1. In the design of PCB circuit boards, there exist numerical relationships such as voltage and current between various test points.
2. However, the PCBA processing workflow is quite complex, involving several critical steps including PCB manufacturing, component procurement and inspection, SMT assembly, DIP insertion, and PCBA testing.
3. During production, issues may arise due to equipment malfunction or improper handling.
4. Therefore, it is essential to employ professional testing equipment or manually use a multimeter to assess the test points, verifying whether the actual PCBA meets design specifications and ensuring that each product is free of quality defects.
5. PCBA circuit boards typically undergo rigorous electrical and performance evaluations before they are shipped to customers.
6. In PCBA testing, the most common methods are FCT (Functional Testing) and ICT (In-Circuit Testing) of electrical components.
7. When PCBA technology first emerged, ICT quickly became the dominant testing method.
1. Many large electronic product design companies, including those in the mobile phone industry, continue to use the ICT model for rigorous testing of original components. This approach enables quick detection of any deviations in the circuit board’s components, ensuring they meet the specified values and parameters. This helps prevent issues such as a single capacitor causing failures across the entire circuit board.
2. However, as the semiconductor industry rapidly advances, the density of electronic components has significantly increased, leading to more mature production processes and stability. Consequently, the application of ICT testing has become increasingly limited. Many small to medium-sized PCBA electronics manufacturing plants have largely abandoned ICT testing as their primary method, shifting their focus towards FCT functional testing. Typically, factories require customers to provide an FCT test plan that outlines the test procedures, the design of the test fixture, and the relevant testing steps. As a result, all PCBAs undergo rigorous FCT testing prior to shipment to ensure quality before delivery to customers.
3. Another reason for the shift from ICT to FCT is cost-effectiveness. FCT is generally more affordable as it is tailored to the customer’s design requirements. The cost of the test fixture typically ranges from 1,000 to 5,000. In contrast, ICT equipment must be supplied by specialized manufacturers, with costs varying from tens of thousands to hundreds of thousands. Additionally, the need for ICT to cover a wide range of components complicates the production of the test fixture, making it more intricate, challenging, and costly. Thus, ICT testing is primarily utilized in general-purpose equipment and production lines with large-scale output.
4. An increasing number of ICT equipment manufacturers are beginning to incorporate FCT capabilities into their devices, a trend that has become increasingly prominent. However, the difficulty in standardizing FCT testing functions complicates the development of universal FCT testing equipment. Currently, the market trend is toward customization based on the specific models and products of customers. Typically, the associated test fixture and platform are designed according to the customer’s FCT plan, with completion cycles ranging from 3 to 7 days and costs between 3,000 and 10,000 yuan. This approach is particularly well-suited for the flexible and dynamic production scenarios found in small to medium-sized PCBA processing enterprises.
2. However, the PCBA processing workflow is quite complex, involving several critical steps including PCB manufacturing, component procurement and inspection, SMT assembly, DIP insertion, and PCBA testing.
3. During production, issues may arise due to equipment malfunction or improper handling.
4. Therefore, it is essential to employ professional testing equipment or manually use a multimeter to assess the test points, verifying whether the actual PCBA meets design specifications and ensuring that each product is free of quality defects.
5. PCBA circuit boards typically undergo rigorous electrical and performance evaluations before they are shipped to customers.
6. In PCBA testing, the most common methods are FCT (Functional Testing) and ICT (In-Circuit Testing) of electrical components.
7. When PCBA technology first emerged, ICT quickly became the dominant testing method.
1. Many large electronic product design companies, including those in the mobile phone industry, continue to use the ICT model for rigorous testing of original components. This approach enables quick detection of any deviations in the circuit board’s components, ensuring they meet the specified values and parameters. This helps prevent issues such as a single capacitor causing failures across the entire circuit board.
2. However, as the semiconductor industry rapidly advances, the density of electronic components has significantly increased, leading to more mature production processes and stability. Consequently, the application of ICT testing has become increasingly limited. Many small to medium-sized PCBA electronics manufacturing plants have largely abandoned ICT testing as their primary method, shifting their focus towards FCT functional testing. Typically, factories require customers to provide an FCT test plan that outlines the test procedures, the design of the test fixture, and the relevant testing steps. As a result, all PCBAs undergo rigorous FCT testing prior to shipment to ensure quality before delivery to customers.
3. Another reason for the shift from ICT to FCT is cost-effectiveness. FCT is generally more affordable as it is tailored to the customer’s design requirements. The cost of the test fixture typically ranges from 1,000 to 5,000. In contrast, ICT equipment must be supplied by specialized manufacturers, with costs varying from tens of thousands to hundreds of thousands. Additionally, the need for ICT to cover a wide range of components complicates the production of the test fixture, making it more intricate, challenging, and costly. Thus, ICT testing is primarily utilized in general-purpose equipment and production lines with large-scale output.
4. An increasing number of ICT equipment manufacturers are beginning to incorporate FCT capabilities into their devices, a trend that has become increasingly prominent. However, the difficulty in standardizing FCT testing functions complicates the development of universal FCT testing equipment. Currently, the market trend is toward customization based on the specific models and products of customers. Typically, the associated test fixture and platform are designed according to the customer’s FCT plan, with completion cycles ranging from 3 to 7 days and costs between 3,000 and 10,000 yuan. This approach is particularly well-suited for the flexible and dynamic production scenarios found in small to medium-sized PCBA processing enterprises.
