-Table of Contents
0:00 Opening
0:16 Buy in bulk
0:59 Prepare parts list in advance
1:37 Use Online/Offline depending on situation
2:38 Consider substitution item
3:22 Advice
3:48 Conclusion
-Introduction
Hardware engineer
9 years experience as a Maker
-SNS
Web : start-electronics.com/
Twitter : / buonoatsushi
#Electronics
-Content
The first point is that the basic principle of electronic components is to buy in bulk.
One of the characteristics of electronic components is that each piece is inexpensive. As you can see on the Akizuki Denshi page, for example, the range is usually from 10 yen to several hundred yen in most cases.
On the other hand, there are shipping costs when buying online, and transportation costs and time when buying in a physical store. For example, in terms of shipping costs, if you buy one piece at a time, the relative shipping cost will be overwhelmingly higher, since you will have to pay for shipping each time you buy, as described here. The only way to avoid this is to buy in bulk to reduce the shipping cost per piece. Also, each store has a line where shipping is free, so try to buy in bulk to reach that line if possible.
The next point is to prepare your parts list in advance.
As is the case in both online and brick-and-mortar stores, it is easy to get carried away when browsing stores and end up wanting a lot of different parts. However, in my experience, most of the parts I buy that way end up not being used, so focus on the parts you need and buy only those you need. The recommended way to do this is to prepare a list of parts called a BOM in advance. However, since it is for your own use, you do not need a solid BOM, but only the model name, manufacturer name, and quantity should be enough. It is also useful when asking about inventory at a physical store.
The third point is to make a distinction between an online store and a physical store.
It is not that one is better than the other, but just as both Amazon and bookstores have their good points, it is important to take advantage of the features of each and use them differently. Here is a summary of their characteristics. The online case saves time and money, to say the least. Online, you can find a part in 5 seconds if you know the model name, and you don't have to take the train to buy it. And if the total cost of the parts reaches the line where shipping is free, you don't even have to pay for shipping. However, online is not always better, and I still think it is not as good as a physical store in terms of encounters. In a physical store, you may come across parts or modules that you never imagined, and if you are lucky, they may have a sale going on. Also, the staff at the parts store is still very knowledgeable, so you can ask them for help when you have a small question. In summary, we recommend using online when you have a clear idea of the parts you want to buy, and using a physical store when you are stuck for ideas.
The last point is to determine if you can substitute other parts before you buy.
Basically, electronic components are rarely "absolutely essential" and can be substituted with other components in most cases. For example, even if you do not have a capacitor with a capacitance of 10uF, you can use two 4.7uF capacitors in parallel to achieve the same specifications, and if you have one FET or transistor with a higher rated current and voltage, you can use it in a wide range of applications. Before buying parts, consider first whether you can substitute them with parts you have on hand or whether you can combine them to achieve the same thing. Also, even if you do buy, it is sometimes cheaper to disassemble and remove junk or 100 yen store electronics, so consider those options as well.
Негізгі бет Тәжірибелік нұсқаулар және стиль [Know-How] How to buy electronics parts properly
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