paper-based laminate

paper-based laminate with copper clad phenolic paper for PCB

Paper-based boards use phenolic paper-based copper clad laminate as the substrate, with a flammability rating of 94 HB, offering good electrical insulation and economic efficiency.

Description

Phenolic paper-based copper clad laminate is a common substrate material for printed circuit boards (PCBs). It is made by using high-purity wood pulp paper as the base, which is impregnated with phenolic resin and then laminated and cured before being covered with a layer of electrolytic copper foil. Due to the use of phenolic resin and paper-based materials in its structure, this type of board is typically low in cost, has excellent mechanical properties and electrical insulation, and is suitable for the mass production of cost-sensitive electronic products.

Main Structure:

  1. Insulating Paper Base: Uses high-purity wood pulp paper, processed through multiple physical and chemical treatments to ensure the insulation and mechanical strength of the board.
  2. Phenolic Resin: The paper base is fully impregnated with phenolic resin to enhance heat resistance, moisture resistance, and overall stability.
  3. Copper Foil: The surface of the board is covered with electrolytic copper foil, making it convenient for subsequent etching and circuit pattern formation.

Main Features of Paper-based Laminate:

  1. Low cost, suitable for mass production, helps reduce product manufacturing costs.
  2. Good dimensional stability, low bending and warping, not easily deformed even after long-term use.
  3. Excellent machinability, easy for punching, drilling, and milling, suitable for automated production.
  4. Good electrical insulation, meeting the safety requirements of general electronic products.
  5. The surface is often treated with rosin to improve solderability and flatness, but due to limited heat resistance, it cannot be finished with hot air solder leveling (HASL).
  6. Lightweight material, convenient for transportation and assembly.

Main Applications of Paper-based Laminate:

  1. Widely used in the PCB manufacturing of televisions, tape recorders, audio equipment, game consoles, telephones, home appliances, and other consumer electronics.
  2. In recent years, also used in power supply boards and control circuits of oscilloscopes (CRT), office automation equipment (OA machines), and other electronic devices.
  3. Suitable for cost-sensitive, general-performance, and mild-environment electronic products.

Common Specifications:

  1. Base thickness: 0.8mm, 1.0mm, 1.2mm, 1.5mm
  2. Copper thickness: 18μm, 25μm
  3. Board size: 1020x1030mm