Selecting Dielectric Substrates for High Speed Multilayer Stackup Design
Selecting dielectric substrates requires balancing dissipation factor, glass weave uniformity, foil roughness, and panel yields to meet high-speed impedance targets.
Slash Sheet 130
Performance Requirement
Environmental and safety standards for circuit board materials are detailed in specific sections of the global laminate specifications. The slash sheet 130 sets the rules for halogen free laminates that offer high thermal resistance and flame retardancy. These materials are required for products sold in regions with strict environmental laws regarding the disposal of electronics.
Composition Constraint
Manufacturers must replace traditional bromine-based flame retardants with alternative chemicals that do not release toxic fumes when burned. A slash sheet 130 material provides the same level of fire protection as standard epoxy while meeting the requirements for green electronics. The specification also tracks the moisture absorption and chemical resistance of the resin to ensure it remains reliable in humid conditions.
Hardware designs often select this sheet for consumer handheld devices and telecommunications equipment that must meet global sustainability goals.
Environmental Compliance
Testing labs verify the chemical content of the laminate to confirm that the chlorine and bromine levels are below the allowed limits. The slash sheet 130 serves as the benchmark for this verification and ensures that the material is compatible with standard fabrication processes. While the resin chemistry is different, the board must still be able to withstand the same drilling and plating steps as traditional materials.
This requirement ensures that safety does not come at the expense of electrical reliability.