Absolute maximum ratings are those beyond which damage to the device may occur.
Between the operational specifications and absolute maximum ratings, prolonged operation is not intended and permanent device degradation may occur.
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 | Notes |
Characteristic impedance | 90 | 100 | 110 | Ω | |
Time propagation delay | --- | --- | 4.5 | ns/m | Informative |
QSFP28 Memory Map I2C Address A0h
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 | MCP7H00-G0XXXXXXX: Part number per backshell label (ASCII) |
184-185 | Product revision | ZZ: Revision per backshell label (ASCII) |
186 | Attenuation 2.5GHz | Typical attenuation in 1dB. |
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) |
196-211 | Serial number | MTYYWWXXSSSSS: Serial number per backshell label (ASCII). Refer to Backshell Label SN (Serial Number) Legend. |
212-217 | Date code | YYMMDD: Year YY, month MM, day DD. |
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. |
Cable Mechanical Specifications 100/50GbE Sides
Length (m) | AWG | Single Cable Diameter | Minimum Bend Radius | Cable Color | |
MCP7H00-G02AR30L | 2.5 ± 0.050 | 30 | 5.6 ±0.35 | Single bend: 28mm Assembly/repeated bend: 56mm | Black |
MCP7H00-G003R30L | 3 ± 0.050 | ||||
MCP7H00-G001R30N | 1 ± 0.025 | ||||
MCP7H00-G01AR30N | 1.5 ± 0.025 | ||||
MCP7H00-G002R30N | 2 ± 0.050 | ||||
MCP7H00-G005R26L | 5 ± 0.050 | 26 | 7.4 ±0.3mm | Single bend: 37mm Assembly/repeated bend: 74mm | |
MCP7H00-G02AR26N | 2.5 ± 0.050 | ||||
MCP7H00-G003R26N | 3 ± 0.050 |
The minimum assembly bending radius (close to the connector) is 10x the cable’s outer diameter. The repeated bend (far from the connector) is also 10x the cable’s outer diameter. The single bend (far from the connector) is 5x the cable’s outer diameter.
Assembly Bending Radius
Pull-tab Color Specifications
Single 100GbE QSFP28 Side |
Black |
Double 50GbE QSFP28 Side |
Port 1: Green |
Promo Green |
Hex = #6faa55 |
RGB = 111, 170, 85 |
CMYK = 52, 0, 86, 0 |
Pantone = 368 Coated / 368 Uncoated |
Port 2: Blue |
FB Blue |
Hex = #3b5998 |
RGB = 59, 89, 152 |
CMYK = 86, 64, 10, 0 |
Pantone = 660 Coated / 661 Uncoated |
Mechanical Dimensions
Connectivity Schematic
100Gb/s Side | 2x50Gb/s Side |
Port 1 Green | |
TX1 | RX1 |
RX1 | TX1 |
TX2 | RX2 |
RX2 | TX2 |
Port 2 Blue | |
TX3 | RX1 |
RX3 | TX1 |
TX4 | RX2 |
RX4 | TX2 |
Cable Length Definition
The following labels is applied on the cable’s backshell:
Backshell Label QSFP28 100GbE Side
(sample illustration)
Backshell Label QSFP28 50GbE
(sample illustration)
Legend: COO – Country of Origin
Images are for illustration purposes only. Product labels, colors, and lengths may vary.
Backshell Label SN (Serial Number) Legend
Symbol | Meaning | Notes |
MT | Customer name | 2 digits (alphanumeric) |
YY | Year of manufacturing | 2 digits (numeric) |
WW | Week of manufacturing | 2 digit (numeric) |
XX | Manufacturer Site | Two characters |
SSSSS | Serial Number | 5 digits (decimal numeric) for serial number, starting from 00001 |
The following label is applied on the cable’s jacket:
Copper Cable Jacket Label
(sample illustration)
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 NVIDIA 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.
