• VT-42 Laminate/Prepreg

    UL Approval: E214381 Version: B4 19/03/2020 /21

    General Information

    • Dicy Cured System
    • Standard FR4.0 (Tg140℃)
    • UV Blocking

    Application

    Computer, Communication Equipment, Instrumentation, TV, VCR, Electronic Game Machine, LCD, Automotive, etc.

    Availability

    • Core Thickness: 0.002” (0.05mm) to 0.200” (5mm), available in sheet or panel form
    • Copper Foil: 1/4oz to 12oz
    • Prepregs are available in roll or panel form
    • E-Glass styles: 7628, 1506, 1500, 2113, 2313, 3313, 2116, 1080, 1086, 1078, 106 &1067, etc.

    Note: For cores 0.005”, it is recommended to use the reverse treated copper due to the low profile. The peel strength for RT foil is ≈1-2lbs/in (0.35Kg/m) less than standard foil.

    Properties Prepreg Laminate
    Storage Condition Temperature Below 23°C (73°F) Below 5°C (41°F) Room
    Relative humidity Below 55% RH / /
    Shelf Life 3 months 6 months 24 months (airproof)

    The prepreg exceeding shelf life should be retested.

    Properties Sheet IPC-4101E /21

    Properties Test Method Units Specification Typical Value
    Thermal Properties
    Tg DSC IPC-TM-650 2.4.25 °C 110 minimum 140
    TMA IPC-TM-650 2.4.24 °C - -
    Td ASTM D3850 °C - 310
    T260 IPC-TM-650 2.4.24.1 Minute - 20
    T288 IPC-TM-650 2.4.24.1 Minute - 2
    Thermal Stress @ 288°C IPC-TM-650 2.4.13.1 Second Pass 10s 300
    Z-axis CTE Before Tg IPC-TM-650 2.4.24 ppm/°C - 50
    After Tg IPC-TM-650 2.4.24 ppm/°C - 250
    Total Expansion (50~260°C) IPC-TM-650 2.4.24 % - 3.75
    X-Y CTE IPC-TM-650 2.4.24 ppm/°C - 12~14
    MOT UL 94 °C - 130
    Electrical Properties
    DK @ 1GHz IPC-TM-650 2.5.5.9 - 5.4 maximum 4.2
    DF @ 1GHz IPC-TM-650 2.5.5.9 - 0.035 maximum 0.015
    Volume Resistivity After Moisture Resistance IPC-TM-650 2.5.17.1 MΩ-cm 1.0E+6 minimum 5.0E+8
    E-24/125 IPC-TM-650 2.5.17.1 MΩ-cm 1.0E+3 minimum 5.0E+6
    Surface Resistivity After Moisture Resistance IPC-TM-650 2.5.17.1 1.0E+4 minimum 5.0E+7
    E-24/125 IPC-TM-650 2.5.17.1 1.0E+3 minimum 5.0E+6
    Electrical Strength IPC-TM-650 2.5.6.2 Volt/mil (KV/mm) 762 (30) minimum 1200~1400 (54)
    Dielectric Breakdown IPC-TM-650 2.5.6 KV 40 minimum 60
    Comparative Tracking Index (CTI) ASTM D3638 Rating (Volt) - Grade 3 (175~250)
    Arc Resistance IPC-TM-650 2.5.1 Second 60 minimum 240
    Mechanical Properties
    Peel Strength (1oz) As received IPC-TM-650 2.4.8 lb/in (N/mm) - 10~12 (1.7~2.0)
    After thermal stress IPC-TM-650 2.4.8 lb/in (N/mm) 6 (1.05) minimum 9~12 (1.5~2.0)
    Flexural Strength Warp IPC-TM-650 2.4.4 KPsi (MPa) 60 (415) minimum 87 (600)
    Fill IPC-TM-650 2.4.4 KPsi (MPa) 50 (345) minimum 72 (500)
    Physical Properties
    Moisture Absorption IPC-TM-650 2.6.2.1 % 0.80 maximum 0.25
    Flammability UL-94 Rating V-0 minimum V-0

    Note: All test data provided are typical values and are not intended to be specification values.

    Disclaimer: The information and data contained in this technical literature is based on data and knowledge correct at the time of publishing/printing and is believed to be accurate and is offered in good faith for the benefit of the user. The user should make his own tests to verify the suitability of this product for any application before its use. All data are typical values only and subject to change without notice.

    Published on: 19/03/2020

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