Matters needing attention

We can do it, but we have put forward a little larger order to ensure good yield. If your board line is very accurate and smaller than the factory's requirements, you can also consult our customer service staff for quotation.

2, what kind of board to fight the board?

A PCB board, which put a few separate application lines, different boards, that is, puzzle board. Makeup can choose to cut, V moment, slotting, stamp hole etc..

3, how to deliver the puzzle board? Can I have it engraved at V?

Imposition is cut open to your default. If you require V, please contact our customer service staff at the time of placing an order.

What do you mean by "4" and "V"?

Is for the board together, the edge of the line is not completely cut, only in the front and back part of the carved part, and they can be broken by hand. The groove is shaped like V, so it's called V.

5, under what circumstances should choose green over the hole?

One is beautiful, the two is to prevent welding, easy to touch through the hole, resulting in short-circuit. If not selected, tin will fill the hole, and the advantage is that the resistance of the hole becomes smaller and it is not easy to break.

6, what is Shen Jin? Under what circumstances do I need to pay for it?

The purpose of the gold deposition process is to deposit nickel coating on the printed circuit surface with stable color, good brightness, good coating and good weldability. Basically can be divided into four stages: pretreatment (degreasing, micro corrosion, activation, after immersion), sink nickel, sink gold, after treatment (waste gold, water, DI washing, drying). When you need to do the key board, or socket, you may need to sink gold, gold board is not easy to rust, contact resistance is small.

7, under what circumstances do you need lead-free tin spray? Is it good to use lead-free tin spray?

Green, or single, are in need of lead-free spray tin, lead free soldering temperature needs a little higher. For the usual debugging, do not necessarily need lead-free tin.

What is the default copper foil thickness of the 8 and 2 laminates?

35um.

9. Can you thicken copper foil?

Yes, please contact the customer service staff when ordering.