Specifications
Absolute maximum ratings are those beyond which the device may be damaged.
Parameter | Min | Max | Units |
Supply voltage | -0.3 | 3.6 | V |
Data input voltage | -0.3 | 3.6 | V |
Control input voltage | -0.3 | 3.6 | V |
This table shows the environmental specifications for the product.
Parameter | Min | Max | Units |
Storage temperature | -40 | 85 | °C |
This section shows the range of values for normal operation.
Parameter | Min | Typ | Max | Units |
Supply voltage (Vcc) | 3.135 | 3.3 | 3.465 | V |
Power consumption | --- | --- | 0.1 | W |
Operating case temperature | 0 | 70 | °C | |
Operating relative humidity | 5 | 85 | % |
Parameter | Min | Typ | Max | Units |
Characteristic Impedance | 90 | 100 | 110 | Ω |
Time propagation delay1 | --- | --- | 4.5 | ns/m |
1 Informative
Note: Minimum insertion loss for up to 1m cable length is 6dB @ 12.89GHz.
Page 00h/ | Register Name | Description |
0 | Identifier | 11h: QSFP28 side of the cable |
1 | Status | 06h: Support for SFF-8436 Rev. 2.0 |
128 | Identifier | 11h: QSFP28 |
130 | Connector | 23h: Direct attach assemblies with no separable interfaces |
146 | Length | Length in units of 1 m of direct attach copper cable |
147 | Device technology | A0h: Un-equalized copper cable (passive) |
148-163 | Vendor name | NVIDIA: ASCII |
165-167 | QSFP vendor IEEE number | 00-02-C9: NVIDIA OUI. |
168-183 | Part number | MCP7F00-A0XXXXXX: Part number per backshell label (ASCII) |
184-185 | Product revision | ZZ: Revision per backshell label (ASCII) |
186 | Attenuation 2.5GHz | Typical attenuation measured during production test, in 1dB. [dB] |
187 | Attenuation 5GHz | |
188 | Attenuation 7GHz | |
189 | Attenuation 12.9GHz | |
190 | Max case temperature | 46h: Support for 70ºC |
192 | Link codes | 0Bh: CA-L (Cable Assembly FEC) |
196-217 | Serial number | MTYYWWXXSSSSS: Serial number per backshell label (ASCII). Refer to Back-Shell Label Legend table. |
236 | Length 0.1m | Total cable length is the sum of byte 146 for number of meters and byte 236 for 0.1m. Values: Examples: |
237 | AWG | DAC cable AWG information. |
Page 00h/ | Register Name | Description |
0-1 | Identifier | 03: SFP/SFP+/SFP28 |
1 | Extended Identifier | 04h: 2-wire interface |
2 | Connector | 23h: Direct attach assemblies with no separable interfaces |
8 | Cable Technology | 04h: Passive cable |
18 | Length | Length in units of 1 m of direct attach copper cable |
20-35 | Vendor name | NVIDIA: ASCII |
36 | Link codes | 0Bh: CA-L (Cable Assembly FEC) |
37-39 | QSFP vendor IEEE number | 00-02-C9: NVIDIA OUI. |
40-55 | Part number | MCP7F00-A0XXXXXX: Part number per backshell label (ASCII) |
57-59 | Product revision | ZZ: Revision per backshell label (ASCII) |
68-91 | Serial number | MTYYWWXXSSSSS: Serial number per backshell label. Refer to Backshell Label Legend table. |
94 | Compliance | 08h: SFF-8472 Compliance |
108 | Length 0.1m | Total cable length is the sum of byte 18 for number of meters and byte 108 for 0.1m. Values: |
109 | AWG | DAC cable AWG information. |
Please note that the MCP7F00 is a passive cable, and therefore has no Digital Diagnostic Monitoring (DDM) functions implemented. However, the SFP ends are considered compliant with SFF-8472 to enable the host system to read device declarations including interconnect type, link code, and cable length. The compliance and DDM declarations are interpreted as follows:
Read address 94 = 08h. This declares SFF-8472 rev. 12.3 compliance.
Read address 92 bit 6 = 0. This declares that DDM is NOT implemented. This declaration contradicts the wording of SFF-8472 rev. 12.3, but it prevents the host system from hanging if attempting to access the unimplemented upper page A2h.
AWG | Single Cable Diameter | Minimum Bend Radius | Length Tolerance | Cable Color | |
MCP7F00-A02AR30L | 30 | 4.5 +/-0.2 (LSZH) | Single bend: 21mm Repeated bend: 45mm | +/-25mm | Black |
MCP7F00-A003R30L | |||||
MCP7F00-A001R30N | |||||
MCP7F00-A01AR30N | |||||
MCP7F00-A002R30N | |||||
MCP7F00-A03AR26L | 26 | 5.8 +0.3/ | Single bend: 29mm Repeated bend: 58mm | +/-50mm | |
MCP7F00-A005R26L | |||||
MCP7F00-A02AR26N | |||||
MCP7F00-A003R26N |
Pull-tab Colors
Single QSFP28 Side | |
Black | |
SFP28 Side | |
Channel 1: Green | Channel 3: Yellow |
Promo Green | Success Yellow |
Hex = #6faa55 | Hex = #fffbe2 |
RGB = 111, 170, 85 | RGB = 255, 251, 226 |
CMYK = 52, 0, 86, 0 | CMYK = 1, 2, 20, 0 |
Pantone = 368 Coated / 368 Uncoated | Pantone = 7499 Coated / 7499 Uncoated |
Channel 2: Blue | Channel 4:Red |
Nice Blue | Notification Red |
Hex = #3b5998 | Hex = #f03d25 |
RGB = 59, 89, 152 | RGB = 240, 61, 37 |
CMYK = 86, 64, 10, 0 | CMYK = 0, 91, 98, 0 |
Pantone = 660 Coated / 661 Uncoated | Pantone = 7417 Coated / 7417 Uncoated |
Mechanical Dimensions QSFP28 End
Mechanical Dimensions SFP28 End
Mechanical Dimensions, Overall
Connectivity Schematic
100Gb/s Side | 4x25Gb/s Side |
Port 1 Green | |
TX1 | RX1 |
RX1 | TX1 |
Port 2 Blue | |
TX2 | RX1 |
RX2 | TX1 |
Port 3 Yellow | |
TX3 | RX1 |
RX3 | TX1 |
Port 4 Red | |
TX4 | RX1 |
RX4 | TX1 |
Cable Length Definition
The following label is applied on the cable’s backshell:
Backshell Label QSFP28
(sample illustration)
Backshell Label SFP28
(sample illustration)
Backshell Label Legend
Symbol | Meaning | Notes |
PN – Part Number | ||
xx | Length | Meter |
R | Rainbow | Colored pull tabs |
yy | Cable gauge | American wire gauge |
z | Link codes | L: CA-L (Cable Assembly FEC) |
SN – Serial Number | ||
MN | Manufacturer name | 2 characters MT |
YY | Year of manufacturing | 2 digits |
WW | Week of manufacturing | 2 digit |
MS | Manufacturer site | 2 characters |
XXXXX | Serial number | 5 digits for serial number. Reset at start of week to 00001. |
Miscellaneous | ||
ZZ | Revision | 2 alpha-numeric characters |
Xm | Cable length | Meter |
XXAWG | Cable gauge | American wire gauge |
YYYY-MM-DD | Year-month-day | Year 4 digits, month 2 digits, day 2 digits |
COO | Country of origin | E.g. China or Malaysia |
| Quick response code | Serial number |
The cable is marked with a 1-dimensional bar code and the following certification marks:
Cable Jacket Label
(sample illustration)
Note: The serial number and barcode are for NVIDIA internal use only.
The following labels are applied on the cable’s jacket at the tail:
Splitter Copper Cable Labels Identifying the Tails
(sample illustration)
Safety: CB, UL, CE
EMC: CE, FCC, ICES, RCM, VCCI
Ask your FAE for a zip file of the certifications for this product.
This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense.