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JHA-QSFP28-4SFP28-100G-PCU Spec
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JHA-QSFP28-4SFP28-100G-PCU Spec

QSFP28passivecoppercableassemblyfeatureeightdifferentialcopperpairs,providingfourdatatransmissionchannelsatspeedsupto28Gbpsperchannel,andmeets100GEthernet,25GEthernetandInfiniBandEnhancedDataRate(EDR)requirements.Availableinabroadrangofwiregages-from26AWGthrough30AWG-this100Gcoppercableassemblyfeatureslowinsertionlossandlowcrosstalk.Designedforapplicationsinthedatacenter,networkingandtelecommunicationsmarketsthatrequireahighspeed,reliablecableassembly,thisnextgenerationproductsharesthesamematinginterfacewithQSFP+formfactor,makingitbackwardcompatiblewithexistingQSFPports.QSFP28canbeusedwithcurrent10Gand14Gapplicationswithsubstantialsignalintegritymargin.
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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.

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

l w Supports aggregate data rates of 100Gbps

l w Optimized construction to minimize insertion loss and cross talk

l w Backward compatible with existing QSFP+ connectors and cages

l w Pull-to-release slide latch design

l  26AWG through 30AWG cable

l w Straight and break out assembly configurations available

l    Customized cable braid termination limits EMI radiation   

l    Customizable EEPROM mapping for cable signature

   RoHS compliant

Product   Applications

l Switches,servers and routers

l Data Center networks

l Storage area networks

l High performance computing

l Telecommunication and wireless infrastructure

l Medical diagnostics and networking

l Test and measurement equipment

Industry  Standards

l 100G Ethernet(IEEE 802.3bj)

l 25G  Ethernet(IEEE 802.3by)

l InfiniBand EDR

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

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

Technical  Documents

l 108-32081 QSFP28  Copper  Module  Direct  Attach  Cable  Assembly

l 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

 

 

 

See 5

dB

 

At 12.89 to 15.7 GHz

 

Conversion Loss

 

 

 

 

 

 

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

 

Pin Descriptions

 

SFP28 Pin Function Definition

 

Pin

Logic

Symbol

Name/Description

Notes

1

 

VeeT

Transmitter Ground

 

2

LV-TTL-O

TX_Fault

N/A

1

3

LV-TTL-I

TX_DIS

Transmitter Disable

2

4

LV-TTL-I/O

SDA

Tow Wire Serial Data

 

5

LV-TTL-I

SCL

Tow Wire Serial Clock

 

6

 

MOD_DEF0

Module present, connect to VeeT

 

7

LV-TTL-I

RS0

N/A

1

8

LV-TTL-O

LOS

LOS of Signal

2

9

LV-TTL-I

RS1

N/A

1

10

 

VeeR

Reciever Ground

 

11

 

VeeR

Reciever Ground

 

12

CML-O

RD-

Reciever Data Inverted

 

13

CML-O

RD+

Reciever Data Non-Inverted

 

14

 

VeeR

Reciever Ground

 

15

 

VccR

Reciever Supply 3.3V

 

16

 

VccT

Transmitter Supply 3.3V

 

17

 

VeeT

Transmitter Ground

 

 

18

CML-I

TD+

 

Transmitter Data Non-Inverted

 

 

19

CML_I

TD-

 

Transmitter Data Inverted

 

 

20

 

VeeT

 

Transmitter Ground

 

1.

Signals not supported in SFP+ Copper pulled-downto VeeT with 30K ohms resistor

 

2.

Passive cable assemblies do not support

LOS and TX_DIS

 

QSFP28 Pin Function Definition

 

Pin

Logic

Symbol

Description

1

 

GND

Ground

 

 

 

 

2

CML-I

Tx2n

Transmitter Inverted Data Input

 

 

 

 

3

CML-I

Tx2p

Transmitter Non-Inverted Data Input

4

 

GND

Ground

 

 

 

 

5

CML-I

Tx4n

Transmitter Inverted Data Input

 

 

 

 

6

CML-I

Tx4p

Transmitter Non-Inverted Data Input

 

 

 

 

7

 

GND

Ground

 

 

 

 

8

LVTTL-I

ModSelL

Module Select

 

 

 

 

9

LVTTL-I

ResetL

Module Reset

 

 

 

 

10

 

Vcc Rx

+3.3V Power Supply Receiver

 

 

 

 

11

LVCMOS-

SCL

2-wire serial interface clock

I/O

 

 

 

 

 

 

 

12

LVCMOS-

SDA

2-wire serial interface data

I/O

 

 

 

 

 

 

 

13

 

GND

Ground

 

 

 

 

14

CML-O

Rx3p

Receiver Non-Inverted Data Output

 

 

 

 

15

CML-O

Rx3n

Receiver Inverted Data Output

16

 

GND

Ground

 

 

 

 

17

CML-O

Rx1p

Receiver Non-Inverted Data Output

 

 

 

 

18

CML-O

Rx1n

Receiver Inverted Data Output

 

 

 

 

 

 

 

19

 

GND

Ground

 

 

 

 

 

 

 

 

20

 

GND

Ground

 

 

 

 

 

 

 

 

21

CML-O

Rx2n

Receiver Inverted Data Output

 

 

 

 

 

 

 

 

22

CML-O

Rx2p

Receiver Non-Inverted Data Output

 

 

23

 

GND

Ground

 

 

 

 

 

 

 

 

24

CML-O

Rx4n

Receiver Inverted Data Output

 

 

 

 

 

 

 

 

25

CML-O

Rx4p

Receiver Non-Inverted Data Output

 

 

 

 

 

 

 

 

26

 

GND

Ground

 

 

27

LVTTL-O

ModPrsL

Module Present

 

 

 

 

 

 

 

 

28

LVTTL-O

IntL

Interrupt

 

 

 

 

 

 

 

 

29

 

Vcc Tx

+3.3V Power supply transmitter

 

 

 

 

 

 

 

 

30

 

Vcc1

+3.3V Power supply

 

 

 

 

 

 

 

 

31

LVTTL-I

LPMode

Low Power Mode

 

 

 

 

 

 

 

 

32

 

GND

Ground

 

 

 

 

 

 

 

 

33

CML-I

Tx3p

Transmitter Non-Inverted Data Input

 

 

 

 

 

 

 

 

34

CML-I

Tx3n

Transmitter Inverted Data Input

 

 

 

 

 

 

 

 

35

 

GND

Ground

 

 

 

 

 

 

 

 

36

CML-I

Tx1p

Transmitter Non-Inverted Data Input

 

 

37

CML-I

Tx1n

Transmitter Inverted Data Input

 

 

 

 

 

 

 

 

38

 

GND

Ground

 

 

 

 

 

 

 

Mechanical Specifications

 

The connector is compatible with the SFF-8432 and SFF-8665 specification.

 

Length (m)

Cable AWG

1

30

2

30

3

26

4

26

5

26

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

CISPR22 ITE Class B

 

RF Immunity(RFI)

 

IEC61000-4-3

Typically Show no Measurable Effect from a 10V/m Field Swept from 80 to 1000MHz

RoHS Compliance

RoHS Directive 2011/6/5/EU and it's Amendment Directives 6/6

RoHS 6/6 compliant

 

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