• VT-468 (LK2) / VT-468 (Q) Laminate

    UL Approval: E214381 Version: 13/10/2025

    General Information

    • Halogen free & High Tg
    • Very Low Dk & Extremely Low Loss
    • Excellent Thermal Reliability

     

    Application

    • High-speed Network Equipment 
    • AI GPU
    • 224 Gbps Backplanes

     

    Availability

    • Core Thickness: 0.002” (0.05mm) to 0.007” (0.178mm), available in sheet or panel form
    • Copper Foil: Hoz to 2oz
    • Prepregs are available in roll or panel form
    • LK2-Glass Styles: 1035, 1078

    Storage Condition

    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)

    Properties

    Properties Test Method Units Specification VT-468(LK2) VT-468(Q)
    Tg (DMA) IPC-TM-650 2.4.24.4 °C 170 minimum 220 205
    Td ASTM D3850 °C 340 minimum 440 440
    T288 IPC-TM-650 2.4.24.1 Minute 15 minimum >120 >120
    Thermal Stress @ 288˚C IPC-TM-650 2.4.13.1 Second Pass 10s >600 >600
    Z-axis CTE Before Tg IPC-TM-650 2.4.24 ppm/˚C 60 maximum 40 40
    After Tg IPC-TM-650 2.4.24 ppm/˚C 300 maximum 140 140
    Total Expansion (50-260°C) IPC-TM-650 2.4.24 % 3.5 maximum 1.5 1.5
    Dk @ 10GHz (RC 66%) Cavity Resonator - 5.2 maximum 3.1 2.5
    Df @ 10GHz (RC 66%) Cavity Resonator - - 0.0009 0.0005
    Volume Resistivity After Moisture Resistance IPC-TM-650 2.5.17.1 MΩ-cm 1.0E+4 minimum 6.00E+08 5.00E+08
    E-24/125 IPC-TM-650 2.5.17.1 MΩ-cm 1.0E+3 minimum 6.00E+06 5.00E+06
    Surface Resistivity After Moisture Resistance IPC-TM-650 2.5.17.1 MΩ 1.0E+4 minimum 6.00E+07 5.00E+07
    E-24/125 IPC-TM-650 2.5.17.1 MΩ 1.0E+3 minimum 6.00E+06 5.00E+06
    Electrical Strength IPC-TM-650 2.5.6.2 Volt/mil (KV/mm) 762 (30) minimum 1372 (54) 1400 (55)
    Dielectric Breakdown IPC-TM-650 2.5.6 KV 40 minimum 60 60
    Comparative Tracking Index (CTI) ASTM D3638 Rating (Volt) - Grade 3 (175-250) Grade 3 (175-250)
    Arc Resistance IPC-TM-650 2.5.1 Second 60 minimum 195 195
    Peel Strength (Hoz HVLP3) As received IPC-TM-650 2.4.8 lb/in (N/mm) - 4.5 (0.8) 4.0 (0.7)
    After thermal stress IPC-TM-650 2.4.8 lb/in (N/mm) - 4.5 (0.8) 4.0 (0.7)
    Flexural Strength Warp IPC-TM-650 2.4.4 Kpsi (MPa) 60 (415) minimum 80 (560) 72 (500)
    Fill IPC-TM-650 2.4.4 Kpsi (MPa) 50 (345) minimum 65 (450) 61 (420)
    Moisture Absorption IPC-TM-650 2.6.2.1 % 0.80 minimum 0.04 0.04
    Flammability UL-94 Rating V-0 minimum V-0 V-0

    All test data provided are typical and 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.

    Download TDS Datasheet