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VT-468 (LK2) / VT-468 (Q) Laminate
UL Approval: E214381 Version: 13/10/2025General Information
- Halogen free & High Tg
- Very Low Dk & Extremely Low Loss
- Excellent Thermal Reliability
Application
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High-speed Network Equipment
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AI GPU
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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 445 440 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 45 40 After Tg IPC-TM-650 2.4.24 ppm/˚C 300 maximum 210 140 Total Expansion (50-260°C) IPC-TM-650 2.4.24 % 3.5 maximum 2.3 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 0.1 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.
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