Sliton Double Layer Ceramic Circuit Board - China

The double-layer ceramic circuit board refers to those with copper on both sides and metallized holes.

That is to say, there is copper on both sides and there is also copper in the holes.

As to the ceramic circuit board, copper in the holes is particularly important.

Because the earliest and hardest difficulty is to have the copper in the hole.

How to make the copper on the wall without copper is the most important standard to distinguish between the two sides and one side.

However, the false double panel is only copper on both sides without any copper in the hole, so called as no copper in the hole.

The ceramic circuit board with holes on both sides is called false double layer panel, which seems to be a layer double panel and there's a real difference between the real and fake! The wiring is on both sides of the double layer ceramic circuit board, while the appropriate circuit connection between the two sides is a must.

The "bridge" between the circuits is called a pilot hole, which is a small hole filled with or coated with metal on PCB and can be connected to the wiring on both sides.

Because the area of the double panel is twice as large as that of the single panel, the double panel solves the difficulty of wiring interleaving in the single panel (able to reach the other side through the pilot hole) and is more applicable to complex circuits than single-sided board.

Advantages: more convenient and concise wiring, less wiring labor intensity and the shorter line length (compared with a single board)

The use of automatic wiring devices to design ceramic board is appealing.

In most cases, automatic cabling doesn’t bring any trouble to pure digitalized circuits (especially with low frequency signal and low density).

However, some problems may exist, even some severe circuit performance problems, when the automatic wiring tools are used to wire the analog, mixed signal or high-speed circuits.

Many aspects concerning the wiring need to be taken into account.

The grounding mode is a big concern.

Supposing that the grounding path starts from the upper layer and the grounding of each device is connected to the ground wire via the pull line on that layer.

As to each device in the lower layer, the ground loop is formed by connecting the hole on the right side of the circuit board with the upper layer.

When checking the wiring, the user will find the instant red flag indicating the existence of multiple ground loops.

In addition, the ground circuit of the lower layer is located at a horizontal level and the effects of digital switching δi/δt on analog circuits can be reduced.

It should be noted that the design of ground plane on two double-decked at the bottom of the circuit board allows engineers to find the wiring quickly when they are removing the troubles, as well as is displayed on the demonstration and evaluation board of device manufacturers.

However, the more typical approach is to lay the ground plane on the top layer of the circuit board to reduce electromagnetic interference.

The Design and Wiring Code of Double Ceramic Circuit Board

The ground wire of the double layer ceramic circuit board is designed to form a grid frame in which more parallel ground wires are put on one side of the ceramic board and vertical ground wires on the other side of the board, and then connected by the metallized holes at their junction (less resistance of holes)。

Considering that each IC chip should be equipped with ground wire (every 1-115 cm, a ground wire is placed), the densely-placed ground wires make the area of signal loop smaller and help reduce radiation.

The design of the ground network should be carried out before the wiring of signal lines.

Otherwise, it could be difficult to be realized.

The Wiring Code of Double Layer Ceramic Circuit Board Signal Wires:

After the determination of the reasonable layout of the components on the double-layer ceramic circuit board, then the power cord of the ground network board ought to be designed.

The following is to wire the important wires –high-sensitivity wires, high-frequency wires, and then the common wires --low-frequency wires.

It is crucial to have an independent power supply and ground wire loop with quite short leads.

Therefore, sometimes a ground wire is placed adjacent to the signal wire to make it the minimal circuit.

Company Contact:

• Posted By: Folysky Technology (Wuhan) Co., Ltd

• Phone: 13387504731

• Address: Wu Da Yuan Road, Wuhan, Hubei, China, Wuhan , Hubei , China

• Email:

• Website: http://www.folysky.com

• Business Description: Our company's main products are ceramic substrate circuit boards, such as alumina ceramic substrate, aluminum nitride ceramicnitride substrate, zirconia ceramic substrate, glass, quartz and so on, using Laser Activation Metallization Technology(LAM).