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PCB basics you must know before ordering

PCB Basics Introduction

Many people know what is PCB, but they do not know which options are available for them in manufacturing. Hence many issues occur, communication spends lots of time. For saving your time, PS Electronics compiled a short and easy-to-understand PCB basics as below.

PCB: Printed Circuit Board

Main Function: support and interconnection of components


  • In 1936, British doctor Essler proposed the PCB basics concepts and made the first PCB.
  • In 1941, the United States applied PCBs to military equipment.
  • In 1953, a double-sided PCB appeared.
  • In 1960, a multilayer PCB appeared.
  • In 1990, BUM (Building Multilayer) PCBs appeared.

PCB Basic Types: rigid PCBflex PCBrigid-flex PCB, including single-sided PCB, double-sided PCB, multi-layer PCB

pcb basics: rigid pcbPCB basics: flex pcbPCB basics: rigid-flex pcb


PCB Manufacturing Basics

Surface Finishes: HASL LF, Immersion Gold, Goldfinger, Carbon Oil, OSP, ISn, IAg, etc

PCB basic surface finish: hasl lf PCB basic surface finish: enig pcb

A PCB Basic Processing (HASL LF): Plate Cutting – PTH – Panel Gold Plated – Outer Layer – Pattern Plating – External Etching – Solder Mask – Screen Printing – HASL LF – E-test – FQC – FQA – Package

PCB Basic Standards:

  1. IPC-A-600 (Acceptable standard),
  2. IPC-6012 (For rigid PCB),
  3. IPC-6013 (For flexible PCB),
  4. IPC-TM-650 (Testing), etc.

PCB Basic Testing:

  • Solderability
  • Peel strength
  • Micro section
  • S / M adhesion
  • Gold adhesion
  • Thermal shock
  • Impedance

PCB Acceptance Class:

  • Class A 1: Applicable to general electronic products. Such as TV, toys, USB, etc.
  • Class B 2: For electronic products only for professional use. Such as computers, musical instruments, etc.
  • Class C 3: Suitable for high reliability electronic products. Such as military, aviation, etc.


PCB Application

Application Areas: Printed circuit boards are widely used in many fields such as consumer electronics, communication equipment, automotive electronics, industrial equipment, medical electronics, intelligent security, clean energy, aerospace and military products, and are indispensable electronic components in modern electronic information products. The first three application areas are primarily in the areas of communications, automotive electronics and consumer electronics.

1. In the field of communications, mobile communication terminals mainly use FPC and HDI boards, while communication equipment mainly uses rigid PCBs.​

Communication products


  • FPC is commonly referred to as a “soft board” and the core material is a flexible substrate such as a polyimide (PI) or polyester film, which is mainly used in laptops, cell phones, LCD screens and PDAs, etc.
  • HDI is known as a high density interconnect PCB. The development of HDI has promoted the development of 2G-5G mobile communication terminals, and also made high-performance touch screen mobile phones possible.

2. In recent years, the number of PCBs used in automotive electronics has been stable, but driven by smart drives and new energy technologies, cars are becoming more and more like electronic products, which is expected to become a new driving force for the development of PCB industry.

3. Due to the driving force of consumer electronics such as PCs, tablets and smartphones. The traditional consumer electronics market is becoming saturated. Many categories have slowed down and even declined, which has dragged down the development of the PCB industry.

​          Consumer electronics

Hope all of these help you to make your boards more easily, and if still any issue, just contact PS Electronics, we will offer you entire solutions based on 26 years’ manufacturing experience.

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