ThunderClad 2 Sp

Very Low Loss and High Thermal Reliability Material
Core: TU-883 Sp; Prepreg: TU-883P Sp

ThunderClad 2 Sp ( TU-883 Sp ) is a very low loss category material based on a high performance resin. This material is reinforced with low Dk woven glass fabric and designed with very low dielectric constant and dissipation factor resin system for high speed low loss, radio frequency and wireless applications. ThunderClad 2 Sp material is suitable for environmental protection lead free process and also compatible with FR-4 processes. ThunderClad 2 Sp laminates also exhibit excellent moisture resistance, improved CTE, superior chemical resistance, thermal stability and CAF resistance.

Main Applications
Radio frequency
Backplane, High performance computing
Line cards, Storage
Servers, Telecom, Base station
Office Routers
Key Features
Excellent electrical properties
Dielectric constant is 3.15 @ 10GHz
Dissipation factor is 0.0028 @ 10GHz
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) 220°C
Tg (TMA) 170°C
Td (TGA) 420°C
CTE z-axis (50 to 260 °C) 2.5%
T-260/ T288/ T300 > 60 min/ > 60 min/ > 60 min
Permittivity (RC 70%) @10GHz 3.15
Loss Tangent (RC 70%) @10GHz 0.0028
Industry Approvals
IPC-4101 Type Designation: /134
IPC-4101/134 Validation Services QPL Certified
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: 106, 1080, 2113, 2116 and other prepreg grades are available upon request
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