• VT-4B5 SP Aluminum Base Laminate

    UL Approval: E214381 Version: B1 10/04/2018 Ventec-IMS-Pyramid-thermal-r.jpg

    General Information

    • Thermal conductivity -- 4.2W/mK
    • Ceramic Filled
    • Halogen Free
    • Flammability UL94 V0
    • MOT 130℃
    • Selective Preference Dielectric for Ultra Low Thermal Resistance


    • Matrix LED for Auto Bulb
    • High Power LED for Projector
    • Electric Power Steering

    Laminate Properties

    Item Test Method (IPC-TM-650) Unit VT-4B5 SP 50um
    Thermal Conductivity ISO 22007-2 W/m*K 4.2
    Thermal Impedance ISO 22007-2 ℃*in2/W 0.015
    Tg DSC 2.4.25 120
    Td TGA ASTM D3850 380
    Thermal Stress Solder Dip @ 288℃ Minute >=5
    Hi-Pot Withstand DC V 1000
    Breakdown Voltage AC V 3000
    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) As received 2.4.8 Lb/in 7
    CTI As received ASTM D3638 V 600
    Flammability As received UL94 Rating V0
    RTI Electric UL94 130
    Mechanical UL94 130

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

    Storage Condition & Shelf Life

    Storage Condition Temperature Room
    Relative Humidity /
    Shelf Life 24 Months

    The RCF exceeding shelf life should be retested.

    Designation of IMS Laminate

    VT-4B5 SP Designation.png



    Item Availability
    Dielectric thickness 50um
    Standard Size Imperial 18.11*24.02", 20.08"*24.02", 20.98"*24.02", 18.11"*48.03", 20.02"*48.03", 20.98"*48.03"
    Metric 460*610, 510*610, 533*610, 460*1220, 510*1220, 533*1220
    Copper weight 1/3oz, Hoz, 1oz, 2oz, 3oz, 4oz, 6oz
    Aluminum thickness 0.6mm, 0.8mm, 1.0mm, 1.2mm, 1.5mm, 2.0mm, 3.0mm
    Aluminum Alloy 1100, 5052, or as required

    Protective Film for Aluminum Plate

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

    Download TDS Datasheet