HCT Current Resistance Test Machine PCB board
1. Product introduction
High Density Interconnections--High Density Interconnections Technology
The device can be placed in a large 650×750mm pcb board array, as long as the array board with multiple splines is fixed to the bottom;
Import through the CAD diagram, set the parameters, and perform simple programming to complete the trajectory import action;
There is no need to test each spline coordinate in turn for manual programming; the requirements for the operator are not high, as long as they understand the computer operation;
can test multiple splines at a time, especially for similar products, the test frequency is very high, thus greatly improving the detection efficiency;
HDI withstand current test system technical parameters.
2. High Density Interconnections--HDI
HDI board refers to a circuit board produced by high-density micro-wiring and micro-via technology. It is a relatively new technology developed by the PCB industry at the end of the 20th century. Compared with traditional PCBs, laser drilling technology is used (and Called laser board), the drill hole is smaller, the circuit is narrower, and the pad is greatly reduced. More circuit distribution can be obtained in all unit area. This is the result of high-density interconnection. The emergence of HDI technology has adapted and promoted With the development of the PCB industry, the requirements for the production and testing of PCB boards are higher.
3. Introduction to HDI process and current test of HDI board in reliability test
1. Test principle:
According to the HDI test board, pass a certain DC current, according to Joule's law
Joule's law: Q=I2*R*T
Q is calories
I is current
R is resistance
T is time
The temperature rise of the PCB board is proportional to the heat Q. The temperature of the PCB board will rise to the preset temperature and keep it for a certain period of time. If the PCB is not exposed to an open circuit, the test is determined to be OK.
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