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Report intermateability COM Express ept Test Report –intermateability COM Express Test No.:...

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  • ept GmbH elektronische Präzisionstechnik . Bergwerkstr. 50 . 86971 Peiting, Germany . Tel +49 (0) 88 61/25 01 0 . Fax +49 (0) 88 61/55 07 . sales@ept.de ept . Rechtsform / Legal Form: GmbH . Sitz der Gesellschaft / Registered Office: Peiting, Germany . Registergericht / Register Court: AG München (Munich), HRB 151797 . Geschäftsführer /

    Managing Director: Bernhard Guglhör, Thomas Guglhör

    ept Test Report – intermateability COM Express Test No.: 138 10 April 2013 samples under test: COM Express “Colibri” plug and receptacle connectors

    Task: test and evidence of intermateability of ept “Colibri” connectors with the Tyco and Foxconn products Tests performed: mechanical:

    mating and withdrawal forces, mating cycles, cross sections of contact area electrical: contact resistance, high frequency (HF) properties

    Result: The intermateability of the ept COM Express “Colibri” connectors is very good in combination with all tested other manufacturers.

    approved by: Date: Signature: Michael Spranger 10 Apr 2013 Director R&D

  • www.ept.de . 10 Apr 2013 . page 2 of 20

    CONTENTS: 1. Summary ........................................................................................................................... 3

    2. General information .............................................................................................................. 4

    2.1. Test samples .............................................................................................................. 4

    2.2. Test facility ................................................................................................................. 5

    2.3. Time schedule ............................................................................................................ 5

    2.4. Participants ................................................................................................................ 5

    2.5. Measuring equipment................................................................................................. 6

    3. Test description and results .............................................................................................. 7

    3.1. mechanical intermateability ........................................................................................ 7

    3.1.1. mating and withdrawal forces ............................................................................... 7

    3.1.2. mating cycles ........................................................................................................ 9

    3.1.3. cross sections of contact area ............................................................................ 10

    3.2. electrical intermateability .......................................................................................... 13

    3.2.1. contact resistance ............................................................................................... 13

    3.2.2. high frequency (HF) properties ........................................................................... 15

  • www.ept.de . 10 Apr 2013 . page 3 of 20

    1. Summary COM Express Plug and Receptacle connectors of ept, Tyco and Foxconn were tested for this report. Mechanical intermateability: All combinations of connectors showed similar mating and withdrawal forces. The combinations with ept Receptacle connectors showed the lowest mating force in combination with equal withdrawal forces compared with the other pairs of connectors. 30 mating cycles were performed without damage with all combinations of connectors. Sections of the mating area showed a good mating/fitting of the signal and ground pins between Plug and Receptacle connectors in all combinations. Electrical intermateability: The contact resistance of all combinations was within the same range of values. The high frequency (HF) tests showed a significant better performance of combinations with ept receptacle connector at high data rate than for the other combinations.

  • www.ept.de . 10 Apr 2013 . page 4 of 20

    2. General information

    2.1. Test samples

    3 pairs of COM Express connectors were tested regarding intermateability. The following connectors were tested: a) ept COM Express “Colibri”

    ept Plug

    ept Receptacle b) TYCO COM Express “0.5 Free Height”

    Tyco Plug

    Tyco Receptacle

  • www.ept.de . 10 Apr 2013 . page 5 of 20

    c) FOXCONN “QT00” and “QT01” Series

    Foxconn Plug

    Foxconn Receptacle

    2.2. Test facility

    The measurements were carried out in the Quality Management Department (QM) at ept GmbH Bergwerkstrasse 50 86971 Peiting, Germany The high frequency (HF) tests were carried out at the Fraunhofer IZM institute in Berlin.

    2.3. Time schedule

    Start of test: Jan 2013 End of test: Apr 2013

    2.4. Participants

    name function phone e-mail

    Dipl.-Ing. Matthias Wildschütte

    testing and editor +498861-2501-170 matthias.wildschuette@ept.de

    Ann-Kathrin Essich testing +498861-2501-169 ann-kathrin.essich@ept.de

  • www.ept.de . 10 Apr 2013 . page 6 of 20

    2.5. Measuring equipment

    ID No. equipment type manufacturer status 2

    last cal.

    next cal.

    P 20005 universal testing machine

    Test Control Zwick cal 07/12 07/13

    P 40009 digital multimeter Model 2750 Keithley cal 09/11 05/15

    stereo microscope DMLB Leica cnn - -

    status

    2

    cal: calibration car: calibration restricted use chk: check chr: check restricted use cpu: check prior to use cnn: calibration not necessary ind: for indication only

  • www.ept.de . 10 Apr 2013 . page 7 of 20

    3. Test description and results

    3.1. mechanical intermateability

    All connectors were assembled to the same type of PCB using reflow technology prior to the tests.

    3.1.1. mating and withdrawal forces

    All pairs of connectors could be mated without any collision or damage. The following mating and withdrawal forces were measured with a “Zwick” testing machine: initial forces Plug ept ept Tyco Tyco ept Foxconn Foxconn

    Receptacle ept Tyco ept Tyco Foxconn ept Foxconn

    mating force [N] 78 144 66 109 118 98 90

    withdrawal force [N] 53 46 43 37 48 52 32

    0

    20

    40

    60

    80

    100

    120

    140

    160

    ept ept Tyco Tyco ept Foxconn Foxconn

    ept Tyco ept Tyco Foxconn ept Foxconn

    fo rc

    e [

    N ]

    initial mating and withdrawal forces

    mating force [N]

    withdrawal force [N]

    Receptacle

    Plug

  • www.ept.de . 10 Apr 2013 . page 8 of 20

    Plug ept vs. Receptacle ept Plug Tyco vs. Receptacle ept

    Plug ept vs. Receptacle Tyco Plug Tyco vs. Receptacle Tyco

    Plug Foxconn vs. Receptacle ept Plug ept vs. Receptacle Foxconn

  • www.ept.de . 10 Apr 2013 . page 9 of 20

    Plug Foxconn vs. Receptacle Foxconn

    3.1.2. mating cycles

    The two parts of each specimen pair, the receptacle and the plug, were mated and withdrawn 30 times. These mating cycles were performed with a force displacement testing machine. The first 5 cycles were performed with 25 mm/min for the initial force-displacement charts. For the other 25 cycles the mating and withdrawing speed was set to 600 mm/min. To ensure a proper measuring a fixed/floating bearing was used to position both parts of the connector specimen.

    30 mating cycles were performed with each pair. The following table shows the initial and maximum mating and withdrawal forces of the 30 mating cycles: initial and maximum forces during 30 mating cycles Plug ept ept Tyco Tyco ept Foxconn Foxconn

    Receptacle ept Tyco ept Tyco Foxconn ept Foxconn

    mating force initial [N]

    78 144 66 109 118 98 90

    withdrawal force initial [N]

    53 46 43 37 48 52 32

    mating force maximum [N]

    83 158 76 121 126 101 98

    withdrawal force maximum [N]

    68 69 68 48 64 63 44

  • www.ept.de . 10 Apr 2013 . page 10 of 20

    3.1.3. cross sections of contact area

    Cross sections of all pairs were done to show how mating looks like inside the mated connectors. The cross sections show the area where Plug and Receptacle are in electrical contact.

    0

    20

    40

    60

    80

    100

    120

    140

    160

    ept ept Tyco Tyco ept Foxconn Foxconn

    ept Tyco ept Tyco Foxconn ept Foxconn

    fo rc

    e [

    N ]

    mating and withdrawal forces: initial and maximum over 30 mating cycles

    mating force initial [N]

    withdrawal force initial [N]

    mating force maximum [N]

    withdrawal force maximum [N]

    Plug

    Receptacle

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