Circuit board via processing definition

Security Through Hole PCB PCB Proofing Production Via Handling Definition

1: Plug hole

Standard: The via holes must be handled; white light is not allowed (allowing green light to pass through). The hole ring is handled according to the customer's file. If the ring is covered, some of the via holes are allowed to turn yellow but not receive the ring. copper.

Project Document Requirements: Out of Confucius

2: security through hole PCB circuit board proofing production plug hole

Standard: Over-line holes must be covered, and plug holes must be handled; White light (allowing green light to pass through) must not be allowed, and yellow holes must not be allowed.

Project Document Requirements: Out of Confucius

Through hole PCB board proofing production

3: Security Through Hole PCB PCB Proofing Coverage

Standard: Over-line holes must be covered, normal screen-printed solder resisted, no special plug-hole treatment;

Plug, part of the hole is not plugged, must accept the mouth of the yellow, but does not receive the ring exposed copper.

Project Document Requirements: Normal Solder Mask

4: Security through hole PCB circuit board proofing production

Standard: Over-line holes must be covered, normal screen-printed solder resisted, no special plug-hole treatment;

Plug, part of the hole is not plugged, must accept the mouth of the yellow, but does not receive the ring exposed copper.

Project Document Requirements: Normal Solder Mask

5: Cover pad does not cover the hole

Standard: The wire holes must be covered, the normal whole board should be silk screened, no special plug holes should be handled; some holes must be plugged, some holes should not be plugged, and the hole ring should be exposed to copper ±2mils after opening the window according to the customer's documents.

Project Document Requirements: Normal Solder Mask

6: Do not cover

Standard: All the wire holes are opened for window processing; some oil holes and plug holes are allowed in the holes, but holes are not allowed.

There is ink on the ring.

Project Document Requirements: Normal Solder Mask

7: Partially covered

Standard: The area must be covered with a guideline, normal screen printing and soldering, no special plugging;

Part of the hole in the area of ​​the hole is covered and part of the hole is not plugged. The hole must be yellowed, but not

Receiver ring exposed copper.

Project Document Requirements: Normal Solder Mask

8: Part of the hole

Standard: It is necessary to make a hole in the designated area wire hole; in this area, the via hole is not allowed to transmit white light (allowing green light to pass through), but part of the hole mouth must be yellowed, but the copper ring is not received. .

Project Document Requirements: Out of Confucius

other instructions:

1: All plug plates must be plugged out.

2: If there is a hole in the customer's threading hole, the order must be specified in the user's order. The project must be rejected from the film; and this item can only be used for holes of more than 0.4mm, and holes less than 0.4mm have this requirement. The next non-routine process must be evaluated.