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JHA-SFP28-25G-PCU Spec
JHA-SFP28-25G-PCU Spec
JHA-SFP28-25G-PCU Spec
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  • JHA-SFP28-25G-PCU Spec
  • JHA-SFP28-25G-PCU Spec
  • JHA-SFP28-25G-PCU Spec

JHA-SFP28-25G-PCU Spec

SFP28DirectAttachCables arecompliantwithSFF-8432andSFF-8402specifications.Variouschoicesofwiregauge areavailable from30to26AWGwithvarious choicesofcablelength(upto 5m).
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  • SFP28 Direct Attach Cables are compliant with SFF-8432 and SFF-8402 specifications. Various choices of wire gauge are available from 30 to 26 AWG with various choices of cable length (up to 5m).

  • • w Up to 25.78125 Gbps data rate

    • w Up to 5 meter transmission

    • w Hot-pluggable SFP 20PIN footprint

    • w Improved Pluggable Form Factor(IPF)

    compliant for enhanced EMI/EMC

    performance

    • w Compatible to SFP28 MSA

    • w Compatible to SFF-8402 and SFF-8432

    • w Temperature Range: 0~ 70 °C

    w RoHS Compatible

    Benefits

    • Cost-effective copper solution

    • Lowest total system power solution

    • Lowest total system EMI solution

    • Optimized design for Signal Integrity

    Applications

    • 25G Ethernet

    Product Description

    • The SFP28 passive cable assemblies are high performance, cost effective I/O solutions for 25G Ethernet. SFP28 copper cables allow hardware manufactures to achieve high port density, configurability and utilization at a very low cost and reduced power budget

  • 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

     

    Mechanical Specifications

     

    The connector is compatible with the SFF-8432 specification.

     

    Length (m)

    Cable AWG

    1

    30

    2

    30

    3

    30/26

    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 2011/65/EU and it's Amendment Directives 6/6

    RoHS 6/6 compliant

     

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