• VT-481 Laminate/Prepreg

    UL Approval: E214381 Version: B5 19/03/2020 /97/98/99/101

    General Information

    • Mid-Tg FR4.0
    • Phenolic Cure System & Lead Free Compatible
    • Excellent Thermal Reliability
    • Low Z-CTE
    • CAF Resistance
    • UV Blocking

    Application

    Computer, Communication Equipment, Instrumentation, Electronic Game Machine, 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 /97 /98 /99 /101

    Properties Test Method Units Specification Typical Value
    Thermal Properties
    Tg DSC IPC-TM-650 2.4.25 °C 150 minimum 155
    TMA IPC-TM-650 2.4.24 °C - -
    Td ASTM D3850 °C 325 minimum 345
    T260 IPC-TM-650 2.4.24.1 Minute 30 minimum >60
    T288 IPC-TM-650 2.4.24.1 Minute 5 minimum 25
    Thermal Stress @ 288°C IPC-TM-650 2.4.13.1 Second Pass 10s >600
    Z-axis CTE Before Tg IPC-TM-650 2.4.24 ppm/°C 60 maximum 45
    After Tg IPC-TM-650 2.4.24 ppm/°C 300 maximum 220
    Total Expansion (50~260°C) IPC-TM-650 2.4.24 % 3.5 maximum 2.6
    X-Y CTE IPC-TM-650 2.4.24 ppm/°C - 11~13
    MOT UL 94 °C - 130
    Electrical Properties
    DK @ 1GHz RC 50% IPC-TM-650 2.5.5.9 - 5.4 maximum 4.3
    DF @ 1GHz RC 50% 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+4 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 ASTM D495 Second 60 minimum 147
    Mechanical Properties
    Peel Strength (1oz) As received IPC-TM-650 2.4.8 lb/in (N/mm) - 7.5~10 (1.3~1.75)
    After thermal stress IPC-TM-650 2.4.8 lb/in (N/mm) 6 (1.05) minimum 7.5~10 (1.3~1.75)
    Flexural Strength Warp IPC-TM-650 2.4.4 KPsi (MPa) 60 (415) minimum 80 (560)
    Fill IPC-TM-650 2.4.4 KPsi (MPa) 50 (345) minimum 65 (450)
    Physical Properties
    Moisture Absorption IPC-TM-650 2.6.2.1 % 0.80 maximum 0.12
    Flammability UL-94 Rating V-0 minimum V-0

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

    Published on: 19/03/2020

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