In the PCB industry, many friends will come into contact with conformal coatings. So, what exactly is this conformal coating? Today, let’s take a closer look. Conformal coating is a special formulation of paint primarily used to protect circuit boards and related equipment from environmental erosion. (Conformal coating refers to moisture-proof, salt spray-proof, and mildew-proof) … Read more
Solder joint processing in printed circuit board assembly (PCBA) is crucial, as the quality of solder joints directly affects the overall performance and reliability of the product. However, during actual production, issues with solder joint failure may arise. How can we reasonably address this problem? 1. Why Do Solder Joints Fail? ① Improper soldering process: … Read more
[PCB Information Network] FPC, also known as Flexible Printed Circuit, has a significantly different PCBA assembly and soldering process compared to rigid circuit boards. Due to the insufficient hardness and flexibility of FPC boards, without using dedicated carriers, it is impossible to complete basic SMT processes such as fixing, transmission, printing, and placement. 1. Pre-treatment … Read more
Breaking News! Breaking News! The electronics technology and craft now have a video channel! Welcome everyone to scan the code to check us out ☞ Only by persisting in learning can we continue to grow! Resistors are quite common in our work, and we should not underestimate these inconspicuous components, as they hold a lot … Read more
SMT Top Networking Circle A professional circle for sharing networking resources and achieving career advancement. New Platform 2020 1. FPC Preprocessing FPC boards are relatively soft and are generally not vacuum packaged when leaving the factory. They are prone to absorb moisture from the air during transportation and storage, so they need to undergo a … Read more
Similarities and Differences between Cold Soldering and Open Soldering1.Similarities Cold soldering and open soldering exhibit many similarities in their manifestations, which often leads to misidentification in practical work. Therefore, accurately identifying the similarities and differences between cold soldering and open soldering is crucial for quality control in electronic product manufacturing. The similarities between cold soldering … Read more
Public Account: Mr. High Speed Author: Wang Huidong Longlong, a PCB designer, is working hard and has a beautiful girlfriend named Lily. However, her mother is adamantly against their relationship. Despite this, her daughter is determined not to give up, ignoring her mother’s words, until her mother reluctantly agrees to give Longlong a probation period. … Read more
“ In the previous article (Why is Circuit Grounding Design Important on PCBA?), we discussed three factors that lead to common impedance coupling interference: the non-zero impedance characteristics of the common return path; multiple systems sharing a common return path; and the low noise tolerance exhibited by circuits due to their unbalanced characteristics. This article … Read more
“Grounding is considered a solution to many EMI issues. However, when grounding is done improperly, the chosen grounding scheme can become part of the problem. This article illustrates the issue of grounding coupling interference through simple examples.” 01 — Common Impedance Coupling According to Ampere’s law (the theoretical cornerstone of EMC grounding concepts – Maxwell’s … Read more
“ In the previous article (How to Control Common Impedance Interference on PCBA? – Reducing Common Impedance), we mainly discussed how to reduce interference from the perspective of lowering common impedance. However, in the design of PCBA, there are many limitations to reducing common impedance, such as the non-zero impedance characteristics of conductors. If we … Read more