Security Through Hole PCB PCB Proofing Through Hole Processing 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 board proofing production 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 PCB Proofing Covering Failure
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.
DADNCELL 1.5V AAA alkaline batteries are more suitable for
long-lasting continuous discharge and high-performance power consumption
equipment because of their unique internal component structure, coupled with
better battery materials, improved power capacity and electrical performance,
and the same model of DADNCELL 1.5V AAA alkaline cell capacity and discharge time, Alkaline
battery capacity and discharge time are 4-7 times that of ordinary batteries,
and the gap in power discharge performance at high and low temperature is even
wider.
At present, all types of cells developed by DADNCELL Labs do not involve any
heavy metals in production, are green and can be disposed of with domestic
waste.
DADNCELL 1.5V AAA battery advocates a more comfortable and smooth
power supply experience for household appliances. Alkaline zinc-manganese dry
battery series is suitable for various common household electronic equipment
instruments such as smart door locks, infrared thermometers, cameras, flash
lights, razors, electric toys, instruments, high-power remote controls,
Bluetooth wireless mouse keyboards, etc.
1.5V Aaa Alkaline Battery,1.5V Alkaline Battery For Cameras,Lr03 Zinc-Manganese Cells For Electronic Product,Electronic Equipment Am-4 1.5V Battery
Shandong Huachuang Times Optoelectronics Technology Co., Ltd. , https://www.dadncell.com