Datasheets & Specifications

LAMINATE SPECIFICATION

WHAT IS FR4 LAMINATE?

FR4 laminate is the most common specification of copper clad laminate used to manufacture PCBs. The laminate is composed of an insulator made up of glass cloth, bound with epoxy resin and a flame retardant, between thin copper sheets. FR-4's attractive properties include: low cost, high strength, low moisture absorption, and tolerance of the PCB manufacturing process.

The datasheets include these material parameters: Glass Transition Temp, Time to Delamination at elevated temperature, Decomposition Temp, Surface Resistivity, Dielectric Breakdown, Z-Axis coefficient of thermal expansion, Dielectric Constant, Dissipation Factor, Comparative Tracking Index (CTI), Peel Strength (1oz), Moisture Absorption, etc.

 

FR4 (150 deg C) middle Tg laminate Ventec VT-481TC/Laminate datasheet

This laminate is suitable for all single sided, double sided, & multi-layer PCBs & lead-free assembly operations with a middle range heat tolerance typical for FR4.

 

Fr4 (180 deg C) high Tg laminate Ventec VT-47 Laminate datasheet

This laminate is suitable for all single sided, double sided, & multi-layer PCBs & lead-free assembly operations with a higher range heat tolerance typical for FR4.

 

Polyimide (250 deg C) high Tg laminate Ventec VT-90H Laminate datasheet

This laminate is suitable for all single sided, double sided, & multi-layer PCBs & lead-free assembly operations with a very high range heat tolerance.

ALUMINIUM BASE COPPER CLAD LAMINATE SPECIFICATION

WHAT IS ALUMINIUM BASE COPPER CLAD LAMINATE?

Aluminium base copper clad laminate is commonly a thin sheet of copper clad FR4 bonded to a thicker sheet of aluminium which acts as a heat-sink. The bulk of aluminium clad PCBs are single sided smd only circuits. The presence of a conduction layer of aluminium prevents the use of through hole components. The superior heat dissipation of aluminium clad laminate allows the design of smaller lower cost PCBs with thinner tracking, and denser component population than would otherwise be possible with standard FR 4 laminate.

This data provides information about: Aluminium thickness, FR4 dielectric thickness, Copper thickness, Overall thickness, Thickness tolerance, Thermal conductivity, Flammability rating, & UL file number. This data is frequently required by circuit designers.

Aluminium clad VT-4A2 laminate Link to specification and datasheet