F i n i s a r
Finisar Corporation – 11-Dec-13 Rev B7 Page 1
Product Specification
Quadwire® 40 Gb/s Parallel Active Optical Cable
FCBG410QB1Cxx
PRODUCT FEATURES
Four-channel full-duplex active
optical cable
Electrical interface only
Multirate capability: 1.06Gb/s to
10.5Gb/s per channel
Complies with QSFP MSA high-
density form factor
Reliable VCSEL array technology
using multimode fiber
Available in standard lengths of
3, 5, 10, 15, 20, 30, 50 and 100m*
Hot Pluggable
Flat, ribbonized, LSZH cable
Low power dissipation: <1.3W per
cable end
Commercial operating case
temperature range: 0ºC to 70ºC
RoHS-6 Compliant
APPLICATIONS
Infiniband QDR
40G Ethernet
4G/8G/10G Fibre Channel
HPC Interconnections
PRODUCT SELECTION (Standard Lengths*)
FCBG410QB1C03
3-meter cable
FCBG410QB1C05
5-meter cable
FCBG410QB1C10
10-meter cable
FCBG410QB1C15
15-meter cable
FCBG410QB1C20
20-meter cable
FCBG410QB1C30
30-meter cable
FCBG410QB1C50
50-meter cable
FCBG410QB1CX0
100-meter cable
*For availability of additional cable lengths, please contact Finisar.
FCBG410QB1Cxx Product Specification – December 2013 F i n i s a r
Finisar Corporation – 11-Dec-13 Rev B7 Page 2
I. Pin Descriptions
Figure 1 – QSFP MSA-compliant 38-pin connector
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
FCBG410QB1Cxx Product Specification – December 2013 F i n i s a r
Finisar Corporation – 11-Dec-13 Rev B7 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
Value
Unit
Notes
Module Form Factor
QSFP
Number of Lanes
4 Tx and 4 Rx
Maximum Aggregate Data Rate
42.0
Gb/s
Maximum Data Rate per Lane
10.5
Gb/s
Up to 12.5 Gb/s can be supported.
Please contact Finisar.
Standard Cable Lengths
3, 5, 10, 15, 20, 30, 50, 100
meters
Other lengths may be available
upon request (< 300m)
Protocols Supported
Typical applications include
Infiniband, Fibre Channel,
40G Ethernet, SATA/SAS3
Electrical Interface and Pin-out
38-pin edge connector
Pin-out as defined by the
QSFP MSA
Standard Optical Cable Type
Multimode ribbon fiber
cable assembly, riser-rated
Maximum Power Consumption
per End
1.3
Watts
Varies with output voltage swing
and pre-emphasis settings
(see Figure 5)
Management Interface
Serial, I2C-based, 400 kHz
maximum frequency
As defined by the QSFP MSA
Data Rate Specifications
Symbol
Min
Typ
Max
Units
Ref.
Bit Rate per Lane
BR
1000
10500
Mb/sec
1
Bit Error Ratio
BER
10-12
2
Notes:
1. 1/10 Gigabit Ethernet and 1/2/4/8/10G Fibre Channel compliant.
2. Tested with a PRBS 231-1 test pattern.
FCBG410QB1Cxx Product Specification – December 2013 F i n i s a r
Finisar Corporation – 11-Dec-13 Rev B7 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. Limited by the fiber cable jacket, not the active ends.
2. Non-condensing.
IV. Electrical Characteristics (TOP = 0 to 70C, VCC = 3.3 ± 5% Volts)
Parameter
Symbol
Min
Typ
Max
Unit
Ref.
Supply Voltage
Vcc1,
VccTx,
VccRx
3.15
3.45
V
Supply Current
Icc
350
mA
Link Turn-On Time
Transmit Turn-On Time
2000
ms
1
Transmitter (per Lane)
Differential data input swing
Vin,pp
180
1200
mVpp
2
Differential input threshold
50
mV
Receiver (per Lane)
Differential data output swing
Vout,pp
0
800
mVpp
3,4
Power Supply Ripple Tolerance
PSR
50
mVpp
Notes:
1. From power-on and end of any fault conditions.
2. AC coupled internally. See Figure 2 for input eye mask requirements. Self-biasing 100 differential
input.
3. AC coupled with 100 differential output impedance. See Figure 3 for output eye mask.
4. Settable in 4 discrete steps. See Figure 5 for Vo settings
FCBG410QB1Cxx Product Specification – December 2013 F i n i s a r
Finisar Corporation – 11-Dec-13 Rev B7 Page 5
V. High-Speed Electrical Characteristics per Lane
(TOP = 0 to 70C, VCC = 3.3 ± 5% Volts)
Parameter –Inputs
Symbol
Conditions
Min
Typ
Max
Units
Ref.
Reference Differential Input
Impedance
Zd
100
Ω
Termination Mismatch
ΔZM
5
%
1
Input AC Common Mode Voltage
25
mV
(RMS)
Differential Input Return Loss
SDD11
0.01-4.1 GHz
dB
2
4.1 – 11.1 GHz
dB
3
Differential to Common Mode
Loss
SCD11
0.01-11.1 GHz
-10
dB
Jitter Tolerance (Total)
TJ
0.40
UI
Jitter Tolerance (Deterministic)
DJ
0.15
UI
Notes:
1. See SFF-8431 Rev 3.2 (SFP+) section D.15 Termination Mismatch for definition & test recommendations
2. Reflection coefficient given by equation SDD11(dB)< -12+2*SQRT(f), with f in GHz. See Figure 4.
3. Reflection coefficient given by equation SDD11(dB)< -6.3+13Log10(f/5.5), with f in GHz. See Figure 4.
-500
-400
-300
-200
-100
0
100
200
300
400
500
0 0.2 0.4 0.6 0.8 1
UI
Vdiff (mV)
Figure 2 – Transmitter Input Differential Signal Mask
FCBG410QB1Cxx Product Specification – December 2013 F i n i s a r
Finisar Corporation – 11-Dec-13 Rev B7 Page 6
Parameter –Outputs
Symbol
Conditions
Min
Typ
Max
Units
Ref.
Reference Differential Output Impedance
Zd
100
Ω
Termination Mismatch
ΔZM
5
%
Output AC Common Mode Voltage
15
mVRMS
Output Rise and Fall time (20% to 80%)
tRH, tFH
24
ps
Differential Output Return Loss
SDD22
0.01-4.1 GHz
dB
1
4.1 – 11.1 GHz
dB
2
Common Mode Output Return Loss
SCC22
0.01-2.5 GHz
dB
3
2.5-11.1 GHz
-3
dB
Notes:
1. Reflection coefficient given by equation SDD22(dB)< -12+2*SQRT(f), with f in GHz. See Figure 4.
2. Reflection coefficient given by equation SDD22(dB)< -6.3+13Log10(f/5.5), with f in GHz. See Figure 4.
3. Reflection coefficient given by equation SCC22(dB)< -7+1.6*f, with f in GHz.
Receiver Output Jitter Specification
Symbol
Min
Typ
Max
Units
Ref.
Deterministic Jitter
DJOUT
0.38
UI
1
Total Jitter
TJOUT
0.64
UI
1
Notes:
1. When transmitter input jitter specs are met.
Other Informational Specifications
(not tested)
Symbol
Min
Typ
Max
Units
Ref.
Max Bit Rate NRZ
B
12.5
Gb/s
Low Frequency 3dB Cutoff
fc
175
kHz
Ch / Ch crosstalk
-26
dB
Output Pre-emphasis settings
(user selectable)
PE
0
mV
125
mV
175
mV
325
mV
Pre-Emphasis pulse width
60
90
ps
Channel Latency
TBD
Channels Skew
TBD
Digital clock to data delay
25
ns
Digital output rise/fall times
5
ns
Digital input / output Cap
1
pF
Digital input logic High
2
V
Digital input logic Low
1
V
ESD Signal pads
500
V
HBM
ESD (other pads)
2
kV
HBM
FCBG410QB1Cxx Product Specification – December 2013 F i n i s a r
Finisar Corporation – 11-Dec-13 Rev B7 Page 7
-500
-400
-300
-200
-100
0
100
200
300
400
500
0 0.2 0.4 0.6 0.8 1
UI
Vdiff (mV)
Figure 3 – Receiver Output Differential Signal Mask
-20
-18
-16
-14
-12
-10
-8
-6
-4
-2
0
012345678910 11 12
GHz
dB
Figure 4 – Maximum Transmitter Input and Receiver Output Differential Return Loss
FCBG410QB1Cxx Product Specification – December 2013 F i n i s a r
Finisar Corporation – 11-Dec-13 Rev B7 Page 8
Power (mW)
Pre-Emphasis into 100ohms (mV)
0
125
175
325
Vo (mV)
0
599
317
751
935
971
1075
422
787
971
1007
1111
739
883
1055
1103
1190
Figure 5 – Power Dissipation (mW, maximum) vs. Rx Output Conditions
VI. Memory Map and Control Registers
Compatible with SFF-8436.2 Please see Finisar Application Note AN-2075: Quadwire®
EEPROM Mapping3 for details.
VII. Environmental Specifications
Finisar Quadwire 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
-40
85
°C
VIII. Regulatory Compliance
Finisar Quadwire active optical cables are RoHS-6 Compliant. Copies of certificates are
available at Finisar Corporation upon request.
Quadwire active optical cables are Class 1 laser eye safety compliant per IEC 60825-1.
Fiber cable type is s LSZH/riser-rated, flat ribbon construction. Other cable types can be
supported upon request.
FCBG410QB1Cxx Product Specification – December 2013 F i n i s a r
Finisar Corporation – 11-Dec-13 Rev B7 Page 9
IX. Mechanical Specifications
The Quadwire mechanical specifications are based on QSFP transceiver module
specifications, substituting the MPO connectors with a cable connecting both ends.
Figure 5 – Quadwire 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 Test
8
Cycles
1.5m drop
Flex Test
8.9
Newtons
Twist Test
13.0
Newtons
Module retention
90
N/A
Newtons
No damage below 90N
Host Connector Retention
180
N/A
Newtons
No damage below 180N
FCBG410QB1Cxx Product Specification – December 2013 F i n i s a r
Finisar Corporation – 11-Dec-13 Rev B7 Page 10
Figure 6 – Quadwire production-level product label
X. References
1. INF-8438i – Specification for QSFP (Quad Small Formfactor Pluggable)
Transceiver, Rev 1.0, November 2006
2. SFF-8436 – Specification for QSFP+ Copper and Optical Transceiver, Rev 3.6,
November 2009
3. Application Note AN-2075: Quadwire® EEPROM Mapping, Rev E
XI. 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
