With the continuous development of electronic science and technology, PCB technology has also undergone tremendous changes, and manufacturing processes need to progress as well. At the same time, the requirements for PCB circuit board processes in various industries have gradually increased. For example, circuit boards in mobile phones and computers use both gold and copper, … Read more
Test Coupon: Commonly known as Impedance Strip The Test Coupon is used to measure the characteristic impedance of the produced PCB using a TDR (Time Domain Reflectometer). The impedances that need to be controlled generally include single-ended lines and differential pairs, so the trace width and spacing (when differential pairs are present) on the test … Read more
1. PCB Surface Treatment The surface treatment processes for PCBs include: anti-oxidation, tin spraying, lead-free tin spraying, immersion gold, immersion tin, immersion silver, hard gold plating, full board gold plating, gold fingers, nickel-palladium gold OSP, etc. The main requirements are: low cost, good solderability, strict storage conditions, short time, environmentally friendly processes, good soldering, and … Read more
Can you believe it? A fist-sized mesh bag, when placed in a pool of gold salt solution overnight, can absorb dozens or even hundreds of grams of gold, and the secret lies in the specially made mesh bag. Astonishingly, seven workers stole 8 kilograms of gold over a year, netting over 2 million yuan. This … Read more
With the continuous advancement of technology, the quality control of internal PCB circuit boards has become increasingly strict, leading to a more urgent development and upgrading of PCB surface treatment technologies. This article introduces the commonly used PCB surface treatment technologies in the market today. What Is Surface Treatment? PCB surface treatment technology refers to … Read more
In the production of PCBcircuit boards, the thickness of the gold plating and the thickness of the copper foil represent different process parameters. Below are the definitions and commonly used units for these parameters: 1. Copper Thickness (Copper Thickness) The copper thickness refers to the thickness of the copper layer on the surface of the … Read more