SFP28 Direct Attach Cables are compliant with SFF-8432 and SFF-8402 specifications. Various choices of wire gauge are available from 30 to 26 AWG with various choices of cable length (up to 5m).
Up to 25.78125Gbps data rate
Up to 5m transmission
Hot-pluggable SFP 20PIN footprint
Compatible to SFP28 MSA
Compatible to SFF-8402 and SFF-8432
Single 3.3V power supply
Temperature Range: 0~ 70 °C
RoHS Compliant
Low EMI radiation Switches, servers and routers
Data Center networks
Storage area networks
High performance computing
Telecommunication and wireless infrastructure
Medical diagnostics and networking
Test and measurement equipment
Parameter | Minimum | Typical | Maximum | Unit |
Cable Diameter (26AWG) | - | 0.220 | - | Inches |
Bend Radius (26AWG) | 1.102 | - | - | Inches |
Cable Diameter (28AWG) | - | 0.185 | - | Inches |
Bend Radius (28AWG) | 0.925 | - | - | Inches |
Cable Diameter (30 AWG) | - | 0.181 | - | Inches |
Bend Radius (30 AWG) | 0.906 | - | - | Inches |
Within Pair Skew | - | - | 100 | ps/10m |
Cable Insertion Loss | - | 15.43 | - | dB/5m |
Bulk Cable Time Delay | - | 5.2 | ns/m | |
Bulk Cable Impedance | 95 | 100 | 105 | Ohms |
Insertion Force | - | - | 40 | N |
Withdrawal Force | - | - | 30 | N |
Retention Force | 90 | - | - | N |
Durability | 50 Cycles | - | - | - |
25G SFP28 Copper Cable Assemblies, Passive
P/N | Length | Data Rate | AWG | Length Tolerance |
TSSP-PC25G-01M | 1M | 25G | 28 / 30 | +3.5/-3.5cm |
TSSP-PC25G-02M | 2M | 25G | 28 / 30 | +3.5/-3.5cm |
TSSP-PC25G-03M | 3M | 25G | 28 / 30 | +4/-4cm |
TSSP-PC25G-05M | 5M | 25G | 26 | +6/-6cm |
Parameter | Symbol | Min | Max | Unit |
Operating Case Temperature | Topc | 0 | 70 | degC |
Storage Temperature | Tst | -40 | 85 | degC |
Relative Humidity (non-condensation) | RS | 35 | 60 | % |
Supply Voltage | VCC3 | 3.135 | 3.465 | V |
Voltage on LVTTL Input | Vilvttl | -0.3 | VCC3 +0.2 | V |
Power Supply Current | ICC3 | - | 15 | mA |
Total Power Consumption | Pd | - | 0.05 | W |
Notes:
Stress or conditions exceed the above range may cause permanent damage to the device.
This is a stress rating only and functional operation of the device at these or any other conditions above those listed in the operational sections of this specification is not applied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
Item | Test Parameter | IEEE802.3bj Specification |
1 | Differential Insertion Loss (SDD12) | Maximum insertion loss at 12.8906Ghz @22.48dB Minimum insertion loss at 12.8906Ghz@8dB |
2 | Differential Insertion Loss (SDD21) | Maximum insertion loss at 12.8906Ghz@22.48dB Minimum insertion loss at 12.8906Ghz@8dB |
3 | Differential Return Loss (SDD22) | -16.5+2xSQRT(f) @ 0.01 to 4.1GHz -10.66+14xLog10(f/5.5) @4.1 to 19GHz |
4 | Differential Return Loss (SDD11) | -16.5+2xSQRT(f) @ 0.01 to 4.1GHz -10.66+14xLog10(f/5.5) @4.1 to 19GHz |
5 | Common Mode Reflection (SCC22) | -2dB @ 0.01 to 19GHz |
6 | Common Mode Reflection (SCC11) | -2dB @ 0.01 to 19GHz |
7 | Common Mode Conversion (SCD22) | -22+(20/25.78)*(f) @ 0.01 to 12.89GHz -15+(6/25.78)*(f) @ 12.9 to 19GHz |
8 | Common Mode Conversion (SCD11) | -22+(20/25.78)*(f) @ 0.01 to 12.89GHz -15+(6/25.78)*(f) @ 12.9 to 19GHz |
9 | Differential to Common Mode Conversion Loss (SCD12) | -10dB @ 0.01 to 12.89GHz -27+(29/22)*(f) @ 12.9 to 15.7GHz -6.3dB @ 15.71 to 19GHz |
10 | Differential to Common Mode Conversion Loss (SCD21) | -10dB @ 0.01 to 12.89GHz -27+(29/22)*(f) @ 12.9 to 15.7GHz -6.3dB @ 15.71 to 19GHz |
Pin | Symbol | Name/Description |
1 | VEET [1] | Transmitter Ground |
2 | Tx_FAULT [2] | Not used |
3 | Tx_DIS [3] | Not used |
4 | SDA [2] | 2-wire Serial Interface Data Line |
5 | SCL [2] | 2-wire Serial Interface Clock Line |
6 | MOD_ABS [4] | Module Absent. Grounded within the module |
7 | RS0 [5] | Not used |
8 | RX_LOS [2] | Loss of Signal indication. Logic 0 indicates normal operation |
9 | RS1 [5] | Not used |
10 | VEER [1] | Receiver Ground |
11 | VEER [1] | Receiver Ground |
12 | RD- | Receiver Inverted DATA out. AC Coupled |
13 | RD+ | Receiver DATA out. AC Coupled |
14 | VEER [1] | Receiver Ground |
15 | VCCR | Receiver Power Supply |
16 | VCCT | Transmitter Power Supply |
17 | VEET [1] | Transmitter Ground |
18 | TD+ | Transmitter DATA in. AC Coupled |
19 | TD- | Transmitter Inverted DATA in. AC Coupled |
20 | VEET [1] | Transmitter Ground |
Notes:
1.Module circuit ground is isolated from module chassis ground within the module.
2..should be pulled up with 4.7k – 10k ohms on host board to a voltage between 3.15Vand 3.6V.
3.Tx_Disable is an input contact with a 4.7 kΩ to 10 kΩ pullup to VccT inside the module.
4.Mod_ABS is connected to VeeT or VeeR in the SFP+ module. The host may pull this contact up to Vcc_Host with a resistor in the range 4.7 kΩ to10 kΩ.Mod_ABS is asserted “High” when the SFP+ module is physically absent from a host slot.
5. RS0 and RS1 are module inputs and are pulled low to VeeT with > 30 kΩ resistors in the module.
The connector is compatible with the SFF-8432 specification.
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