Yesterday, we published the article “Call for Papers on PCBA Design and Manufacturing,” and we welcome everyone to submit their contributions. 1. Why Do PCBs Need Surface Treatment? The core purpose of PCB surface treatment is to: protect copper pads and ensure their solderability.. 1. Prevent pad oxidation: Copper easily oxidizes in air, and the … Read more
Editor’s Note: This article is excerpted from a presentation titled Novel Surface Finish for 5G-mmWave Frequency PCB Technologies: How to Achieve Optimum Signal Integrity. 0 Introduction With the increasing demand for high-frequency electronic devices, the shortcomings of traditional surface treatment processes such as electroless nickel immersion gold (ENIG) on printed circuit boards (PCBs) have become … Read more
After designing the PCB, we send it to the PCB manufacturer for prototyping or mass production. When placing an order with the manufacturer, we include a PCB processing technology specification document, which specifies the type of PCB surface treatment process to be used. Different PCB surface treatment processes can significantly affect the final PCB processing … 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
Metal is applied to exposed pads using an organic coating, known as surface treatment. The surface finish protects copper pads from scratches and oxidation while facilitating soldering in a reflow oven. Although there are various types of surface treatments, ENIG and ENEPIG are two common types. Manufacturers typically use them for ceramicPCBs, flexible boards, and … Read more
This article is an excerpt from a book produced by Zhihu: “Cats, Einstein, and Cryptography: Quantum Communication That I Can Understand” From Julius Caesar to Sherlock Holmes from Nazi leader Hitler to the father of AI, Turing… How did the ultimate code in the field of communication come into being? All of this must start … Read more