1. PCB circuit board plug hole
Standard: the hole plug hole must be treated; white light is not allowed (green light is allowed), and the hole ring is processed according to the customer's file. If the hole ring is covered, some holes are allowed to turn yellow, but the hole ring is not exposed copper.
Requirements for engineering documents: export plug film.
2. Security through-hole circuit board proofing and production covering plug holes
Standard: The wire hole must be covered and plugged; white light is not allowed (green light is allowed), and the hole is not allowed to turn yellow. Requirements for engineering documents: export plug film.
Through-hole circuit board proofing production.
3. Security through-hole circuit board proofing production coverage
Standard: The wire hole must be covered, the normal silk screen solder mask, no special plugging treatment; some holes are allowed to be plugged, some holes are not plugged, and yellowing of the hole must be accepted, but copper exposed by the hole ring is not accepted.
Engineering document requirements: normal solder mask film. Double-sided bonding circuit board proofing production
4. The proofing of the security through-hole circuit board is not covered
Standard: The wire hole must be covered, the normal silk screen solder mask, no special plugging treatment; some holes are allowed to be plugged, some holes are not plugged, and yellowing of the hole must be accepted, but copper exposed by the hole ring is not accepted.
Engineering document requirements: normal solder mask film.
5. Covering the pad does not cover the hole
Standard: the wire holes must be covered, normally the whole board is silk-screened, and no special plugging treatment is done; some holes are allowed to be plugged, some holes are not plugged, and the hole ring is exposed to copper ± 2mil after the window is opened according to the customer's file.
Engineering document requirements: normal solder mask film.
6. Not covered
Standard: All wire holes are windowed; oil and plug holes are allowed in some holes, but ink is not allowed on the hole ring. Engineering document requirements: normal solder mask film.
7. Partial coverage
Standard: the designated area must be covered by the wire hole, normal silk screen solder mask, no special plugging treatment; some holes in the area are allowed to be plugged, some holes are not plugged, and yellowing of the hole must be accepted, but not accepted Grommet exposed copper.
Engineering document requirements: normal solder mask film. 8. Partial plug hole
Standard: The holes in the specified area must be treated as plug holes; the plug holes in this area are not allowed to pass through white light (green light is allowed), but it is necessary to accept yellowing of some holes, but do not accept exposed copper on the hole ring .
Requirements for engineering documents: export plug film.
8. Partial plug hole
Standard: the holes in the specified area must be treated as plug holes; white light is not allowed to pass through the plug holes in this area (green light is allowed), but yellowing of some holes must be accepted, but copper exposed by the hole rings must not be accepted. .
Requirements for engineering documents: export plug film. other instructions:
①. For all PCB circuit boards that need plug holes, the project must have a plug hole film.
②. If there is a customer who does not allow plugged holes, the order must be specifically stated in the user form, and the project must be blocked by film; and this item can only be used for holes above 0.4mm, and holes smaller than 0.4mm have this requirement. The non-routine process must be evaluated next time.
