ICT test is an automatic online tester. It is a necessary test equipment for PCBA production in modern electronic companies. Generally speaking, it is called an online tester. It is mainly used for testing assembled circuit boards (PCBA). By testing the components on the line Or test the open and short circuit state to detect assembly problems of the circuit board. It can test the open and short circuit, resistance, capacitance, inductance, diode, transistor, transistor, IC and other components of the circuit board, and accurately tell the user the fault problem.

PCB ICT testing is mostly suitable for large-volume PCBA production testing. ICT testing is a type of automatic online testing, mainly used for electrical testing of circuit boards (PCBA). Mainly through the test probe contacting the test points coming out of the PCB to detect open circuits, short circuits, and the soldering conditions of parts, which can be divided into the following categories:

Open circuit test: Check whether there is an open circuit fault on the circuit board.

Short circuit test: detect whether there is a short circuit fault on the circuit board.

Component function test: Check whether the components on the circuit board can work normally.

Failures such as missing or incorrect installation of components, parameter value deviation, solder joint welding, etc.: Detect whether there are other types of faults on the circuit board.

When a fault is detected, PCB ICT testing can accurately locate the fault on specific components, device pins, and network points, thereby helping maintenance personnel quickly find the fault point and repair it. Using program-controlled automated testing, the operation is simple and the test is quick and fast. The test time of a single board is generally from a few seconds to tens of seconds.

The characteristics of ICT testing pcba circuit boards: simple operation, fast testing, and the testing time of a single board is generally from a few seconds to tens of seconds.

Advantages of ICT testing pcba circuit boards:

Fast test speed and short test time

PCBA can perform L/C/R/D tests without powering on, which can effectively reduce the waiting time for test startup, and can also reduce accidental circuit board burnout caused by short circuits.

Excellent test-retestability

Controlled by a computer program, the risk of misjudgment and missed testing is greatly reduced, and the trouble on the production line is reduced.

Product maintenance costs are significantly reduced

The operator can be responsible for product maintenance, effectively reducing labor costs. ICT can tell which part has a problem through a computer program.

Improve product quality

As long as there are enough test points, ICT can measure all the circuits and components on the circuit board, which can improve product quality.

Disadvantages of ICT testing:

1. ICT equipment and fixtures are generally more expensive, especially pneumatic steel fixtures, which are more suitable for mass-produced products.

2. When using ICT testing, it is necessary to design additional test points on the circuit board for needle bed connection. Reduces circuit board wiring usage.

3. The needle bed needs regular maintenance, and the probe also needs to be replaced regularly to ensure that it and the probe operate normally.

Overall, ICT testing can improve the quality and reliability of circuit boards and help companies reduce the time and cost of repair and debugging.