With the development of society, ICT test fixtures are becoming more and more stable in the electrical industry, and the praises of friends are endless. <br The selection of the probe is mainly based on the center distance of the circuit board of the ICT test fixture and the shape of the measuring point. The closer the point to be tested on the PCB board, the thinner the outer diameter of the selected probe. At present, the quality of domestic probes is normal. In fact, many so-called Taiwan detectors are made in China.
Generally speaking, domestic probes of 0.31mm and above pass the test, and the number of tests can be guaranteed to be 200 to 150,000. Although the product is said to be 1 million times, the actual use effect is slightly higher at this level. The difference between domestic and foreign products is the wear resistance of the electroplated coating. Because the needle material is imported raw materials, there is no difference between imported products and domestic products. big.
ICT test fixture probes usually have a variety of specifications. The needle is mainly composed of three parts: one part is a needle tube, which is mainly gold-plated with copper alloy; the other part is a spring, which is mainly gold-plated with piano wire and spring steel; the third part is a needle, which is mainly nickel-plated or gold-plated with tool steel (SK). The above three parts are assembled into probes.
The probes of the ICT test fixture are mainly shared here. In addition, the specifications of probes in different packaging forms are also different. In order to ensure that the probe meets the requirements, it is necessary to certify the type of probe that meets the requirements to ensure the smooth completion of the test. Probes are an important part of integrated circuit testing. Therefore, in order to ensure the perfect performance of the test, we should pay more attention to the selection and purchase of probes.
ICT test fixture:
1, it can quickly and comprehensively check whether the components on the printed circuit board are within our design range.
2, it is possible to find the position of poor welding as soon as possible, such as missing welding, wrong welding, open and short circuit, reverse welding, continuous welding, etc.
3, you can print out the specific information of the above-mentioned faults and defects for the reference of maintenance personnel, effectively reducing the maintenance personnel's dependence on technology, and still have the maintenance ability without understanding the product schematic diagram.
ICT is mainly suitable for:
1, batch board (reason: each board needs corresponding fixture);
2, board with high added value and fixed shape;
3 , Reduce production costs: ICT online testing and processing simplifies maintenance work, speeds up maintenance, reduces maintenance personnel, and reduces maintenance costs; reduces the cost of misjudged and damaged parts; reduces maintenance spare parts inventory.
4. Increase output: Because of the fast detection speed of the ICT online test fixture, the detection time is shorter than manual testing, which can greatly increase the output.
5. Reduce misjudgment errors: ICT can detect errors accurately and steadily, avoiding people's guesses about errors.
6. Reduce operating costs: ICT is a test of the entire circuit board, and it can also test multiple circuit boards at the same time, with only one operator.