HDI Process PCB Board HCT Withstand Current Test Machine
Ⅰ Introduction
High Density Interconnections
HDI board refers to the circuit board produced by high-density micro-wiring and tiny through-hole technology. It is a relatively new technology developed in the PCB industry at the end of the 20th century. Compared with traditional PCB, laser drilling technology (also known as laser board) is used to drill smaller holes, narrower lines and substantially reduced pads. More lines can be distributed within all unit area. High-density interconnection results from this, and the emergence of HDI technology ADAPTS to and promotes the development of PCB industry, and at the same time requires higher production and testing of PCB board.
Ⅱ HCT Testing purposes:
Current resistance test is a test method to test the hole interconnection reliability of printed circuit board products. At present, various manufacturers need printed board suppliers to import HCT test. Current resistance test is to apply a certain DC current to a specially designed hole chain, and continue for a period of time. The current generates joule heat on the hole chain, and the heat is transferred to the base material near the hole chain. When the base material is heated, the expansion stress in the Z direction leads to the fracture of the blind hole, so as to detect the reliable interconnection performance of the hole chain.
Ⅲ Instrument accuracy and parameters:
1. DC power supply
1.1 Output range: 0-60V, 0-10A, more than 600W
1.2 accuracy of measurement
1.2.1 Voltage :1% +10mV
1.2.2 Electricity :1% +10mA
2.Temperature measuring device
2.1 Index number: Thermocouple: TYPE K
2.2 Basic accuracy: ±0.2℃±6
2.3 Test range: 0℃~300℃ (TYPE K)
2.4 Resolution: 0.1℃
2.5 Thermocouple accuracy: ±1.5℃
3.Equipment Specifications
3.1 Precision programmable power supply 0-60V, 0-10A, 600W, RS232 communication interface
3.2 K-type thermocouple multi-channel temperature recorder, RS232 interface
3.3 Industrial computer Advantech 610L, 19 inch monitor
3.4 Test stand and test fixture
