The difference between ICT testing and FCT testing

In the field of electronic manufacturing, ICT testing and FCT testing are two key testing methods that each undertake different testing tasks and application scenarios. The following is a detailed comparison of these two testing methods ：

Test purpose and method

ICT testing (online circuit testing):

1.Purpose: The main purpose is to check whether the electronic components and electrical connections on the PCB are correct, including parameters such as resistors, capacitors, diodes, etc.

2.Method: Using needle bed technology, the probe directly contacts the test point to quickly scan each component.

FCT testing (functional circuit test):

1.Purpose: To verify the functionality of the entire circuit and ensure that it operates as designed, such as button response, sensor accuracy, etc.

2.Method: Conduct testing while the circuit board is powered on, simulate real environmental input signals, and observe output response.

Application stage and cost-effectiveness

ICT testing:

1.Application stage: usually carried out in the early stage of the production line, used to quickly detect defects in production and improve production efficiency.

2.Cost effectiveness: The initial equipment investment is relatively high, but in the long run, due to the high degree of automation, the unit cost is relatively low.

FCT testing:

1.Application stage: usually arranged in the final stage of the production line to ensure that the product meets design requirements, improve product reliability and stability.

2.Cost effectiveness: Low initial investment, suitable for large-scale production, but requires customized testing plans.

When choosing ICT testing and FCT testing, enterprises should consider their own production scale and product characteristics. For enterprises pursuing high efficiency and cost control, ICT testing is a good choice; For enterprises that value product quality and reliability, FCT testing is more suitable. By properly configuring these two testing methods, product quality and production efficiency can be effectively improved.