SFP28 Direct Attach Cables (25g sfp28 dac) 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). The SFP28 passive direct attach copper cable assemblies are high-performance, cost-effective I/O solutions for 25G Ethernet. SFP28 DAC copper cables allow hardware manufacturers to achieve high port density, configurability, and utilization at a very low direct attach copper cable sfp+ cost and reduced power budget of passive copper cable.
As one of professional optical transceiver suppliers, we also provide a range of optical transceivers, such as 400g optical transceiver, 100g optical transceivers, 40g qsfp+aatransceiver, 25g sfp28 twinax transceiver, 10g sfp+ transceiver, sfp device, etc.
Compatibility of SFP28 25G Copper Twinax Cable XM DAC
SFP-H25G-CU5M 5M 25G SFP28 DAC
SFP-H25G-CU3M 3M 25G SFP28 DAC
SFP-H25G-CU2M 2M 25G SFP28 DAC
SFP-H25G-CU1M 1M 25G SFP28 DAC
Technical Specification Of SFP28 25G Cable xM
Parameter | Symbol | Min | Typical | Max | Unit | Note |
Differential Impedance | TDR | 90 | 100 | 110 | Ώ | |
Insertion loss | SDD21 | -22.48 | -8 | dB | At 12.8906 GHz | |
Differential Return Loss | SDD11 | -12.45 | See 1 | dB | At 0.05 to 4.1 GHz | |
SDD22 | -3.12 | See 2 | dB | At 4.1 to 19 GHz | ||
Common-mode to common-mode output return loss | SCC11 | -2 | dB | At 0.2 to 19 GHz | ||
SCC22 | ||||||
Differential to common-mode | SCD11 | -12 | See 3 | dB | At 0.01 to 12.89 GHz | |
return loss | SCD22 | -10.58 | See 4 | At 12.89 to 19 GHz | ||
Differential to Common Mode | SCD21-IL | -10 | dB | At 0.01 to 12.89 GHz | ||
Conversion Loss | See 5 | At 12.89 to 15.7 GHz | ||||
-6.3 | At 15.7 to 19 GHz | |||||
Channel Operating Margin | COM | -3 | dB |
What is a 25G DAC?
25G DAC is a DAC whose actual transmission rate can reach 25G, and 25G DAC can transmit at a distance of less than 7 meters. 25G DACs are generally used in 25G short-distance transmission networks, plugged into 25G optical ports, and connected to another 25G optical port in the same rack or adjacent racks.
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