PRODDUCTS

Shenzhen JHA Technology Co., Ltd is one of the leading manufacturers of hardened Ethernet, PoE, and fiber connectivity products specifically designed for harsh and demanding environments.

PRODUCTS

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100G QSFP28/4SFP28 Direct Attach Cable JHA-QSFP28-4SFP28-100G-PCU


    • 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
  •  

    ◊ 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

Classification

Network Cabling

DAC(Direct Attach Cable)


  • DESCRIPTION
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  • General Description

    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.

     

    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.

    Specification

    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  

    34 (1)
    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

     34 (2) 

    Mechanical Specifications

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

    34 (3)

    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

     

  •  

    ◊ 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

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