How to choose a suitable custom pcb manufacturer

What is PCB customization?

PCB customization generally refers to the customer to provide PCB BOM and Gerber data lists to the manufacturer, PCB manufacturers according to the data for customer plate processing, customization instructions include: material, quantity, layer number, plate thickness, ink color, process and other specific production requirements.

Specific instructions:

Material: Explain what material is needed to make PCB, commonly used FR-4. There are other types of materials, such as FPC, copper-coated substrate, aluminum substrate, etc.

Quantity: The number of PCB processing and production has a certain impact on the price.

Number of layers: The number of sub-layers on the board represents a certain degree of processing difficulty, which has an impact on the price and needs to be marked.

Plate thickness: The thinner the plate is processed, the more difficult it is to process, and the price will fluctuate.

Ink color: the common ink color is green, custom other colors need to be explained, do not indicate the general default green oil white background.

Surface treatment: spray tin (lead & no lead), sunk tin, sunk silver, sunk gold.

Plug holes are covered with oil, blind holes, aluminum plug holes, ink plug holes, resin plug holes, etc.

What are the benefits of custom PCBS?

With the improvement of modern electronic equipment technology, miniaturization design is used more frequently. Custom PCB boards can be used in integrated circuits while saving space for the most complex devices, so what are the benefits of custom PCB boards?

1.PCB designers can integrate dense lines in a small space.

2. Custom PCB circuit boards can better control the position of each component, better reduce the parasitic characteristics of the circuit.

3. In custom PCB circuit boards should pay attention to quality and can make the durability of the circuit board longer.

4.Can effectively control labor costs and time costs.

5. Functional testing can be done with integrated LED lights.

6.The appearance of custom PCB circuit boards is clean and bright, which can improve customers’ awareness of the product.

7.From a long-term perspective, the cost of custom PCB boards is low.

Customized PCB manufacturing process

The basic process flow of PCB customization mainly includes: inner line → lamination → drilling → hole metallization → outer dry film → outer line → screen printing → surface process → post process.

1. the internal circuit: the main process is open → pretreatment → film → exposure →DES→ punching.

2. lamination: copper foil, prepreg and brown inner circuit board laminated into a multilayer board.

3.Drilling: PCB board between layers to produce through holes, can be connected between layers.

4. hole metallization: the non-conductive part of the hole wall is metallized, which can make the subsequent plating process more convenient.

5.External dry film: using graphics transfer technology to expose the required lines on dry film.

6.External circuit: The purpose is to plate the copper thickness to the thickness required by the customer to complete the circuit shape required by the customer.

7.Screen printing: the protective layer of the outer circuit, used to ensure the insulation, protection and welding of the PCB board.

8. Post-process: according to customer requirements to complete the processing requirements, and test to ensure the quality of test results.

 

How to Choose a Custom PCB Manufacturer

1. Look at the factory qualification

Qualification is an indispensable “brand proof” in the circuit board industry, which is both a roadblock and a stepping stone for the circuit board factory. A good board factory must be more stringent in quality control, so it will also apply for a number of qualifications to enhance the brand image. Procurement must ask what qualifications the board factory has, and whether the product meets PCB quality standards!

2. Look at the raw material supply system

Purchasing should pay attention to Kanban factory raw materials, such as plates, ink, copper balls , etc.

Among them, the board is the most important. The difference between the board determines the performance of the circuit board, the worse the board quality, the cheaper the price. Of course, there are more hidden dangers, so we must carefully check.

3. Look at process technology

It can be said that consumer electronics products and military products are completely two levels of technology, and the process is an important standard for choosing a panel factory. We can refer to the process of a board factory from the number of sub-layers of the board, special process capabilities, such as copper thickness, line width aperture, impedance level, size , etc., the more reliable the board factory with complex process capabilities.

4.Depending on the delivery time price

Purchasing should pay special attention to is that only the self-owned factory dare to promise delivery and guarantee on-time delivery, because your order will be tracked by the person in charge of the self-owned factory.

LST PCB manufacturing capability

Efficient, flexible, intelligent professional PCB proofing and PCB manufacturing.

1. Advanced product technology

High level backplane, HDI board, semiconductor test board, high frequency board, high TG board, halogen-free board, flexible and rigid flexible board and other high-tech products.

2.40 PCB layers, 2mil line width spacing

It can stably produce 40 layers of PCB and 20 layers of rigid and flexible bonding board, the thickness of the backboard can exceed 7mm (0.276″), the thickness to diameter ratio can reach 30:1, the high precision can produce 2mil line width spacing, master the impedance control technology, and realize your high-speed signal transmission design.

3. Allegro service

Double-sided express delivery within 24 hours of production; Samples within ten layers should be completed within 2-6 days; Samples above ten layers can be delivered within 6-10 days.

Reduce the new product development cycle, occupy the market standby, tailored for research and development.