In PCBA processing, there are several process points in the whole process of rework and reflow: 1. Repair reflow welding curve should be close to the original welding curve. 2. In the reflux process, the heating temperature and time of each area should be
The following factors should be considered in the processing of PCBA capacitor components: first, the selection of capacitor voltage resistance, second, capacitance selection, third, capacitor medium selection,
◆ Main factors affecting the viscosity of solder paste: 1. Shape and temperature, 2. Thixotropic coefficient of solder paste, 3. Wettability of solder paste
Different welding resistance film due to the composition, content is different, and coating bonding force is not consistent, so the adhesion degree of coating and printed board welding resistance film and coating molecular polarity is closely related to t
When adding solder paste to patch processing, there are four main requirements: 1, must be uniform, 2, the amount of solder paste is different, 3, deviation, 4, to ensure that there is no collapse, the edge is neat
One of the major trends of PCB design is gradually inclined to open source hardware mode and control system, another is the explosive growth of development board, PCB design tools are now being used in more and more development board design.
In the aspect of PCB analysis, it is mainly used to measure the thermal stability or thermal decomposition temperature of PCB materials. If the thermal decomposition temperature of the substrate is too low, PCB will explode or delamination failure phenome
When designing PCB, how to avoid errors: first, data input stage, second, post-layout inspection stage, third, post-wiring inspection stage
SMT process flow chart: 1. Material preparation and inspection, 2. Template preparation, 3. Solder paste printing, 4. SMC placement, 5. Reflow welding, 6. Cleaning and inspection
smt plant basically has the following types at present: one, technology, two, processing, three, service, four, trade content
Three anti-paint, also known as PCBA electronic circuit board protective oil, the use of three anti-paint PCBA circuit board with waterproof, moisture, dust "three", cold and heat shock resistance, aging resistance, radiation resistance, salt sp...
In the use of solder paste is to pay attention to the following requirements: 1. After the solder paste is purchased, write the number for each can of solder paste. 2, in the form of sealed storage in the constant temperature and humidity of the refrigera
