At the beginning of its establishment, Shenzhen ideas PCB technology Ltd mainly focused on the PCB model. After listing, the company actively expanded its business lines, and now it has formed three main businesses, namely PCB, semiconductor, and military products. In the first three quarters of 2018, the company’s operating revenue was about 2.604 billion yuan, with a year-on-year increase of 5.10%; the net profit attributable to the parent company was about 176 million yuan, with a year-on-year increase of 11.04%. The gross profit rate of the company in the first three quarters of 2018 was 29.96%, which was basically flat on a year-on-year basis; the net interest rate was 7.64%, with a year-on-year increase of 1.80pct, mainly due to the decrease in the amount of assets impairment of the company.
Industry analysis: the market space is broad, and domestic substitution is at the right time
It is predicted that the global PCB output value will reach 61 billion US dollars in 2018, with a year-on-year growth of 3.8%. China PCB prototype has a broad market space. The mainland has advantages in cost, skilled workers, industrial support, and other aspects, which makes the global PCB industry continue to transfer to the mainland. IC carrier board is mainly used in the packaging of semiconductor chips, which has the characteristics of high technical difficulty. With the developed semiconductor industry, Japanese, Korean and Taiwan manufacturers currently occupy a monopoly position in the field of IC board. Domestic manufacturers need to break through the IC carrier industry.
Growth power: 5g drives PCB demand and IC board profitability improves
In the downstream application fields of the company, the revenue from communication accounts for 36%, which is the application field with the highest proportion. The company’s communication customers include Huawei, ZTE, Fiberhome, and other top equipment manufacturers, and have stable cooperation with customers for many years. They have a deep customer relationship in the field of communication, and are expected to benefit from the sample demand brought by 5g R & D. Six years ago, the company entered the field of IC carrier board, but due to the difficulty, it brought a great drag on the overall performance of the company. After nearly six years of accumulation, the company’s IC board project is constantly improving, and the profitability has improved significantly.
As an electronic engineer, it is necessary to learn PCB drawing software. At present, the two popular PCB drawing software is 1-Altium Designer (we often say AD); 2-pads. You can choose one of them to learn, because the operation of similar software is almost the same, learning another will naturally. PS: if you see someone using Protel in your work, it’s basically a god level.
I recommend that you start learning from Altium Designer (AD), because this software is easy to use, powerful, and widely used. The most important thing is that there are a lot of online learning materials.
You can complete your own China PCB prototype through the following steps:
1 – introductory learning
There are a lot of learning materials for Altium designer. I recommend Mr. Guo Tianxiang’s ad teaching video. The video content is very comprehensive. Most people start with Mr. Guo’s teaching video. There are 13 videos in total. In addition, teacher Guo Tianxiang’s “ten days to teach you how to learn single-chip microcomputer” is also very classic, you can download and learn if necessary;
2 – design schematic diagram
According to the project needs to design the schematic diagram, everyone’s China PCB prototype project can start from the minimum system of stm8s003 single-chip microcomputer
After the schematic diagram is designed, we can start to design the PCB. Before designing the PCB, we need to confirm the package and PCB structure of each component. After confirming the correctness, we can complete the PCB according to the electrical connection of each component. The following figure shows the completed PCB (2D drawing and 3D drawing);
4 – proofing test
After completing the PCB design, we can send the design files to the manufacturer for samples. We can directly find the manufacturer’s proofing on Taobao. The PCB can come back in about a week, and the next step is the debugging function of welding components.