Insights.

The difference between horizontal and vertical copper deposition

In the manufacturing process of PCB, there are two methods: horizontal copper deposition and vertical copper deposition.

Analysis of the Causes of Printed Circuit Board Drilling Exceeding Tolerance

PCB drilling exceeding tolerance refers to the deviation of drilling size from actual requirements.

A Selective Electroless Thick-Gold Plating Method

We describe a selective electroless thick-gold process that achieves ≥ 0.3 μm gold on selected pads and ≥ 0.1 μm elsewhere, overcoming the 0.03–0.05 μm ceiling of conventional immersion gold and the lead-routing constraint of electroplating.

What is the reason for wave soldering tin connection

Wave soldering is the process of directly contacting the welding surface of the plug-in board with high-temperature liquid tin, achieving the purpose of welding.

How to manage the material warehouse

With the popularization of electronic products, PCB are increasingly appearing in people's lives.

Analysis of PCB Layer Deviation

As the density of Integrated circuit packaging increases, the interconnection lines are highly concentrated, making multi-layer PCB widely used.

Factors affecting the solderability of PCB

Solderability of PCB refers to whether the surface of the PCB is well compatible with welding materials and processes.

Analysis of Copper Free in Printed Circuit Board Holes

We all know that without copper in the hole, it is impossible to conduct electricity, which must be avoided in PCB manufacturing.

Main factors affecting OSP film thickness

The effectiveness of oil removal directly affects the quality of film formation.Poor oil removal results in uneven film thickness.

For the E-tester needle mark of PCB

What are the causes of PCB short-circuit

A PCB is a type of PCB that is typically used to connect and support electronic components.Therefore, the quality of a PCB directly affects the performance and stability of the entire circuit.

Sihui Fuji PCBA introduction

Sihui Fuji is an electronic manufacturer targeting world-class quality levels.We can provide a complete one-stop solution from PCB design ~ PCB ~ PCBA manufacturing.

Temperature and Pressure Uniformity Testing for Multi-layer PCB Press

In the PCB manufacturing process, multi-layer PCB press is one of the important production tools.

About the Flying Probe Tester

Flying probe (also known as probe-bed) testing is a critical electrical-test step in PCB manufacturing. We cover its principle, method, and use, plus the QC procedure Sihui Fuji follows during flying-probe test.

The process of profiling

PCB is the most commonly used basic component in electronic components, which is used to fix and connect various electronic components, complete the transmission and control of electrical signals.

The Introduction of QC Inspection

QC of PCB is one of the key steps to ensure the quality of PCB, and its importance is self-evident.The main content of PCB QC includes the following aspects: 1.

E-test of PCB

During the production process of PCB, it is inevitable that external factors may cause electrical defects such as short circuits, open circuits, and leakage.

The introduction of AOI

Factors affecting PCB price

PCB are an important component of electronic products, and their prices are influenced by various factors.1.

What are the factors affecting the drilling accuracy of printed circuit boards

PCB is an indispensable component in the manufacturing of electronic products, and drilling accuracy is a crucial factor in its manufacturing process.

Factors affecting the roughness of the hole wall

The roughness of PCB hole wall refers to the unevenness of the hole wall surface, which has a significant impact on the quality and signal transmission of PCB PCB.

The difference between through-holes, buried holes, and blind holes in printed circuit boards

In electronic circuits, PCB are the connecting medium between electronic components.

Factors affecting soldering defects in PCB

Explanation of SPI and AOI in SMT process

Reasons and Solutions for PCB Blasting

PCB blasting refers to blistering of copper foil, blistering of board, delamination or dip welding, wave soldering, reflow soldering, etc.

Analysis of the Reasons for Solder Mask Stripping

Ink is one of the important factors affecting the quality of PCB, and poor quality ink is also one of the reasons for the detachment of soldering green oil on PCB.

The introduction of AVI

PCB are an important component of modern electronic equipment.The quality of PCB has a crucial impact on the performance stability and lifespan of electronic products.

The rigid-flex board of Sihui Fuji

Sihui Fuji focuses on the manufacturing of small and medium batches, high difficulty, and high reliability rigid-flex pcb.

The constant temperature and humidity experiment of PCB

The constant temperature and humidity experiment of PCB is a commonly used experimental method for quality testing of electronic PCB.

The introduction of HASL

HASL is the abbreviation for Hot Air Solder Leveling, which is a relatively simple, effective, and cost-effective process for hot air solder leveling surface treatment.

Cold-Thermal Shock Test of PCB

About the Panelization of printed Circuit Board

Panelization of pcb is the combination and splicing of multiple small-sized PCB to form a large-sized pcb.

For the hole checker

The hole checker is a device commonly used in the electronics manufacturing industry for the verification and detection of holes in PCB.

Backlight experiment

PCB production is a complex, multi-level manufacturing process, and improper control during the production process may result in many scrapping and quality defects.

The factors that affect the quality of printed circuit board

With the rapid development of the electronic product industry, PCB, as the main component of electronic products, have also entered a period of rapid development.

The etching of printed circuit board

Wet film

Wet film is a material used for manufacturing PCB.

The difference between electroplating and resin hole-plugged in PCB processing

PCB hole-plugged is usually used for the second layer of ink (green oil) after the solder mask layer to fill the heat dissipation hole (Termal pad) with the aperture less than 0.55mm.

Enlightenments on PCB manufacturing industry

For the manufacturing industry, if we want to achieve sustainable development and profitability, we need to move towards standardization and scale.Take PCB manufacturing as an example.

Two kinds of surface treatment process for Bonding board

According to the way of surface treatment, it can be divided into the following 2 types: Immersion Gold, Ni/Pd/Au.

Why should PCB circuit boards do impedance?

pcb PCB impedance refers to the resistance and reactance of the parameters, which act as a barrier to alternating current.Impedance processing is essential in pcb PCB production.

Supply and demand analysis of HDI substrate market

The continuous growth of mobile phone production drives the demand for HDI boards.China plays an important role in the world's mobile phone manufacturing industry.

The main function of the battery protection board

Voltage protection: overcharge and overdischarge, which should be changed according to the material of the battery.This seems simple, but in terms of details, there is still experience and knowledge.

DI Exposure Machine

DI exposure machine is a high-performance image processing equipment, which uses digital technology to transmit images from a computer to radioactive substances for exposure.

Causes And Solutions Of Poor Tin On The Immersion Gold PCB

The Immersion gold PCB is currently the most widely used type of material, it can be used not only in construction, but also in the manufacture of auto parts, electronic components and other fields.

Factors affecting the adhesion of PCB silk screen

PCB are one of the core components of electronic devices, and silk screen adhesion is one of the important factors affecting the quality and accuracy of PCB.

About the accuracy of pressing

The lamination of multi-layer pcb is one of the commonly used production processes in the modern electronics industry, which can enable PCB to achieve higher electronic performance.

Drilling process

The drilling is a very important process in PCB manufacturing.It is an indispensable part of the process of manufacturing PCB (PCBs).

Design of PCB panelization

A 1.6mm or 2.4mm space shall be reserved between each unit board of PCB in the panel to facilitate the division of gongs or punches.On the four corners of the panel, NPTH shall be designed.

Advantages of Ceramic Substrates

Ceramic substrates have a CTE close to silicon, excellent thermal conductivity, and high current-carrying capacity. We list nine key technical advantages of ceramic substrates for power electronics.

The aging test of PCB

Introduction of V-cut process

PCB is a type of PCB that carries key components of modern electronic products.The pattern of copper foil on the board connects wires, components, and electronic components to form a complete circuit.

For the high-quality PCB

High quality PCB are an important component of modern electronic products.

Factors affecting the ink thickness of PCB

PCB ink is a commonly used coating in the electronic industry, which can form an insulation layer on the PCB to protect it from external environmental interference.

Solderability Test of PCB

The solderability test of PCB is a very important quality inspection work in the manufacturing of electronic products.

The shrinkage problem of the printed circuit board

When the temperature difference between the center area and the edge area of the board is different, the board will have different degrees of expansion and contraction.

LDI exposure

LDI exposure machine is a machine equipment used for manufacturing PCB.LDI is the abbreviation for "laser direct imaging" in English.

Factors affecting the thickness of electroplating copper

Copper plating thickness of PCB is one of the most important parameters in PCB, because the control of parameters directly affects the performance, quality and reliability of PCB.

The difference of PCB and PWB

PCB and PWB are two commonly used terms in electronic engineering.Although these two terms may seem similar, there are some differences between them.

Metal core PCB

The metal core PCB is composed of metal boards (such as aluminum, copper, iron, silicon steel), high thermal conductivity insulating dielectric layer and copper foil.

The function of back drilling

Several Methods of Acid Etching SolutionAcid etching is the main chemical processing

Method in the PCB industry, which will produce a large amount of acid etching liquid waste.The acid etching liquid mainly contains copper, hydrochloric acid, sulfuric acid and oxidant.

How to meet EMC requirements as far as possible without causing too much cost pressure

There are usually several reasons for the increased cost of PCB to meet the requirements of EMC.The first is to increase the number of strata to enhance the shielding effect.

What is a ceramic substrate?

Possible Problems In AGV Operation

AGV, namely the automatic guided vehicle, is a kind of unmanned logistics equipment, it is widely used in industrial production lines, warehousing and logistics places and other fields.

Quality control points for PCBA processing

Regarding the issue of printed circuit board burrs

Burrs usually occur in processes such as PCB cutting and punching.

Copper exposure on the printed circuit board

PCB are a very important component in electronic products and also the core carrier for making circuits.

The introduction of DIP

DIP, the abbreviation of dual inline-pin package, is a commonly used packaging technology for electronic components.

On the Bubbling Problem of Board Lamination

When producing PCB, there is often a problem of pressing bubbles.These bubbles can cause the quality of the pcb to not meet the requirements, affecting the reliability and stability of the product.

The principle and control points of ENIG

The introduction of Sihui Fuji

Founded on August 28, 2009, Sihui Fuji Electronics Technology Co., Ltd.

About solder mask Ink

With the continuous popularization of electronic products, the demand for PCB is also increasing.One of the important steps is the blending of solder mask ink.

The 5S management of Sihui Fuji

S is a management tool that originated in Japan and stands for the five steps of Seiri, Seiton, Seiso, Seiketsu, Shitsuke aimed at improving work efficiency, quality, safety, and the environment.

About V-cut measuring instrument

PCB Finished-Product Packaging

Finished-PCB packaging directly affects quality, shipping safety, and customer experience. We cover inner/outer packaging tiers, key precautions, and cross-border shipping considerations including moisture/ESD protection, stack height, reinforcement, and labeling.

The developing process of printed circuit board

The developing is a technique based on chemical reactions used to make PCB (PCB).

Cu plating process

The Cu plating process of PCB is one of the important processes in manufacturing electronic boards.

Laser Drilling of PCB

PCB are an indispensable part of electronic products, and laser drilling technology is one of the mainstream technologies in modern production of PCB.

The Introduction to drilling process for printed circuit board

The PCB drilling process is an important step in the PCB manufacturing process, which is to drill holes in reserved positions on the PCB for the installation of various electronic components.

From Hand-wired to SMT: The Development History of PCB

With the continuous development of the electronic industry, PCB have become indispensable components in this market.

The introduction of large size board

With the continuous development of electronic technology, the demand for large size PCB is increasing.

The introduction of heavy copper board

Heavy copper PCB refers to a pcb made of high thickness copper on a PCB (PCB).It has heavier copper than a standard copper heavy PCB, typically up to 1OZ, 2OZ, or higher.

The introduction of printed circuit board thickness

PCB is one of the important components in electronic components, and it is the primary medium used to configure electronic components.

HDI application

While electronic design is constantly improving the performance of the whole machine, it is also trying to reduce its size.

What is an HDI board?

HDI is the abbreviation of High Density Interconnector, which is a (technology) for the production of PCB.HDI is a compact product designed for small volume users.

What is a copper substrate?

Copper substrate is the most expensive metal substrate, and its thermal conductivity is many times better than that of aluminum and iron substrates.

Cause Analysis And Prevention Of The Dirty Circuit Board

PCB Drilling Deviation

Drilling deviation is when hole positions drift from the design. We cover root causes — equipment wear, off-spec process, operator error — and corrective actions in three areas: equipment, process, and training.

The introduction of SMT

SMT is known as Surface Mount Technology, which is currently the most popular technology and process in the electronic assembly industry.It has extremely high application value in production.

Visual Inspection of PCB

PCB are an indispensable part of modern electronic products, carrying the function of circuit connectivity.However, even the highest quality PCB inevitably encounter some problems.

The influence of copper thickness on printed circuit boards

The pcb is one of the indispensable components in electronic engineering.It is usually a thin plate, whose surface is covered with many fine lines and wires to transmit current and signals.

For the water rinsing of printed circuit board

The water rinsing of PCB is a method of cleaning the manufactured PCB.

The introduction of FQC of PCB

FQC means final product inspection, which is responsible for conducting a comprehensive inspection of the appearance quality before shipment.

Silk screen process printing

Silk screen process printing is a common circuit making technology, which is used to make circuits on thin substrates.

Resin Plug-Hole Process

Resin plug-hole technology is increasingly used in high-layer-count, thick-board PCBs. We cover the principle, contrast with solder-plug holes, and its advantages in inner-layer buried-via filling and mechanical/electrical performance.

Water rinsing

Step 1: Preparation Before starting the PCB washing, the operator should make sufficient preparations.Firstly, inspect the production equipment to ensure they are in normal condition.

The inner pattern process of PCB

The production of inner pattern on PCB is a crucial step in electronic manufacturing, and its accuracy and quality have a significant impact on the stability and reliability of electronic products.

Lamination process of printed circuit board

The introduction of material cutting process of printed circuit board

The material cutting process of PCB plays a crucial role in the entire manufacturing process.

The classification of the printed circuit board

The PCB is most fundational part in the electronics devices.It load the electonic components and connect the different circuits, which can be considered as “vest” and “nernus”.

The introduction of PCB cross-section

PCB cross-section is an important production process for manufacturing PCB.

The prosperous of ceramic board

With the continuous progress of electronic technology, the heat dissipation problem has gradually become the bottleneck limiting the development of high-power and lightweight electronic products.

Main features of high frequency PCB

High density: In the design of mobile terminals, every millimeter of space saved can create huge value for terminal customers.

Description of Electro gold plating

Aim and function: As a precious metal, gold has the advantages of good weldability, oxidation resistance, corrosion resistance, low contact resistance, and good wear resistance of alloy.

What are the features and functions of printed circuit board?

PCB PCB is one of the most common components in the field of industrial design and equipment processing and manufacturing.

What are the characteristics of medical PCB application?

There are many types of medical devices, ranging from very ordinary standard devices to more complex devices.

What are the characteristics of ceramic substrates?

◆Strong mechanical stress, stable shape; high strength, high thermal conductivity, high insulation; strong bonding force, anti-corrosion.

Fluke Mentality vs. the Absoluteness of Quality

In quality management, any operation that may introduce a hidden defect must be prohibited. We use drunk driving as an analogy to explain why probabilistic risks in PCB manufacturing — such as laser-cutting coverlay film — must also be ruled out absolutely.

Pros and Cons of Rigid-Flex Boards

Rigid-flex PCBs combine FPC and PCB traits — both flex and rigid regions on the same board, well-suited for products with tight spatial constraints, but with complex processes, lower yield, and higher cost.