Technical
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

PCBA product storage period

PCBA is a printed circuit board with various components soldered on the surface. Many people pay attention to the reliability of its long-term, high-frequency operation, and need to understand its shelf life. Generally, the PCBA storage period is 2-10 years.

Factors influencing the preservation cycle of PCBA finished boards

1.Environment

A humid and dusty environment is obviously not conducive to the preservation of PCBA. These factors will accelerate the oxidation and contamination of PCBA and shorten the shelf life of PCBA. Generally, it is recommended to store PCBA in a dry, dust-free space with a constant temperature of 25 degrees Celsius.

2.Reliability of components

The reliability of components on different PCBAs also determines the shelf life of PCBA to a large extent. Components with high-quality materials and processes have the ability to withstand harsh environments, with a wider range of capabilities and stronger oxidation resistance, which is also guarantee PCBA stability.

3.Material and surface treatment process of printed circuit board

The material of the printed circuit board itself is extremely unlikely to be affected by the environment, but its surface treatment process is greatly affected by air oxidation. Good surface treatment can extend the shelf life of PCBA.

4.PCBA board operating load

The operating load of PCBA is the most important factor in its shelf life. The operation of high frequency and high load will cause continuous and high impact on circuit board circuits and components. It is more susceptible to be oxidized when affected by heat, which will cause short circuit or open circuit during long-term operation. Therefore, the operating parameters of the PCBA board should preferably be in the middle value range of the components and avoid near the peak value, which can effectively protect the PCBA and extend its shelf life.

The shelf life of PCBA is a comprehensive work, which needs to follow scientific design specifications, production process specifications and operation specifications, so that its shelf life can be extended to the greatest extent.

How to extend the storage time of pcba

1. Good storage conditions: the temperature is less than 25 degrees, the relative humidity is less than 65%, with temperature control, and no corrosive gas in the indoor environment.

2. General storage conditions: the temperature is not higher than 35 degrees, the relative humidity is less than 75%, and the indoor environment is free of corrosive gas.

The temperature of the warehouse where PCBA is stored is best controlled at 23±3℃, 55±10%RH.

For PCBA boards that have not been used for a long time, the circuit board manufacturer is best to apply a layer of conformal coating on it. The role of the conformal coating can prevent moisture, dust and oxidation. Spraying conformal coating can extend the shelf life by about 9 months.