I need help with some basic questions about drawing PCB packages!

我的眼里只有PCB

I need help with some basic questions about drawing PCB packages! [Copy link]

I have some simple doubts for beginners: 1. What are the standards for selecting components? Voltage resistance, current resistance, ripple? 2. After knowing the component standards, where can I find suitable components? 3. Where can I find the standard packaging data description of the components I have found?

qwqwqw2088

The question is very general and not specific. It depends on what kind of power supply circuit you are designing. The total output of the power supply has requirements for ripple current, so you need to use devices that affect the ripple well, such as low ESR capacitors. The power supply implementation plan is also very important.

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Generally, after determining the components to be used, go to the official website to find the data sheet and carefully read the package data of the components. The data sheet is usually explained at the end of the data sheet.

Lixiaodou_163

The package is easy to find. As long as you can access Google and know the device name, you can download the datasheet.

qwqwqw2088

Lixiaodou_163 posted on 2018-7-10 22:11 It is easy to find packages. As long as you can access Google and know the device name, you can download the datasheet

Conventional and commonly used devices such as 0805, 0603 and other SMD resistors, capacitors, diodes, etc. can be downloaded and borrowed online, or you can draw them yourself. There are many forum download centers, and conventional devices are enough. The following recommendations are https://download.eeworld.com.cn/ ... B%E5%B0%81%E8%A3%85

qwqwqw2088

Other devices, such as single-chip integrated circuit chips, etc., are described in the official website manual. Look carefully at what package it is. Some can be applied. Pay attention to the package type, but it is best to be able to draw and modify the package yourself so that you can use it flexibly.

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