1: plug hole
Standard: The via hole must be plugged; white light is not allowed (green light is allowed), and the ring is processed according to the customer’s document. If the ring is covered, part of the hole is allowed to turn yellow, but the ring is not accepted copper.
Project documentation requirements
2: cover plug hole
Standard: The wire hole must be covered and plugged; the white light is not allowed (green light is allowed), and the hole is not allowed to yellow.
Project documentation requirements
3: coverage
Standard: The via hole must be covered, the normal silk screen solder mask, no special plug hole treatment; partial holes are allowed
Plug, part of the hole is not plugged, you must accept the hole yellow, but do not receive the copper ring exposed.
Engineering document requirements: Normal solder mask film
4: Coverage is not congested
Standard: The via hole must be covered, the normal silk screen solder mask, no special plug hole treatment; partial holes are allowed
Plug, part of the hole is not plugged, you must accept the hole yellow, but do not receive the copper ring exposed.
Engineering document requirements: Normal solder mask film
5: Covering pads do not cover holes
Standard: The via holes must be covered, and the entire entire board should be screen-printed without special plugging treatment. Part of the holes are allowed to be plugged, and part of the holes are not plugged. The exposed copper of the ring ring should be ± 2mil after opening the window according to customer documents.
Engineering document requirements: Normal solder mask film
6: No coverage
Standard: All through holes are treated as window openings; oil and plug holes are allowed in some through holes, but holes are not allowed
There is ink on the ring.
Engineering document requirements: Normal solder mask film
7: Partial coverage
Standard: The pointing area must be covered with wire holes. Normal silk screen solder mask, no special plugging treatment;
It is possible that part of the vias in this area are plugged, and some are not plugged. You must accept the yellowing of the orifice, but not
The receiving ring is exposed to copper.
Engineering document requirements: Normal solder mask film
8: Partial plug hole
Standard: The via holes in the pointing area must be treated as plug holes; the via holes in this area are not allowed to pass through white light (green light is allowed), but some of the hole openings must be yellow, but no copper rings are exposed. .
Project documentation requirements
other instructions:
①: All boards that must be plugged must be plugged into the hole
②: If there is a customer that the hole is not allowed to be plugged, the order must be specified in the user’s order, and the project must be a blocking point film; and this item can only be used for holes greater than 0.4mm, and for holes smaller than 0.4mm, this requirement is required. Must review the unconventional process next time.