Fast identification of PCB green product identification
The understanding of restricted use of metals and substances is based on the analysis of their potential harm to human body.
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What is the difference between gold plating and silver plating on PCB?
From this point of view, whether gold or silver, the purpose of the process itself is to prevent oxidation, protect the pad, so that it in the following welding process to ensure yield.
Influence of PCB surface treatment technology on SMT welding quality
The PCBA project should be completed in seven steps: first, preliminary preparation stage, second, design and development, third, design and editing of operation instruction of SMT production process, fourth, confirmation of steel mesh production ability,
How does PCB design distinguish between analog and digital?
Generally, there are several ways to deal with analog ground and digital ground: 1, directly separate,2, digital ground and analog ground connected with magnetic beads; 3, digital and analog ground with capacitor connection, using the principle of capacit
Measures to reduce surface tension and viscosity in PCBA welding
The main measures to reduce the surface tension and viscosity in PCBA welding process are as follows: (1) increase the temperature, (2) adjust the proportion of metal alloy, (3) increase the active agent, and (4) improve the PCBA welding process environme
The reason and solution of PCBA processing soldering tin
In case of tinning, corresponding measures should be taken: 1. Adjust welding process parameters: 2. Replacement of solder alloy: 3. Replacement of components: 4. Check the surface treatment of PCB board and components: 5. Inspection equipment
Causes of PCB board bending and warping and improvement measures
PCB board bending or warping is usually caused by: 1. Temperature change: 2. Uneven plating: 3. Uneven PCB board thickness: 4. Improper plate size 5. Uneven welding: 7. Improper PCB board processing: 8. Material problems of PCB board 9. Design problems of
How does PCB design eliminate electromagnetic interference?
In the study, it is found that PCB design mainly has four aspects of interference: power supply noise, transmission line interference, coupling and electromagnetic interference
How do PCBA processing plants purchase components?
How should PCBA processing plant do a good job in component procurement: 1. PCBA component procurement channels; 2. PCBA component quality control; 3
PCB manufacturers explain in detail the factors affecting PCB price
Factors affecting PCB price: First, PCB materials used in different price diversity, second, PCB production process used in different price diversity, third, PCB itself difficulty caused by different price diversity, four, different customer requirements
What is the 01005 process? Why is 01005 process expensive in PCBA processing?
It is mainly because the thin welding paste is more likely to form a larger cavity, or the thickness gap of the weld is too small, leading to the volatiles of the welding machine more difficult to discharge through this "channel", so that the pr...
What inspection should PCB light board finish before shipment?
PCB light board shipment inspection items: 1, basic inspection, 2, electrical performance test report, 3, metallographic section analysis report, 4, impedance test
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