High quality 100G QSFP28 to 4x25G SFP28 Passive Direct Attach Copper Breakout Cable

QSFP28 passive copper cable assembly feature eight differential copper pairs,providing four data transmission channels at speeds up to 28Gbps per channel,and meets 100G Ethernet,25G Ethernet and InfiniBand Enhanced Data Rate(EDR) requirements.Available in a broad rang of wire gages-from 26AWG through 30AWG-this 100G copper cable assembly features low insertion loss and low cross talk.

Designed for applications in the data center,networking and telecommunications markets that require a high speed,reliable cable assembly,this next generation product shares the same mating interface with QSFP+ form factor ,making it backward compatible with existing QSFP ports.QSFP28 can be used with current 10G and 14G applications with substantial signal integrity margin.

 

Features and Benefits

Compatible with IEEE 802.3bj,IEEE 802.3by and InfiniBand EDR

Supports aggregate data rates of 100Gbps

Optimized construction to minimize insertion loss and cross talk

Backward compatible with existing QSFP+ connectors and cages

Pull-to-release slide latch design

26AWG through 30AWG cable

Straight and break out assembly configurations available

Customized cable braid termination limits EMI radiation

Customizable EEPROM mapping for cable signature

RoHS compliant

Industry  Standards

100G Ethernet(IEEE 802.3bj)

25G  Ethernet(IEEE 802.3by)

InfiniBand EDR

SFF-8665   QSFP+  28G  4X Pluggable  Transceiver  Solution(QSFP28)

SFF-8402 SFP+ 1X 28Gb/s Pluggable Transceiver  Solution(SFP28)

 

Technical  Documents

108-32081 QSFP28  Copper  Module  Direct  Attach  Cable  Assembly

108-2364  Single  Port and Ganged  SFP+ Cages,Zsfp+  Single  Port and Ganged Cages,and SFP+  Copper Direct Attach Cable Assemblies.

 

High Speed Characteristics

Parameter Symbol Min. Typical. Max. Unit Note

Differential Impedance

RIN,P-P

90

100

110

Ώ

Insertion loss

SDD21

8

22.48

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 SCC11 -

dB

common-mode 2

At 0.2 to 19 GHz

SCC22
output return loss
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

10

At 0.01 to 12.89 GHz
Differential to common Mode

SCD21-IL

Conversion Loss

See 5

dB

At 12.89 to 15.7 GHz

6.3

At 15.7 to 19 GHz
Channel Operating Margin

COM

3

dB

 

Notes:

  1. Reflection Coefficient given by equation SDD11(dB) < 16.5 – 2 × SQRT(f ), with f in GHz
  2. Reflection Coefficient given by equation SDD11(dB) < 10.66 – 14 × log10(f/5.5), with f in GHz
  3. Reflection Coefficient given by equation SCD11(dB) < 22 – (20/25.78)*f, with f in GHz
  4. Reflection Coefficient given by equation SCD11(dB) < 15 – (6/25.78)*f, with f in GHz
  5. Reflection Coefficient given by equation SCD21(dB) < 27 – (29/22)*f, with f in GHz

 

Applications

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