Introduction: PCB boards come in various types, each with distinct specifications impacting materials, prices, and parameters. This knowledge aids in material selection by providing insights into their characteristics. Grades range from 94HB to FR-4.
PCB Grades and Specifications:
- 94HB: Ordinary cardboard, non-fireproof, suitable for die punching but not recommended for power supply boards.
- 94V0: Flame-retardant cardboard, die-punched for improved safety.
- 22F: Single-sided half glass fiber board, die-punched for specific applications.
- CEM-1: Single-sided fiberglass board requiring computer drilling, not suitable for die punching.
- CEM-3: Double-sided semi-glass fiber board, cost-effective for simple double-sided boards, 5-10 yuan/square meter cheaper than FR-4.
- FR-4: High-quality double-sided fiberglass board.
Additional Insights:
- Flame Retardant Grades: 94V-0, V-1, V-2, 94-HB, indicating varying flame retardant properties.
- Semi-Cured Film Thickness: 1080=0.0712mm, 2116=0.1143mm, 7628=0.1778mm.
- Material Clarification: FR4 CEM-3 denotes a glass fiber board, with CEM-3 being a composite substrate.
- Halogen-Free Consideration: Materials free of halogen elements for environmental protection during burning.
- Tg (Glass Transition Temperature): Critical for flame resistance, Tg signifies the point where the PCB softens without burning, ensuring dimensional stability.
About WellCircuits: WellCircuits specializes in high-precision PCB production, offering double-sided, multi-layer, impedance-controlled, blind-buried vias, and thick copper circuit boards. Their product range includes HDI, thick copper, backplane, rigid-flex, buried capacitance, buried resistance, and gold finger PCBs, catering to diverse customer needs. Share.