刚性PCB — Durable, 可靠的, Flame-Resistant
刚性PCB is one of the three major types of Printed Circuit Boards (PCBs), alongside Flex PCBs and Rigid-Flex PCBs, classified by the substrate’s flexibility and application needs.
What is a Rigid PCB
Rigid PCBs are made from solid and inflexible materials such as:
🔹 Phenolic resin
🔹 Epoxy resin
🔹 Polyester glass
🔹 Most commonly: FR-4
FR-4 refers to a fire-retardant material composed of epoxy resin (as a binder) and electronic-grade fiberglass cloth (as reinforcement), laminated with copper foil.
PCB Layers Available
Rigid PCBs are available in multiple layer configurations:
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Single-Layer PCB
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Double-Layer PCB
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Multi-Layer PCB — up to 40+ 层数
Layer count depends on the complexity of the circuit design and the requirements of the end product.
Key Benefits of Rigid PCBs
✅ Excellent Dimensional Stability
Rigid PCBs maintain their shape and do not deform under pressure or heat over their lifecycle.
🔥 Flame Resistance
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Most rigid PCBs have a temperature resistance of up to 130°C
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High-performance boards can resist up to 170°C
Applications of Rigid PCBs
Rigid PCBs are essential for durable electronics and core control systems. Common uses include:
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Motherboards
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Control boards
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Button boards
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Charger boards
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Sensor boards
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Consumer electronics
Summary
Rigid PCBs are the backbone of stable, high-performance electronic products. With:
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Strong mechanical support
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Flame retardant properties
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Flexibility in layer design
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Long product life cycles
They are ideal for high-precision and reliability-demanding applications.