• pro-bond 7FB VT-770B PP & RCF pro-bond 7FB VT-770B(S) RCF

    UL Approval: E214381 Version: 04/03/2025

    General Information

    VT-770B  is a halogen-free, high Tg, ultra low Dk/Df, and ceramic-filled thermoset resin system in black color, specifically designed for use in multilayer PCBs with Ventec tec-speed laminates & prepregs, and it is also fully compatible with other resin systems in hybrid stack-ups.

    • Halogen free
    • Suitable for sequential laminations
    • Unreinforced adhesive for better electrical isotropic consistency
    • Excellent flow characteristics and filling ability, designed for fine line and space
    • Laser drillable
    • Excellent laser hole pattern consistency

    Application

    • Interposers
    • Anti-shake Coils
    • Probe Cards
    • Packaging Modules

    Storage Condition

    Properties Prepreg
    Storage Condition Temperature Below 23˚C (73˚F) Below 5˚C (41˚F)
    Relative Humidity Below 55% RH /
    Shelf Life 3 months 6 months

    Availability

    RCF

    Type Availability
    Dielectric VT-770B(S) --0.0043” (110 µm) VT-770B --0.0040” (100 µm) / 0.0020” (50 µm)
    Standard Size 610mmx460mm (24”x18”) 305mmx228mm (12”x9”)
    PET Film 50 µm

    Prepreg

    Glass Fabric Press Thickness (µm)
    2116 RC55% 125
    1080 RC64% 75
    106 RC71% 50

    Properties

    Properties Sheet

    Properties Test Method Units VT-770B RCF VT-770B (S) *RCF VT-770B PP
    Tg DMA IPC-TM-650 2.4.24.4 °C 260 260 260
    Td TGA ASTM D3850 °C 440 442 450
    T288 IPC-TM-650 2.4.24.1 Min >30 >30 >30
    Thermal Stress 288˚C 10sec/cycle IPC-TM-650 2.4.13.1 Cycle >30 >30 >30
    Dk @10GHz C-24/23/50 IPC-TM-650 2.5.5.13 - 2.8 3.2 3.6
    Df @10GHz C-24/23/50 IPC-TM-650 2.5.5.13 - 0.0025 0.0033 0.004
    Peel Strengh (1oz) As Received IPC-TM-650 2.4.8 lb/in 4.0 4.0 4.0
    X/Y-axis CTE Before Tg IPC-TM-650 2.4.24 ppm/°C 18 14 9~10
    Z-axis CTE Before Tg IPC-TM-650 2.4.24 ppm/°C 18 15 25
    Water Absorption IPC-TM-650 2.6.2.1 % 0.1 0.1 0.1
    Flammability UL-94 Rating V-0 V-0 V-0

    *VT-770B(S) refers to with chopped fiber. All test data provided are typical values and not intended to be specification values. 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.

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