• VT-4B5L Metal Base Laminate

    UL Approval: E214381 Version: Preliminary02 30/08/2019

    General Information

    Ventec offers thermally conductive dielectric without glass reinforcement which offers the following features:

    • Thermal conductivity -- 3.6W/mK
    • Ceramic Filled
    • Halogen Free
    • Flammability UL94 V-0
    • MOT 130℃
    • Solder Joint Crack Solution


    • LED Lighting
    • Power Conversion
    • PDP, LED, Regulator for TV
    • Monitor Drives
    • Rectifier, Power Supply

    Laminate Properties

    Item Test Method (IPC-TM-650) Unit Dielectric 100μm
    Thermal Conductivity ISO 22007-2 W/m*K 3.6
    Thermal Impedance ISO 22007-2 ℃*in2/W 0.043
    Tg DSC 2.4.25 100
    Td TGA ASTM D3850 380
    CTE Alpha 1 2.4.24 ppm/℃ 28
    Elastic Modulus 30℃ GPa 0.5
    125℃ 0.2
    Thermal Stress Solder Dip @ 288℃ Minute ≥5
    Hi-Pot Withstand DC V 4000
    Dielectric Strength AC V/mil 2000
    Dk @ 1MHz C-24/23/50 - 4.8
    Df @ 1MHz C-24/23/50 - 0.016
    Volume Resistance After Moisture MΩ-cm 5.0E+8
    E-24/125 3.0E+7
    Surface Resistance After Moisture 2.0E+7
    E-24/125 5.0E+6
    Peel Strength (1oz Cu) As received 2.4.8 Lb/in 4.5
    CTI As received ASTM D3638 V 600
    Flammability As received UL94 Rating V-0

    All test data provided are typical values but not intended to be specification values. Typical thickness: 50μm, 75μm, 100μm, 150μm. Available copper foil: 18μm, 35μm, 70μm. Maximum size: 24"*21".

    Storage Condition & Shelf Life

    Storage Condition Temperature Room
    Relative Humidity /
    Shelf Life 24 Months

    Designation of IMS Laminate




    Item Availability
    Dielectric .004" (100μm)
    Standard Size 18.11”*24.02” (460mm*610mm), 18.11”*48.03” (460mm*1220mm)
    20.08”*24.02” (510mm*610mm), 20.08”*48.03” (510mm*1220mm)
    20.98”*24.02” (533mm*610mm), 20.98”*48.03” (533mm*1220mm)
    Copper Foil Hoz, 1oz, 2oz, 3oz, 4oz, 6oz
    Metal Thickness 1.0mm, 1.5mm
    Alloy Alu-CTE II, Cu-C1100

    Protective Film for Metal Plate

    Type Material Max Operation Temperature
    Standard Type PET 170℃
    High Temperature Type Polyimide 270℃

    Download TDS Datasheet