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PCB board is how to handle through holes

2019-10-21 19:23:17 Juding Circuit Technology 297

Through Hole PCB Board Making Through Hole Processing Definition


1: plug hole

     Standard: The hole should be treated with a hole; the white light is not allowed (allows green light), the hole ring is processed according to the customer's file, and if the hole ring is covered, some of the hole opening is allowed to yellow, but the hole is not exposed. copper.

Engineering documentation requirements: out of the hole


2: Through-hole PCB board production cover plug hole

    Standard: The hole should be covered and the hole should be treated; white light is not allowed (allows green light), and the hole is not allowed to yellow.

Engineering documentation requirements: out of the hole


3: Through-hole PCB board production coverage

    Standard: The wire hole must be covered, the normal silk screen soldering resistance, no special plug hole treatment; some holes are allowed to be plugged, some holes are not plugged, the hole must be yellow, but the hole ring is not exposed.

Engineering documentation requirements: normal solder mask film


 4: Through-hole PCB board production coverage is not blocked

    Standard: The wire hole must be covered, the normal silk screen soldering resistance, no special plug hole treatment; some holes are allowed to be plugged, some holes are not plugged, the hole must be yellow, but the hole ring is not exposed.

Engineering documentation requirements: normal solder mask film


 5: The cover pad does not cover the hole

    Standard: The wire hole shall be covered, the whole board shall be screen printed, and no special hole hole treatment shall be made; some holes shall be blocked, some holes shall not be plugged, and the hole ring copper shall be ±2 mil after opening the window according to the customer's documents.

Engineering documentation requirements: normal solder mask film


 6: Do not cover

    Standard: All wire holes are windowed; oil and plug holes are allowed in some of the holes, but ink is not allowed on the ring.

Engineering documentation requirements: normal solder mask film


 7: Partial coverage

    Standard: the pointing area must be covered by the line hole, normal screen printing soldering, no special plug hole treatment; allow the hole in the area to be plugged, some holes are not plugged, must accept the port yellow, but not receive Hole ring exposed copper.

Engineering documentation requirements: normal solder mask film


 8: Partial plug hole

    Standard: The hole in the pointing area must be plugged; the hole in the area is not allowed to pass white light (allowing green light), but it must accept yellowing of part of the hole, but does not receive copper ring. .

Engineering documentation requirements: out of the hole


 other instructions:

    1: All the plates of the hole must be plugged in.


    2: If there is a hole in the customer's wire hole, the order must be specified in the user list. The project must be out of the film; and this item can only be used for holes above 0.4mm. The non-conventional process must be reviewed next time.


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