【正文】 ll of the packaging. Some of the signs to look for are:在說明如何檢查采購回來的電子元件為仿冒元件之前，我們先了解如何目檢電子元件的封裝情況。以下為需要目檢的項目：167。 Misspellings on the manufacturers labels 檢查廠商標(biāo)簽上是否出現(xiàn)拼寫錯誤167。 Verification that the date code on the label match dates codes on the parts 驗(yàn)證標(biāo)簽上的生產(chǎn)日期代碼是否與元件本體上的生產(chǎn)日期代碼一致167。 Date codes that are not possible. ex. 0657 檢查是否出現(xiàn)不可能的生產(chǎn)日期代碼，例如，0657167。 Date codes that are in the future 檢查生產(chǎn)日期代碼是否是將來的日期167。 If parts are moisture sensitive they require a dry pack and a Humidity indicator card. Often the counterfeiters forget some piece of the moisture sensitive parts requirements. Part specific requirements can usually be found on the datasheet. 如果元件屬于潮濕敏感性器件，包裝時往往需要干燥混合料及濕度指示卡，而電子元件仿冒者往往會忽略了關(guān)于濕度敏感型元件的某些條款要求。若是正宗的電子元件，通常在數(shù)據(jù)資料表上都會找到元件的具體條款要求。Examination of the Indents 模腔檢查Most plastic integrated circuits have cavities purposefully made during the mold process. Some of them are pin one or other designations for use in part placement, but others are just part of the plastic mold process. Mold cavities should be clean, according to the manufacturers we have spoken to. Examining these indents is our number one way of detecting counterfeit ponents. The counterfeiters have a very difficult time keeping the indents clean and consistent during their refinishing process. The pictures to follow are examples of what we have received in our warehouse and a small explanation of our observation follows. 在塑模過程中，大多數(shù)的塑料封裝IC集成電路都會做上模腔標(biāo)記。其中，部分為極性標(biāo)記，但是，其它的模腔則是在塑膜過程中產(chǎn)生的，屬于塑模過程的一部分。從那些與我們洽談過的廠商那里得知，非仿冒封裝IC芯片的模腔應(yīng)該是干凈的。因此，檢查模腔就成為檢測仿冒電子元件的首要方法。在重新收尾過程中，電子元件仿冒者很難做到保持模腔一直干凈且一致。以下圖片為我們從供應(yīng)商那里收到的封裝IC芯片，旁邊的文字則是我們就檢測結(jié)果所做出的相應(yīng)解釋。These two parts were received in the same lot and have identical part number markings. These are the same ends next to each other and you can see that one has 3 indents and the other has just 2. The shape and size of the indents are also different. One is a rounded cavity and the others are all flattened. 左圖為我們收到的同一批號的兩個封裝IC芯片。這兩個IC芯片的型號標(biāo)記一樣，且兩個端口也相鄰，但是從圖片中我們可以看出，其中的一個IC芯片有3個模腔，而另外一個就只有2個模腔。而且，模腔的形狀及尺寸也不一樣。其中一個模腔是圓弧形的，而其它的幾個模腔都是平的。Again you can see differences in the indents. The indent to the lower left looks similar, but the middle right indent is not apparent on the bottom part. This seems to occur because the counterfeiters sand down the parts to remove the old markings and then they resurface it with a process called “blacktopping”, which often fills shallow cavities. 從右圖中也可以看出模腔的不同之處。右圖的兩個封裝IC芯片中，左下方的兩個模腔看起來很相似，但是下方那個IC芯片，偏右邊的模腔根本就不明顯。這并不會讓人感到驚訝，因?yàn)榉旅罢邔C芯片表面進(jìn)行砂磨，以除去表面上的舊標(biāo)記，而后在砂磨過的表面上涂敷上一層所謂的“瀝青”涂料，形成了淺模腔。Here is a close up of an indent that has been filled in with the “blacktopping” material. These indents are never partially made during the manufacturing process. They are uniform in depth throughout the circle. This particular one is filled to the edge on one side. 左圖為已用“瀝青”涂敷過的模腔的特寫鏡頭。在生產(chǎn)過程中，不可能出現(xiàn)模腔內(nèi)部厚度不均勻現(xiàn)象。而左圖的這個模腔的一邊緣已被“瀝青”填平，造成模腔內(nèi)部厚度不均勻。The indents are always clean and uniform from the manufacturer. This indent has been filled in with the materials used to cover up the old surface.據(jù)供應(yīng)商的觀點(diǎn)，模腔通常都會很干凈且厚度一致，但是右圖里的這個模腔則是被涂料填充過，目的是要掩蓋住原來的表面涂層。The counterfeiters are slowly figuring out that we are catching their mistakes. We have started to see an attempt to visually add an indent so all of the parts look uniform. From a naked eye this indent looks like a regular indent. With the microscope it is easy to see that they have etched a circle to create the appearance of a normal indent. 仿冒者已逐漸了解到我們在捕捉他們的錯誤。所以他們就企圖在IC芯片表面上增加一個模腔，以使所有的IC芯片看起來都很均勻。如果用肉眼來觀察，左圖里的模腔看起來像是一個規(guī)則的模腔。但是，如果用顯微鏡來觀察，則很容易發(fā)現(xiàn)：原來仿冒者在IC芯片表面蝕刻了一個圓圈，來制造正常模腔的假象。We are assured by the manufacturers that we speak with that they are very strict with their standards when manufacturing parts. Paint in the indents is not where it is intended, therefore it is suspect counterfeit. 相關(guān)廠商向我們保證說，在生產(chǎn)IC芯片時，他們對各方面的要求是相當(dāng)嚴(yán)格的。右圖IC芯片模腔里的漆是不應(yīng)該出現(xiàn)的，但事實(shí)卻是如此，因此我們懷疑它是仿冒IC芯片。This part is from the same lot code as the above part. You can see an additional problem with the differences in indents. One is much larger and another is non existent. If there is no “smoking gun” we are looking for more than one clue to make our final determination that the parts are counterfeits. In this case we have two fairly obvious anomalies which make our determination clear. 左圖的IC芯片和上圖IC芯片有著相同的批號代碼。但是，我們可以看出模腔的另一個問題。其中，一個模腔比上圖里的大，而另一個模腔卻不存在。如果只是出現(xiàn)前面所提兩者中的任何一個證據(jù)，“一個模腔較大”或“一個模腔不存在”，那我們就得搜集另外一條線索來斷定該IC芯片為仿冒品，但是左圖里的IC芯片卻同時出現(xiàn)了這兩個不同之處，因此，我們可以大膽斷定該IC芯片為仿冒品。These 3 parts are all marked identically on the top. The indents of these 3 have pletely different markings. Not only are they different, but they do not follow any pattern. It is not unmon on legitimate parts to see similar patterns that are not identical. For example, it can be a legitimate part if you had product, that like the first one had 2 letters in the indents, but they were different letters. It could have “”BP” on another part and not be a threat of counterfeit material. It is the same with the 3rd picture. You may have a “T” on another part without cause to worry. 上圖3個IC芯片的正面標(biāo)記都一樣，但是背面的這3個模腔的標(biāo)記都不一樣。不僅標(biāo)記不一樣，而且沒有遵循一定的樣式。其實(shí)，真正IC芯片背面的模腔標(biāo)記圖案也不一樣，但是這些標(biāo)記圖案都會遵循某個特定的樣式。例如，像上面左起第一張圖片里的那樣，如果是兩個不同字母的標(biāo)記圖案，那就可以被認(rèn)為是真正的IC芯片。如上面第二張圖片所示，如果模腔的標(biāo)記圖案是“BP”，則就不會被懷疑為仿冒IC芯片。第三張圖片也一樣，如果模腔的標(biāo)記為“T”，就不用擔(dān)心會被懷疑為仿冒品。Countries of Origin原產(chǎn)地Most parts, which are large enough to write a country of origin, display where it was manufactured somewhere on the part. It is monly placed in the indents, but it can be written anywhere on the part. Smaller parts often have codes within the lot codes for country of origin information, which makes it difficult to use as a deciding factor. We have done investigations with the ponent manufacturers and all of them we have spoken to say that a part with the same lot code as another cannot be manufactured in different countries. See the pictures to follow for examples. 大多數(shù)的IC芯片都有足夠的空間來標(biāo)注上原產(chǎn)地，以表明該芯片產(chǎn)于何地。原產(chǎn)地標(biāo)志一般標(biāo)在模腔內(nèi)，但是也可以標(biāo)在IC芯片表面上的其它地方。若是較小的芯片，一般來說，批號代碼內(nèi)就包