A multilayer PCB will, by definition, have 3 or more conductive copper layers, each separated from the others using either fully cured core material, or partially cured prepreg material. A multilayer PCB is more complex and dense than either single sided or double sided PCBs and can be used for higher technology applications. Using alternate core and prepreg materials, the required multilayer stack is created and copper foils used to form what will become the top and bottom layers of the PCB. The application of heat and pressure in the bonding press fully cures the prepreg material to create the finished multilayer. PTHs take connections from layer to layer in the same manner as a double sided PCB.

Advantages of a multilayer PCB over both single sided and double sided include:

• Increased circuit density and complexity

• More complex designs can be adopted, potentially allowing different single sided and/or double sided designs to be incorporated into one multilayer design

• Reduction in size due to extra routing space from additional layers

• Improved distribution of power, better ground shielding and good return paths for signals

• Segregation of critical design aspects e.g. digital and analogue or high speed/high frequency.

• Better EMC compliance from use of ground or power plane layers

Multilayer PCB appliacation:

Car audio PCB strictly implements the TS16949 international quality management system standard to provide high-reliability PCBs for automotive customers.

1. Professional technical team with rich experience in automotive products

2. Superb process capability to meet the needs of automotive PCB manufacturing

3. The rigorous quality control system will create high-quality and reliable automotive PCB for you, ensuring that the shipment qualification rate is 100%

4. Maintenance of ERP system to ensure the delivery time of customers is the unanimous choice of our customers

Yaheng Circuits produces prototype, mid and high volume single sided PCBs, with a copper thickness ranging from 1 to 20 ounces. Operating temperatures range from 130 C to 230 C, depending on base material type. Single sided boards are available with many surface finishes including Organic Surface Protectant (OSP), Immersion Silver, Immersion Tin, Electroless Nickel Immersion Gold (ENIG) and either leaded or lead-free Hot Air Solder Level (HASL).

Yaheng Circuits is not only trying to give customers a good product but also pay attention to offering a complete and safe package. And here we prepare some personalized services for all the orders.

Common packaging:
PCB: Vacuum packaging with carton box
PCBA: ESD packaging with carton box

Shipping:
1.Confirming your shipping address is correct before delivery
2.Orders processed timely after the payment verification
3.Professional package. No worry about goods breakage.
4.Service transit time is upon different carrier, may vary particularly during holiday.