25GBase SFP28 To SFP28 DAC Direct Attach Cable 3m SFP-H25G-CU3M Compatible

Basic Information
Place of Origin: China
Brand Name: OLKOPTO
Certification: CE, RoHS, FCC, FDA, UL, EMC, ISO9001
Model Number: OLSP02XC-CDM5
Minimum Order Quantity: 1 pc
Price: negotiable
Packaging Details: 1pc/foil bag
Delivery Time: 3-6 working days
Payment Terms: T/T
Supply Ability: 80-120k per month
Compatible: Cisco Form Type: SFP28 To SFP28
Datarate: 25GBase Type: Direct Attach Cable
Media: Copper Active/Passive: Passive
Product Name: 25G SFP28 DAC Temperature Range: 0~ 70 °C
Distance: 3m Wire AWG: 30/28 AWG
High Light:

SFP28 Direct Attach Cable


25G Direct Attach Cable


SFP28 direct attach copper

25GBase SFP28 To SFP28 DAC Direct Attach Cable 3m SFP-H25G-CU3M Compatible


Cisco SFP-H25G-CU3M Compatible 25GBase SFP28 to SFP28 Direct Attach Cable 3m


This is a Cisco SFP-H25G-CU3M compatible 25GBase-CU SFP28 to SFP28 direct attach cable that operates over passive copper with a maximum reach of 3.0m (9.8ft). Our SFP28 DAC cables offer precision external cable assembly solutions. They meet the ever increasing demand for higher channel density with high-level signal integrity in high performance computing, top-of-rack switching, and network storage deployments.



1. Data rate from 1 Gbps to 28 Gbps
2. 360° shielding for superior EMI/EMC performance
3. Proprietary high-speed PCB termination technology to minimize impedance discontinuity and cross talk
4. Patented back shell and positive latching mechanism for easy engagement and disengagement
5. Overmolded cable termination for increased mechanical robustness
6. Dust covers included for all plugs

High Speed Characteristics

Parameter Symbol Min Typ Max Units Notes  
Differential Impedance RIN,P-P 90 100 110 Ω    
Insertion loss SDD21 8   22.48 dB At 12.8906 GHz  


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


output return loss










At 0.2 to 19 GHz


Differential to common-mode

return loss

SCD11 12   See 3





At 0.01 to 12.89 GHz  
SCD22 10.58   See 4 At 12.89 to 19 GHz  


Differential to common Mode

Conversion Loss




10       At 0.01 to 12.89 GHz  
    See 5 dB At 12.89 to 15.7 GHz  
6.3       At 15.7 to 19 GHz  
Channel Operating Margin COM 3     dB    




Regulatory Compliance


Feature Test Method Performance
Electrostatic Discharge (ESD) to the Electrical Pins


MIL-STD-883C Method 3015.7


Class 1(>2000 Volts)

Electromagnetic Interference(EMI) FCC Class B Compliant with Standards
CENELEC EN55022 Class B


RF Immunity(RFI)



Typically Show no Measurable Effect from a 10V/m Field Swept from 80 to 1000MHz
RoHS Compliance RoHS Directive 2011/65/EU and it's Amendment Directives 6/6 RoHS 6/6 compliant




25G Ethernet
Data center cabling infrastructure



Our DAC cables extremely low-insertion loss due to the unique foam skin, gas-injected dielectric technology as well as extreme control of balanced/unbalanced (Mode conversion). The technology offers ease of cable management and smaller packaging densities. The cable assemblies employ new, innovative PCB technology designed specifically to deliver signal integrity performance. The cables regulate cross talk and launch conditions between wire and PCB termination to optimize return loss and prevent or minimize “ringing” effects. Please contact us for more details.


• Compliant with SFF-8402 and SFF-8432
• Compatible to SFP+ MSA SFF-8431
• Lowest total system EMI solution
• Single 3.3V power supply
• RoHS Compliant and Lead-Free

Contact Details

WhatsApp : +8618695187695