RO4000® Series Laminates are high-performance, cost-effective materials engineered for RF, microwave, and high-speed digital applications. This data sheet outlines the electrical, mechanical, and thermal properties of RO4003C™ and RO4350B™, enabling informed material selection and application design.

1. Product Overview

Property	RO4003C™	RO4350B™
Material Composition	Glass-reinforced hydrocarbon/ceramic	Glass-reinforced hydrocarbon/ceramic
Dielectric Constant (Dk)	3.38 ± 0.05 (10 GHz)	3.48 ± 0.05 (10 GHz)
Loss Tangent (Df)	~0.0027 (10 GHz)	~0.0037 (10 GHz)
Flammability Rating	UL 94 V-0	UL 94 V-0

2. Key Features

RO4003C™:

• Stable Dk and Df: Optimized for minimal signal distortion.
• Low Loss: Excellent for high-frequency applications.
• Processability: Compatible with standard FR-4 processing techniques.

RO4350B™:

• Thermal Stability: Enhanced thermal properties for high-power applications.
• Improved Df: Slightly higher loss tangent, ideal for cost-sensitive applications requiring stability.
• Oxidation Resistance: Ensures long-term reliability.

3. Electrical Properties

Parameter	RO4003C™	RO4350B™
Dielectric Constant (Dk)	3.38 ± 0.05	3.48 ± 0.05
Loss Tangent (Df) @ 10 GHz	~0.0027	~0.0037
Surface Resistivity (Ω/sq)	≥10⁸	≥10⁸
Volume Resistivity (Ω-cm)	≥10⁸	≥10⁸

4. Thermal Properties

Parameter	RO4003C™	RO4350B™
Coefficient of Thermal Expansion (CTE), X/Y	~11 ppm/°C	~13 ppm/°C
CTE, Z-axis	~46 ppm/°C	~50 ppm/°C
Glass Transition Temperature (Tg)	>280°C	>280°C
Decomposition Temperature (Td)	425°C	390°C

5. Mechanical Properties

Parameter	RO4003C™	RO4350B™
Tensile Strength	~50 MPa	~50 MPa
Flexural Strength	~100 MPa	~100 MPa
Peel Strength (1 oz Cu)	~1.0 N/mm	~1.1 N/mm
Density	1.37 g/cm³	1.40 g/cm³

6. Fabrication Guidelines

• Drilling: Use carbide or diamond-coated tools with optimized feed rates.
• Lamination: Compatible with Rogers prepregs for multi-layer constructions.
• Soldering: Supports lead-free and traditional soldering techniques.
• Etching: Standard copper etching processes are suitable.

7. Applications

• RO4003C™: High-frequency filters, couplers, and antennas.
• RO4350B™: High-power RF and microwave applications, automotive radar, and base station infrastructure.

8. Availability

• Thickness: Ranges from 0.008” (0.203 mm) to 0.060” (1.524 mm).
• Copper Cladding: Available in ½ oz, 1 oz, and 2 oz options.
• Panel Size: Standard sizes of 18” x 24” (457 mm x 610 mm) and 24” x 36” (610 mm x 914 mm).

9. Regulatory Compliance

• RoHS and REACH Compliant: Free from hazardous substances.
• UL Certification: UL 94 V-0 flame retardancy.