PCBA科技 - PCBA加工外觀檢查的說明是什麼

有什麼說明 PCBA 加工外觀檢查
PCBA 加工印刷電路板, 也稱為印刷電路板, 印刷電路板, 經常使用英文縮寫 PCBA, 這是一個重要的電子元件, 電子元件支架, 和電子元件電路連接供應商. 因為它是用電子印刷科技製作的, 它被稱為“印刷”電路板. 在印刷電路板出現之前, 電子元件之間的互連依靠導線的直接連接來形成完整的電路.

現在, 電路實驗板只是一種有效的實驗工具, 而印刷電路板已成為電子行業的絕對主導地位. 但大多數人仍然不知道 PCBA 加工外觀檢查說明? 讓我們與的編輯一起瞭解它 PCBA加工.

PCBA加工外觀檢查說明

• Missing parts: The components are not mounted as required in the corresponding position on the PCBA.
空焊：3/4 of the area of the solder joints with no or less solder on the component feet (SMD components are less than 1/2 of the width of the component).
-連天：由於操作异常, 最初未連接的兩個點用3角網連接.
-錯誤部件：安裝在 PCBA do not match those shown on the BOM
• Welding: The component pins are not well tinned, and effective welding cannot be guaranteed (including false welding)
• Cold welding: The surface of the solder joint is gray without good wetting.
相反：安裝組件後, the polarity is opposite to that specified in the document
• Tombstone: One end of the patch component is lifted away from the pad to form a tombstone
• Back: The front of the module (the silk-screened side) is facing down, but the welding is normal
• Open circuit: the component pin is disconnected or the circuit on the PCBA board is disconnected
• Tombstone: One end of the patch component is lifted away from the pad to form a tombstone
• Back: The front of the module (the silk-screened side) is facing down, but the welding is normal
• Open circuit: the component pin is disconnected or the circuit on the PCBA board is disconnected
• Lifting: The copper foil or pad of the circuit is lifted from the PCBA surface and exceeds the specification
• Multiple pieces: The file indicates the location of no components, 在相應的 PCBA board
• Tin cracking: usually after the solder joint is subjected to external force, 焊點和元件引脚分開, 影響焊接效果或存在隱患. 我們的工廠位於中國. 幾十年來, Shenzhen has been known as the world's electronics R&D and manufacturing center. 我們的工廠和網站是經中國政府準予的, 囙此，您可以跳過中間商，放心地在我們的網站上購買產品. 因為我們是直接工廠, 這就是為什麼我們的老客戶百分之百繼續在iPCB. 您可以從我們這裡訂購1塊PCB. 我們不會強迫你買那些你真的不需要省錢的東西.
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