Distress!! The way to distinguish the new and the original of the optocoupler electron with its band

The simplest thing to see is whether the quality of the packaging and the appearance of the printed handwriting are clear and standardized, and the quality of the original documents bought from the largest merchants is guaranteed, I hope it will help you.

It seems that NS was acquired by TI, and I asked TI's customer service staff before how to identify the authenticity of their devices, which is to check the source of goods. I guess you can only use this method in your case, because everything other than IC can be counterfeited, right?

In general, many sellers will have some new and original goods that cannot be sold, and this situation is because the large factories set the year, and it is generally difficult to send them to large customers if they can't sell out! So it becomes a bulk cargo of various years!

That is, if you buy 100 of them, there may be some of them produced in various years ago! This is the real bulk new cargo!

Original goods: produced by the original factory, divided into imported original and domestic original.

The electronic components and ICs of the hard city are all original.

The original goods are brand new, unused, the original factory packaging, bulk new goods are smuggled over, including the old goods that have been used from the old machine, mixed together to sell, usually 99% of the original can be used, and only 50%-70% of the bulk new goods can be used.

I am making electronic components, such as the inductance of TDK, the new is to remove the goods that have been used before and then tape them up from the new, or the TDK goods are old, there is basically no difference between them, because after they are removed, they have been tested and then taped, and the total amount is actually more than the original.

Anyway, the bulk new goods are to put it bluntly, they are patchwork, they are removed from some old machines, and they are also called refurbished goods, and they are reprocessed so that ordinary people can't see that the function may only be half of the original.

2. Bulk new goods: The word bulk new is mainly used in the aspect of IC chips, and the main meanings are:

1) This product is not produced by the original factory, it may be produced by other manufacturers, but it is branded as the original factory, that is, fake, ** business calls it scattered new, or original goods to Mengren!

2) The original production, but it is some unqualified materials. The original factory will reduce the price and dispose of it through other channels. After the seller comes in, it is called a scattered new!

3) Produced by the original factory, used, polished, tinned, and wiped cool feet after a series of treatments, the outside is good, take it out, also called scattered new, but actually refurbished!

IC** Provides:

What do both electronic components and electronic components mean? 1.Electronic components are the parts used in electrical accessories.

For example, transistors, transformers, capacitors, thyristors, etcElectronic components are the original parts of electrical accessories. For example, transistors, transformers, capacitors, thyristors, etc.

It is the same meaning, and it is a general term for electronic parts. For example, resistors are electronic components (electronic components).

Electronic components: The components of machines and instruments, which themselves are often composed of several parts and can be common in similar products.

Electronic Original: Refers to a single part.

The first one is correct, the second one is wrong. Electronic components are: resistors, capacitors, and so on.

Taping is a process of production, but the secondary taping is processed by itself, and the tide is called bulk new goods!

IC taping **Preferred, you can contact if you need it.

The most important thing in the packaging of these sensitive components is to pay attention to anti-static, using anti-static packaging as the inner package, which can protect your electronic components well, anti-static packaging generally includes shielding bags, aluminum foil bags, grid bags, etc.

The definition of bulk new cargo is that it is not the original packaging of the goods, but the products that have not undergone any processing after the chip itself has been processed after the original factory has come out, but the original packaging bag of the chip has been broken during transportation, etc., making it impossible to prove that the goods are original goods.

This kind of goods is generally said to be brand new and original, because the chip will not have quality problems, and the first chamber of commerce will re-tape and package these goods.

The above is strictly bulk new cargo.

The real bulk new goods on the market are not the kind mentioned above, but the products that have been processed and processed by the chips in the original factory (such as Shantou, Guangdong, etc.), one is divided into the original word and the other is refurbished.

First of all, you have to make it clear that both the original and refurbished goods are second-hand and have been used.

The typing and stitches on the original word original foot chip are all out of the original factory, which has not been replaced, and is generally processed very well after coming down from the machine, the word is not worn, and the foot is not damaged, and it only needs to be used again after simple treatment (tin removal, correction of foot position, etc.).

Refurbishment means that the typing on the chip is re-typed, and the feet may also be re-typed.

Generally speaking, the quality of the original goods is better than that of the refurbished.

Sometimes, in order to make profits, some ** businessmen will polish the words on the surface of the chips with similar functions and the same packaging, and reprint the words of the same model as a model**.

This model is either a little more expensive or out of stock, and the feet of the chip are re-connected, so the quality of this processing is very seriously damaged.

1: The dismantling process is not done well, resulting in the chip pins breaking.

Two: the goods are too old, and they are reprocessed for the sake of beauty.

This is the bulk of electronic components of the new goods, the source of the general bulk new goods are Shantou, remind you, if you want to buy the original ** goods are recommended not to buy in Shantou.

Although when you ask, he will swear that it is original.

Compared with the marking on the ic, many manufacturers have a number behind it. For example, 1123 marks the 23rd week of 2011, of course, there are many manufacturers who do not write it so clearly, and ask the letter on it to ask the fae. In a word, first look at the datasheet, and ask fae without explanation!

Yuanbao, I'm an ant!!