How to Judge the Acceptance of PCB Quality
Which Color Circuit Board Sells the Most Expensive
Method to Solve the Noise Interference of Power Supply on High-frequency PCB Board
Disassembly Skills of Chip Components on PCB
What Factors Should Be Considered in the Selection of High-frequency PCB CCL
How to Place Special Components during PCB Layout
What Are the Functions of Capacitors in Circuits?
Testing Techniques for Common Electronics Components
What to do if There is a Short Circuit on the PCB
Desoldering Principles and knowhow during PCBA Processing
Black Oxidation of the Inner Layer of the Multilayer PCB
How to Ensure the High-performance Design of PCB
What Is the Printing Process of SMT Solder Paste?
PCB without fiducial mark, Is There Any Way to do SMT for It
What Are the Benefits of Reserving Break-up Tab for PCB Production
How Does SMT Affect PCB Production Time and Speed It Up
Classification of PCBs from three aspects
Common Problems and Solutions for Dry Film pasting during PCB Manufacturing process
Several Elements to Inspect after PCB Design
What is a halogen-free circuit board?
What Do Capacitive Coupling and Decoupling Mean?
What Are the Differences Between PCB Paste Mask and Solder Mask?
How PCBA Is Packaged and Shipped
How long can PCBA finished products be stored?
What Are the Differences and Relations Between PCB, PCBA, and SMT?
PCB Baking Specifications
PCB "Solder Mask Tenting" and "Solder Mask Opening"
Five reasons for PCB deformation and six solutions
Importance of first article inspection of PCBA board
Temperature zone standard for SMT reflow soldering
Small and medium volume PCB manufacturers in China
The main reason for PCBA cleaning
For power filter, the more capacitors, the better?
What does PCBA programming mean?
Content of PCB incoming testing
What conditions must be met for PCB circuit board soldering?
What is Blind via and Buried via
PCBA Manufacturers Temperature and Humidity Sensitive Components Management
Why choose Shenzhen SMT processing factory?
How long does it take to calculate the quotation for PCBA manufacturing?
Introduction of PCB design clearance requirements
Explanation of BOM, DIP, SMT, SMD
Introduction of the process of PCBA prototype
How to prevent pseudo soldering or cold soldering defects in PCBA manufacturing?
Factors that affect the Price of FPCB
What information is required for SMT processing at PCBA factory?
Skills of using 0ohm resistor in PCB design
How to select a PCBA manufacturer
SMT processing solder joint quality inspection
Characteristics difference between immersion gold PCB and gold plating PCB
Common malfunctions of Circuit Board Caused by Moisture
A Few Rules about PCB Panelization
Compare of multi-layer PCB with single/double layer PCB
Why do we need to introduce so many subdivided GND
Difference between immersion gold boards and gold plating boards
Aluminum PCB structure
Classification of different GND in circuit
Why PCB baking is necessary during manufacturing process
The handle and precautions of OSP board in SMT process
How to choose capacitors for filter decoupling
How to choose filter capacitor for switching power supply
5 database need for SMT process
Function of three-terminal capacitor
Introduction of PCB OSP surface treatment
Method of inspecting the quality of SMT by step
How to find the short point between VCC and GND
Difference between 850nm and 940nm infrared LED
Component layout of PCB SMT DFM
Pad shape influence on the strength and reliability of the soldering joints
The difference between high temperature solder paste and low temperature solder paste
Introduction to manual welding processing
Manual visual inspection in PCBA processing
Characteristics of the conformal coating process
Difference between hardware engineers and software engineers
PCBA processing operation rules
China PCB upstream materials has continued to soar
Difference between serial buses and parallel buses
The key points of quality control in PCBA processing
Common causes of solder beading during SMT process
Analysis of the advantages and disadvantages of HASL PCB surface
Requirements for layout of components during SMT assembly
Selection of electronic components and CCL for PCBA
Performance and appearance quality inspection of components.
Quality and Reliability of SMT Chip Processing and Production
Coupling and decoupling function of capacitor
Two methods to connect digital ground and analog ground
Common sense in SMT process

5 database need for SMT process

Each PCB board is different, representing different products, and electronic products that need to be mounted need to pass SMT process, so how do you edit the placement machine before processing, that is, how to position it? 

A complete placement program should include the following aspects:
1. Component placement data
Simply to say, the component placement data is to specify the position, angle, model number etc. of the components to be placed on the PCB. The placement data includes component part number, designator, X coordinate, Y coordinate, placement angle, etc. The origin of the coordinate is generally taken at the lower left corner of the PCB.

2. Fiducial marks data
Including reference point, coordinates, color, brightness, search area, etc. Before the placement cycle begins, the camera on the placement head will first search for fiducial marks. After the fiducial mark is found, the camera reads its coordinate position and sends it to the placement system microprocessor for analysis. If there is an error, the computer sends instructions and the placement system controls the movement of the execution component, so that the PCB can be accurately positioned. There should be at least two reference points to ensure accurate positioning of the PCB.

3. Component database
There are component sizes, pin numbers, pin spacing and corresponding nozzle types in the library.

4. Feeder arrangement data
The feeder arrangement data specifies the feeder selected for each component and the placement position on the placement machine's feeding platform.

5. PCB data
PCB data includes setting the size, thickness, and panel data of the PCB.

After the previous work is completed, the program should be optimized. The placement program optimization ideas of Sony, Siemens and Europlacer are all the same. They are all based on a certain algorithm to make the placement line between the placement machines and one machine, the placement time between several heads and the number of components placement reach a balance, so as to pursue the highest SMT production efficiency. 

After the program is optimized, it can be used for SMT chip processing and production. The programmer must pay attention to the debugging problems during the first production, and constantly analysis and summarize, to minimize the debugging downtime due to programming problems, and create for the enterprise more value.