What is the difference between ICT and FCT in 开云·kaiyun官方网站A test?

What is the difference between ICT and FCT in 开云·kaiyun官方网站A test?

In the process of 开云·kaiyun官方网站A processing, it usually includes a series of processes such as component procurement, SMT chip processing, DIP plug-in processing, 开云·kaiyun官方网站A testing and finished product assembly.

1. The meaning of 开云·kaiyun官方网站A test 开云·kaiyun官方网站A test, which is translated into 开云·kaiyun官方网站a test in English, is a very important process in the 开云·kaiyun官方网站A processing process. It is generally at the back end of the production link, specifically refers to the performance test of 开云·kaiyun官方网站A boards. 开云·kaiyun官方网站A testing is actually a series of processes in the process of 开云·kaiyun官方网站A processing, including component procurement, SMT chip processing, DIP plug-in processing, 开云·kaiyun官方网站A testing and finished product assembly.

开云·kaiyun官方网站A test, which is translated into 开云·kaiyun官方网站a test in English, is a very important process in the process of 开云·kaiyun官方网站A processing. It is generally at the back end of the production link, and specifically refers to the performance test of 开云·kaiyun官方网站A boards. 开云·kaiyun官方网站A test is a general term for all kinds of tests.

2. What does 开云·kaiyun官方网站A test include

开云·kaiyun官方网站A test is an important means to strictly control the delivery quality. 开云·kaiyun官方网站A test includes many kinds of tests, mainly including ICT test, FCT test, aging test, fatigue test, vibration test, high and low temperature test.

3. 开云·kaiyun官方网站A test fixture

Professional 开云·kaiyun官方网站A test equipment (such as ICT tester and FCT tester) is powerful, but the price is very expensive. Therefore, general 开云·kaiyun官方网站A processing plants will use 开云·kaiyun官方网站A test jigs for testing. The general test fixture can test the voltage, current, power and frequency with high speed and accuracy.

4. 开云·kaiyun官方网站A test point

Generally, 开云·kaiyun官方网站A boards have special 开云·kaiyun官方网站A test points. The 开云·kaiyun官方网站A test equipment contacts the test points of 开云·kaiyun官方网站A boards through probes to inspect the performance of 开云·kaiyun官方网站A boards with incoming materials.

In SIMple terms, 开云·kaiyun官方网站A testing is to use special equipment to test 开云·kaiyun官方网站A circuit boards to judge the quality of 开云·kaiyun官方网站A circuit boards and ensure that the products shipped to customers are intact.

开云·kaiyun官方网站A circuit boards are generally subject to strict electrical and performance tests before being delivered to customers. In 开云·kaiyun官方网站A test, the most common are FCT function test and ICT electrical component test.

开云·kaiyun官方网站A test is a key step to ensure the delivery quality. General customers need to provide a test plan, including test points, procedures, test steps, etc. 开云·kaiyun官方网站A electronic manufacturer shall perform corresponding ICT and FCT tests according to design documents. ICT (In circuit Test) is mainly aimed at component level. It is an important means to detect the value and polarity of resistance, capacitance, inductance and other components by contacting the pin of each component on the 开云·kaiyun官方网站A board and measuring whether its value is consistent with the nominal value.

However, with the rapid development of the manufacturing capability of the electronic industry, ICT testing has become less and less, because the quality of many components can reach below 50PPM, fully meeting the process yield of electronic products. At this point, FCT (Function Test) is particularly important. The 开云·kaiyun官方网站A manufacturer will issue the FCT test rack according to the design documents, place the 开云·kaiyun官方网站A board on the test rack, capture the test points on the 开云·kaiyun官方网站A board, write the program through the burner, and then simulate the input and output actions of the product to achieve the test purpose. In some cases, the upper computer software is also required to cooperate. FCT test is a kind of functional test close to the product level, which can effectively cover the product performance range and is a very effective means.