product description

FR-4 Copper-Free Laminated Sheet Specifications

Color: Nature / Yellow

Thickness: 0.05–3.5 mm

Copper Cladding: 12 μm / 18 μm / 35 μm / 70 μm / 105 μm

Heat Resistance: Class B (130°C)

Flammability: UL94-V0

FR-4 Copper-Free Laminated Sheet

FR-4 Copper-Free Laminate Features

Excellent dimensional stability for reliable performance in PCB and electronic applications.

Excellent heat resistance and mechanical properties, providing stable performance under demanding operating conditions.

Complies with IPC-4101C/21 specifications.

FR-4 Copper-Free Laminate General Properties

Test Item	Unit	Test Condition	Specification (IPC-4101C)
Peel Strength (1 oz.)	N/mm	125°C	≥0.7
Peel Strength	N/mm	Float 288°C / 10 Sec	≥1.05
Thermal Stress	Sec	Float 288°C / Unetched	≥10
Bow / Twist	%	A	≤1.0
Flexural Strength	N/mm²	Warp	≥415
Flexural Strength	N/mm²	Fill	≥345
Flammability	Rating	UL94	UL94 V-0
Glass Transition (Tg)	°C	E-2/105 (DSC)	≥130
Surface Resistivity	MΩ	C-96/35/90	≥1.0 × 10⁴
Volume Resistivity	MΩ·cm	C-96/35/90	≥1.0 × 10⁶
Dielectric Constant	–	Etched / @1 MHz	≤5.4
Loss Tangent	–	Etched / @1 MHz	≤0.035
Arc Resistance	Sec	D-48/50 + D-0.5/23	≥60
Moisture Absorption	%	D-24/23	≤0.35 (min. 0.51 mm)
Moisture Absorption	%	D-24/23	≤0.80 (max. 0.51 mm)
Z-Axis Expansion	ppm/°C	E-2/105 TMA	–
Comparative Tracking Index	V	Etched / 0.1% NH₄Cl	≥150

FR-4 Copper-Free Laminate Applications

FR-4 copper-free laminate is suitable for computers, VCRs, instruments, communication equipment, and other electronic applications requiring excellent dimensional stability, heat resistance, and mechanical strength.

FR-4 Copper-Free Laminate Purchasing Information

Base Color	Thickness (mm)	Copper Cladding (μm)	Regular Size (mm)
Nature / Yellow	0.05–3.5	12 / 18 / 35 / 70 / 105	915 × 1220 (36″ × 48″) 1020 × 1220 (40″ × 48″)

Warehouse & Packaging

FR-4 copper-free laminated sheets are carefully packed and stored to protect the material from moisture, contamination, and physical damage during storage and transportation.

>FR-4 Copper-Free Laminated Sheet