tsto
-10
70
°C
VII. Regulatory Compliance
Finisar Quadwire EDR Active Optical Cables are RoHS-6 Compliant. Copies of certificates
to be available at Finisar Corporation upon request.
Quadwire EDR 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 Quadwire EDR 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.
FCBN425QB1Cxx Product Specification
Finisar Corporation January 2016 B3 Page 6
Figure 2 – Quadwire EDR mechanical drawing
Insertion, Extraction and Retention
Forces
Min
Max
Units
Notes
Cable Proof (Tensile) Test (0º)
44.0
Newtons
Cable Proof (Tensile) Test (90º)
33.0
Newtons
Impact
8
Cycles
1.5m drop
Flex
8.9
Newtons
Twist
13.0
Newtons
Module retention
90
N/A
Newtons
No damage below 90N
Host Connector Retention
180
N/A
Newtons
No damage below 180N
FCBN425QB1Cxx Product Specification
Finisar Corporation January 2016 B3 Page 7
IX. References
1. InfiniBand™ Architecture Release, Vol. 2 – Physical Specifications, Rev. 1.3,
November 2012.
2. SFF-8665 – QSFP+ 28Gb/s 4X Pluggable Transceiver Solution (QSFP28), Rev 1.8,
May, 2013.
3. SFF-8636 – Specification for Common Management Interface, Rev 1.7, January
2014.
4. “CAUI-4” Retimed 4x25G electrical interface, to be defined by IEEE 802.3
5. CEI-28G-VSR Implementation Agreement, per OIF 2012.290.00
6. Directive 2011/65/EU of the European Council Parliament and of the Council, “on
the restriction of the use of certain hazardous substances in electrical and electronic
equipment.” Certain products may use one or more exemptions as allowed by the
Directive.
7. “Application Note AN-2150: EDR Quadwire EEPROM Mapping.”
X. For More Information
Finisar Corporation
1389 Moffett Park Drive
Sunnyvale, CA 94089-1133
Tel. 1-408-548-1000
Fax 1-408-541-6138
sales@finisar.com
www.finisar.com