{"id":716,"date":"2026-05-19T08:04:00","date_gmt":"2026-05-19T00:04:00","guid":{"rendered":"https:\/\/www.han-sphere.com\/?p=716"},"modified":"2026-05-19T00:11:51","modified_gmt":"2026-05-18T16:11:51","slug":"what-is-pcb-printed-circuit-board","status":"publish","type":"post","link":"https:\/\/www.han-sphere.com\/ru\/blog\/guide\/what-is-pcb-printed-circuit-board\/","title":{"rendered":"\u0427\u0442\u043e \u0442\u0430\u043a\u043e\u0435 \u043f\u0435\u0447\u0430\u0442\u043d\u0430\u044f \u043f\u043b\u0430\u0442\u0430? \u041e\u043a\u043e\u043d\u0447\u0430\u0442\u0435\u043b\u044c\u043d\u043e\u0435 \u0440\u0443\u043a\u043e\u0432\u043e\u0434\u0441\u0442\u0432\u043e \u043f\u043e \u043f\u0435\u0447\u0430\u0442\u043d\u044b\u043c \u043f\u043b\u0430\u0442\u0430\u043c"},"content":{"rendered":"\n

Look around you. Your smartphone, your laptop, the smart coffee maker in your kitchen, and even the dashboard of your car all have one crucial thing in common: they rely on a PCB (Printed Circuit Board)<\/strong> to function.<\/p>\n\n\n\n

But what exactly is a PCB? How does it work, and why is it the foundation of modern electronics?<\/p>\n\n\n\n

In this comprehensive guide, HanSphere<\/strong> breaks down everything you need to know about Printed Circuit Boards, from their basic structure to how they are manufactured on our factory floor.<\/p>\n\n\n

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\"Rigid<\/figure>\n<\/div>\n\n\n

1. What Does a PCB Actually Do?<\/h2>\n\n\n\n

At its core, a Printed Circuit Board (PCB) is a rigid, non-conductive structure that hosts and connects electronic components.<\/p>\n\n\n\n

Before PCBs were invented, circuits were built using point-to-point wiring<\/strong>. Engineers manually soldered wires directly between components. This was messy, fragile, took up massive amounts of space, and was impossible to mass-produce.<\/p>\n\n\n\n

A PCB solves this by “printing” copper pathways (called traces<\/strong>) onto an insulating board. This allows components like resistors, chips, and capacitors to securely connect and communicate with each other in a compact, reliable, and highly repeatable setup.<\/p>\n\n\n\n

2. Anatomy of a PCB: The 4 Main Layers<\/h2>\n\n\n\n

If you look at a cross-section of a standard PCB, it looks like a multi-layered sandwich. Each layer serves a unique purpose:<\/p>\n\n\n\n

1. The Substrate (FR-4 Core)<\/h3>\n\n\n\n

The base material, or backbone, of the PCB. It is usually made of fiberglass, with FR-4<\/strong> (Flame Retardant 4) being the industry standard. It provides the mechanical rigidity and electrical insulation for the board.<\/p>\n\n\n\n

2. The Copper Layer<\/h3>\n\n\n\n

Laminated onto the substrate with heat and adhesive. This is where the magic happens. The copper is chemically etched away to leave behind the fine lines (traces<\/strong>) that carry electrical signals across the board.<\/p>\n\n\n\n