| 电子采购的通用公式 |
| 品牌 |
| 类别 |
| 包 |
| 包装形式 |
| 简单的命名规则 |
| 批处理代码 |
- 原创内容，请勿转载。
你有没有经历过买错材料、记住包装错误、售后供应商拒绝退货的尴尬？您是否经常犯错误
由于电子材料？今天我们分享一些选购电子资料时需要掌握的电子知识，希望对大家有所帮助，
电子采购的通用公式
对于新手电子元件购买者来说，最快的方法是使用这个通用的购买公式，根据这个公式，你基本上可以开始你的工作。
首先是品牌，然后是模型包装，然后是批次，即产品的年份，以及组件的最小包装。可以开具发票吗？付款？是
产品质量是原装的还是正品的？
至于电子物料采购，要选购合适的电子元器件，基本上都是基于上述通用公式，所以我们来一一了解一下。如果您记不清了
一个视频，我们将在视频中提供详细的表格。
品牌
首先是品牌，你至少应该知道你购买的材料品牌是欧美、日韩、台湾还是中国，对于电子材料的购买者来说就是
不可能逃脱一张BOM表中的10-20个品牌的材料，可以说大多数主流品牌的电子元器件都是缺一不可的。
The following table is the common electronic components brands, if you need friends can save screenshots.
(tu)
Category
There are many kinds of electronic devices. If you encounter a non-electronic professional to engage in electronic material procurement, although it is impossible to deeply understand the working
principle of each type of electronic device, at least the following types are known. Common types of components are as follows:
1、IC：IC is an integrated circuit. Basically, IC has MCU, single chip microcomputer, FPGA, memory, various simulators, amplifiers, analog-to-digital converters and power ICs. Most of the factory ICs
are used in these types.
2、Diode：There are many kinds of diodes, such as rectifier diode, voltage regulator diode, Schottky and so on. These types only need to be roughly understood. For purchasers, the most important
thing is to check the model and packaging clearly.
There are many kinds of diodes, which can be divided into rectifier diode, voltage regulator diode, Schottky diode, switching diode, fast recovery diode, light-emitting diode (LED), photoelectric
diode, varicap diode, TVS diode and other main types according to function, material and structure.
3、Transistor：TheTransistor is mainly divided into two basic types, NPN type and PNP type, and then there are field effect transistors and bipolar transistors,The next category is resistance and
capacitance. Here, we also provide a universal formula for friends to purchase. According to this formula, you will not buy the wrong material.
4、Resistive、capacitor：
Resistance：Resistance is brand resistance value packaging accuracy here, one parameter can not be missing, less may purchase the wrong material.
Capacitance：Capacitance is also a parameter that cannot be omitted.
Package
For a buyer who is responsible for purchasing hundreds of categories at a time, it is very difficult to remember the packaging of each electronic component.
Here we provide a package table of an electronic component, you can take a screenshot and save it, in the usual purchasing work can check your own package.
The main points to pay attention to here are the conventional foot, the secret foot, the conventional body, the ultra-thin body, the medium body, the wide body, and the narrow body between
encapsulation and encapsulation. The literal forms of these packages are similar, but they cannot be used interchangeably, which is very important.
Packaging form
The other is the packaging form,Common electronic component packaging has disc tape loading, tray loading, tube loading and so on. The main thing is to see what your component is
encapsulated, different packaging models are different.
Simple naming rules
Many purchasing components will be purchased incorrectly, because of the lack of understanding of the naming rules. The naming rules of different brands are different. Here, in order to
facilitate and save time, we provide a universal naming rules table, which is used for most electronic components.
The chip model is usually composed of three modules, the brand series and one parameter, as well as temperature, speed, and packaging information. Here, the lead-free packaging form is
collectively referred to as packaging information, and the three modules form a formula that can parse most chip names.
Batch code
The component batch code is very simple,Basically, the first two are its years, and the last two are its production cycle.For example, if the year is 2129, then it is the 29th week of 2021.twenty-nine
divided by four (four weeks in a month) is the material for July.
