ThunderClad 400G

Super Low Loss and High Thermal Reliability Laminate and Prepreg
Core: TU-885 Sp; Prepreg: TU-885P Sp

ThunderClad 400G (TU-885 Sp) is a super low loss category material based on a high performance resin. This material is reinforced with low Dk woven glass fabric and designed with super low dielectric constant and dissipation factor resin system for high speed low loss, radio frequency and wireless applications. ThunderClad 400G material is suitable for environmental protection lead free process and also compatible with FR-4 processes. ThunderClad 400G laminates also exhibit excellent moisture resistance, improved CTE, superior chemical resistance, thermal stability and CAF resistance.

Main Applications
400G Switch
Backplane, High performance computing
Line cards, Storage
Telecom, Base station
Radio Frequency
Key Features
Excellent electrical properties & MOT level
Dielectric constant less than 3.4
Dissipation factor less than 0.0020
Stable and flat Dk/Df performance over frequency and temperature
Compatible with modified FR-4 processes
Excellent moisture resistance and Lead Free reflow process compatible
Improved z-axis thermal expansion
Anti-CAF capability
Excellent through-hole and soldering reliability
Halogen Free
Property Typical Values
Tg (DMA) 240°C
Tg (TMA) 200°C
Td (TGA) 430°C
CTE z-axis (50 to 260 °C) 2.0%
T-260/ T288/ T300 > 60 min/ > 60 min/ > 60 min
Permittivity (RC 64%) @10GHz 3.25
Loss Tangent (RC 64%) @10GHz 0.0018
Industry Approvals
UL File Number : E189572
ANSI Grade : No-ANSI
Flammability Rating: 94V-0
Maximum Operating Temperature: 160°C
Standard Availability
Thickness: 0.002”[0.05mm] to 0.062” [1.58mm], available in sheet or panel form
Copper Foil Cladding: 1/3 to 3 oz for built-up & double sides
Prepregs: Available in roll or panel form
Glass Styles: 1035, 1078, 2113, 2116 and other prepreg grades are available upon request