Step 1: Solder Paste Printing

Solder paste printing is the first step in PCBA processing. We apply solder paste to the area of the printed circuit board where components need to be assembled. This step is accomplished by applying solder paste on the stainless steel template, which corresponds to the circuit board, and the solder paste drips from the holes of the template onto the PCB. 96.5% tin is gray and it contains 3% silver and 0.5% copper. In order to protect the environment, FS Technology uses lead-free solder paste. The solder paste will be heated and melted in step 3 and form a strong joint

Step 2: Pick and Place of Components

The second step of the PCBA processing flow is to place the components on the PCB, which is completed by a high-speed SMT placement machine. At design time, the PCB designer creates a file, which is used to control the SMT device. The file identifies the X, Y coordinates of the PCB assembly, and thanks to this information, the pick and place machine accurately places the SMD components on top of the solder paste through the vacuum nozzle.

We usually use turbidity to measure the quality of water, which is considered accurate and it can clearly reflect the quality of water. In fact, we consider particles in water larger than 2 microns to be turbid.

Next we will make a simple electronic project of water turbidity indicator. Before starting this project we need to prepare some cheap PCB components and understand the general concept of water turbidity indicator.

あらかじめ用意する必要のあるプリント基板部品または消耗品

Arduino Uno Rev3

Arduino Unoは、ATmega328P(データシート)をベースにしたリジッドPCBマイクロコントローラボードです。14本のデジタル入出力ピン（うち6本はPWM出力として使用可能）、6本のアナログ入力、16MHzセラミック振動子（CSTCE16M0V53-R0）、USB接続、電源ジャック、ICSPヘッダー、リセットボタンが搭載されています。マイコンのサポートに必要なものはすべて含まれています。USBケーブルでコンピュータに接続するか、AC-DCアダプタまたはバッテリで電源を供給すれば、すぐに使用することができます。何か間違ったことをする心配をせずにUnoをいじることができ、最悪の場合は数ドルでチップを交換してやり直すことができます。

PCB wiring is a key factor in ESD protection, FS Technology believes that a reasonable PCB design can reduce unnecessary costs caused by fault inspection and rework. In PCB design, it is more important to overcome the electromagnetic interference (EMI) electromagnetic field effect generated by the discharge current, because the transient voltage suppression stopper (TVS) diode is used to suppress the direct charge injection caused by the ESD discharge.

This article will provide optimized ESD protection for PCB design criteria.

1. Circuit loop.

Summary: The PCB hype industry is also often referred to as circuit board copying, PCB copying can accomplish the removal of entire technical data sets from any electronic product, as well as product simulations and clones. So what is the cost of PCB copying? How to use PCB copy board? Then let's learn about it with FS Technology.

1. FS Technology analyzes the pcb copy board from a professional point of view

PCB clones can help businesses stay up to date and keep up with the latest trends. Bring products to market in the shortest time and with the lowest development costs. And with the support of today's nearly perfect FS technology electronic cloning technology, product quality has been consistently guaranteed.

Circuit board is a kind of electronic circuit, which is very common in our life. There are such items in computers, mobile phones and refrigerators. Printed circuit board is also called pcb board aluminum substrate, high frequency board, ultra-thin circuit board, ultra-thin circuit board, Printed (copper etching technology) circuit boards, etc., are the supports for electronic components and the provider of circuit connections for electronic components. The most common printed circuit boards use the method of printing etching resists to produce circuit patterns and circuits, so they are called printed circuit boards or printed circuit boards. Because people want smaller products, mobile phones are getting smaller and smaller, computers are getting smaller and smaller, and the circuit boards of FS Technology have become more and more refined. With the advent of the 21st century, production technology has become more and more developed. The vast majority of PCBs now use etch resists (lamination or coating), and after exposure and development, PCBs are made by etching.

The working principle of FS technology pcb

PCB is manufactured by many processes, mainly including the following processes, pads, electrical boundaries, mounting holes, vias, components, connectors, wires, filling, etc. If the pcb is distinguished according to the number of layers, it can be divided into the following common types: pcb single-layer board (Single Layer PCB), pcb double-layer board (Double Layer PCB) and pcb multi-layer board (Multi Layer PCB) three types . The main processes of these pcbs have the following functions, each of which is essential: