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.

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Description Features parameters Application Download

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
	SDD22	3.12		See 2	dB	At 4.1 to 19 GHz
Common-mode to	SCC11		-		dB
common-mode	SCC11	2				At 0.2 to 19 GHz
common-mode	SCC22	2				At 0.2 to 19 GHz
output return loss	SCC22
output return loss
Differential to common-mode	SCD11	12	-	See 3	dB	At 0.01 to 12.89 GHz
Differential to common-mode	SCD11
return loss	SCD22	10.58		See 4		At 12.89 to 19 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	SCD21-IL			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:

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