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Time of issue:2020-07-15 00:00:00
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PCBA technical articles
Reasons and countermeasures of PCBA processing throwing materials
Reasons
As we all know, PCBA processing is an indispensable step in the SMT production process, and the quality of PCBA determines the quality of electronic products. Therefore, a good electronic product is inseparable from high-quality PCBA.
However, in PCBA processing, some production problems are often encountered, such as PCBA processing throwing. The following Sanjing introduces the reasons for PCBA processing throwing materials:
The first one may be the nozzle problem. The suction nozzle is deformed, blocked or damaged, resulting in insufficient air pressure and air leakage, resulting in the suction nozzle being unable to pick up material or picking up incorrectly, and the system cannot...
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As we all know, PCBA processing is an indispensable step in the SMT production process, and the quality of PCBA determines the quality of electronic products. Therefore, a good electronic product is inseparable from high-quality PCBA.
However, in PCBA processing, some production problems are often encountered, such as PCBA processing throwing. The following Sanjing introduces the reasons for PCBA processing throwing materials:
The first one may be the nozzle problem. The suction nozzle is deformed, blocked or damaged, resulting in insufficient air pressure and air leakage, resulting in the suction nozzle being unable to pick up material or picking up incorrectly, and the system cannot...
About PCBA assembly reliability
About
Assembly reliability, also known as process reliability. It usually means that the normal operation will not be damaged when PCBA is assembled and soldered. Therefore, if you want to ensure the reliability of PCBA assembly, you have to start from two aspects, one is the design, and the other is the assembly process. Let's take a look at the following Sanjing:
(1) From the design perspective: If the design is improper, the solder joints or components are easily damaged or damaged. Therefore, when designing, ①BGA, chip capacitors, crystal oscillators and other stress-sensitive devices should be placed where the PCB is not easily...
See more information
Assembly reliability, also known as process reliability. It usually means that the normal operation will not be damaged when PCBA is assembled and soldered. Therefore, if you want to ensure the reliability of PCBA assembly, you have to start from two aspects, one is the design, and the other is the assembly process. Let's take a look at the following Sanjing:
(1) From the design perspective: If the design is improper, the solder joints or components are easily damaged or damaged. Therefore, when designing, ①BGA, chip capacitors, crystal oscillators and other stress-sensitive devices should be placed where the PCB is not easily...
The benefits of PCBA proofing and how to improve the efficiency of proofing
The
We know that in the electronic processing and production industry, we often encounter urgent orders. Whether it is an outsourcing form of PCBA production and processing or the company's production department first completes the proofing and then mass production, the finished products that need to be completed are made in advance to check for omissions and modify them into qualified products before mass processing and production. Therefore, PCBA processing and proofing can improve productivity and production processing speed to a certain extent.
For PCBA processing and proofing, the fewer errors, the better the quality. The purpose of PCBA proofing is to reduce the occurrence of errors, especially in urgent orders and large-volume orders, but sometimes in order to ensure quality,...
See more information
We know that in the electronic processing and production industry, we often encounter urgent orders. Whether it is an outsourcing form of PCBA production and processing or the company's production department first completes the proofing and then mass production, the finished products that need to be completed are made in advance to check for omissions and modify them into qualified products before mass processing and production. Therefore, PCBA processing and proofing can improve productivity and production processing speed to a certain extent.
For PCBA processing and proofing, the fewer errors, the better the quality. The purpose of PCBA proofing is to reduce the occurrence of errors, especially in urgent orders and large-volume orders, but sometimes in order to ensure quality,...
Problems that need to be paid attention to when making ICT fixtures by PCBA
Problems
We know that PCBA fixture is indispensable in PCBA production and manufacturing. It is an important testing tool used to test PCBA products for defects. However, if you want the feedback of PCBA products to be more accurate during the testing process, you must be very rigorous and careful when making PCBA fixtures. Today, Sanjing will mainly take you to understand the issues that need to be paid attention to when making ICT fixtures:
(1) Selection of test points: Try to avoid double needles under the fixture, and it is best to place the test points on the same side. The priority order of selected points to be tested is: test point-DIP component pin-VIA via-SMT patch pin.
(2) Test point: ①The center distance between the two tested points or the tested point and the pre-drilled hole shall not be less...
See more information
We know that PCBA fixture is indispensable in PCBA production and manufacturing. It is an important testing tool used to test PCBA products for defects. However, if you want the feedback of PCBA products to be more accurate during the testing process, you must be very rigorous and careful when making PCBA fixtures. Today, Sanjing will mainly take you to understand the issues that need to be paid attention to when making ICT fixtures:
(1) Selection of test points: Try to avoid double needles under the fixture, and it is best to place the test points on the same side. The priority order of selected points to be tested is: test point-DIP component pin-VIA via-SMT patch pin.
(2) Test point: ①The center distance between the two tested points or the tested point and the pre-drilled hole shall not be less...
What aspects should be paid attention to when choosing solder paste for PCBA processing
What
In the PCBA processing process, laymen may think that the solder pastes are all the same, but in fact, the solder pastes used are different for different processed products. So, how to choose the right solder paste in different PCBA processing processes? Let's take a look at the following Sanjing.
The composition and purity of solder paste alloy powder are also different, oxygen content, particle shape, size, etc., will have a great impact on welding. Especially in the welding process, these factors may play a decisive role in welding quality. Therefore, when choosing solder paste, you need to pay attention to the following points:
(1) Choose the activity of solder paste according to the storage time of PCB and components: PCBA and components at different...
See more information
In the PCBA processing process, laymen may think that the solder pastes are all the same, but in fact, the solder pastes used are different for different processed products. So, how to choose the right solder paste in different PCBA processing processes? Let's take a look at the following Sanjing.
The composition and purity of solder paste alloy powder are also different, oxygen content, particle shape, size, etc., will have a great impact on welding. Especially in the welding process, these factors may play a decisive role in welding quality. Therefore, when choosing solder paste, you need to pay attention to the following points:
(1) Choose the activity of solder paste according to the storage time of PCB and components: PCBA and components at different...
PCBA processing quality agreement
PCBA
1. PCB circuit board manufacturing. After receiving the PCBA order, analyze the Gerber file, pay attention to the relationship between the PCB hole spacing and the board's bearing capacity, do not cause bending or breakage, and whether the wiring considers key factors such as high-frequency signal interference and impedance.
2. Procurement and inspection of components. The procurement of components requires strict control of channels, and must be picked up from large traders and original factories, and 100% avoid second-hand materials and fake materials. In addition, a special inspection post for incoming materials is set up, and the following items are strictly inspected to ensure that the components are free of faults.
3. SMT Assembly processing. Solder paste printing and reflow oven temperature control are key...
See more information
1. PCB circuit board manufacturing. After receiving the PCBA order, analyze the Gerber file, pay attention to the relationship between the PCB hole spacing and the board's bearing capacity, do not cause bending or breakage, and whether the wiring considers key factors such as high-frequency signal interference and impedance.
2. Procurement and inspection of components. The procurement of components requires strict control of channels, and must be picked up from large traders and original factories, and 100% avoid second-hand materials and fake materials. In addition, a special inspection post for incoming materials is set up, and the following items are strictly inspected to ensure that the components are free of faults.
3. SMT Assembly processing. Solder paste printing and reflow oven temperature control are key...
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