How to ensure that the PCB factory can produce according to the samples that have passed the proofin

I don't think this problem will arise.

Qualified enterprises can be issued to customers according to the proofing products.

Moreover, the company that accepts the mass-produced product will use its sample delivery for safety certification before.

Mass production will be carried out only after it has been confirmed.

Sampling tests are also carried out during mass production.

If a problem is found in the market, then the responsibility is great.

In the end, it was found that it was because of the inconsistency between the thing that sent the sample and the thing that was actually provided.

If the compensation is paid alone, the general company can go bankrupt.

I also saw above that it says "inferior electronic components".

These should be added to the PCB board, right?

It has nothing to do with PCB manufacturers.

As for cost down, it is up to the manufacturer to decide the finished product.

They will do safety certification at the same time as changing materials

Only after the refueling has passed the safety certification can the refueling decision be made in the production line.

This is commonly known as the second source

So you just have to take care of the samples.

The mass-produced PCB board must be the same as the sample (this is also the most basic principle of a qualified company, if you can't even do this, you just suggest that they close the door).

Otherwise, their business will not survive for a year.

When proofing, the process, equipment, machine, raw materials, process, and person in charge of the PCB sample are written clearly, and the PCB company will be reviewed regularly and irregularly, and the raw materials certified by you will be specified, otherwise the whole material will be returned, and the contract will be signed, and the compensation will be doubled.

Plate thickness: This is a commonly used specification, if there is no special requirement, the thickness of the plate is selected.

Copper foil thickness: ,, this is a common specification, if the power is not particularly large board can not be selected, manufacturers will generally use the board to do, if the power is about 100w power board will be used above.

Solder mask color: green, black, red, white This is commonly used, there is no requirement to use green, if it is used in your own experiment, you should use green, because this color of the board circuit can be seen most clearly.

Pad treatment: rosin, anti-oxidation, tin spray (divided into leaded and lead-free), generally the latter two can be used, and the storage time of sprayed tin will be longer.

The color of silk screen: white, black is a commonly used color, if it is green oil, the general choice of white, this is mainly to see clearly, choose the color contrast of the board on the large, if it is white solder-resistant, you should choose black.

Plate selection: HB, 94V-0, FR-4 This is commonly used, HB is rarely used, it is a non-fireproof board, generally 94V-0 is used for single panels, and FR-4 is used for double panels.

If proofing is required, another process requirement must be attached: use a word document, and directly note it in the PCB file. The requirements that need to be specified are:

1. Plate 2, plate thickness 3, circuit board copper thickness 4, solder mask color 5, special layer description and production requirements (such as which layer your Solder Marsk is placed on, gold plating or tin spraying, or oxidation) 6, dimensional tolerance 7, sample quantity 8, panel paneling method, etc.

Yes, those requirements have to be explained, such as what kind of board is needed, what is the effect, as long as you want to talk to the manufacturer, the simplest requirements need to have, plate thickness, process, quantity, solder mask and text color, and others can be done according to your requirements combined with the actual production capacity of the factory.

Pre-production samples: first provide PCB electronic drawings to the manufacturer, indicating the thickness of the board, single and double panels, and surface treatment process (lead spraying tin, lead-free tin spraying, gold, gold plating, OSP is anti-oxidation); Solder mask color, character color, test requirements, shipping panels and other requirements, it is best to find a company to consult.

It's the first time to proof, search for many states online, and there are instructions on the official website.

1.It can judge the strength level of the circuit board manufacturer's production.

Effective PCB proofing before production can also clearly understand the strength of circuit board manufacturers, especially the manufacturers that have not cooperated with the two sides before, can determine the strength level of circuit board manufacturers in production through proofing, only the ability to meet the standard requirements of circuit board manufacturers in processing technology, in order to better meet the requirements of long-term cooperation and high-quality processing and production of PCB boards.

2.It can reduce the defect rate of PCB circuit board production in large quantities, usually PCB board processing and production is large, in order to ensure that mass production is smooth without quality problems and reduce the defect rate, it is very necessary to carry out circuit board proofing processing before production. After all, the processing of PCB board needs to go through complicated processing processes, and there can be no errors in each process or processing link, and there will be professional and technical personnel to effectively test the samples after successful proofing, and determine that there is no problem before mass production can be carried out after passing various professional tests.

3.It can lay the foundation for future batch processing.

PCB proofing is also to understand the performance and functional response of new products in advance, through proofing can effectively lay a good foundation for future mass production, calculate the corresponding material cost can also optimize the deficiencies in advance, which need to be effectively processed in the proofing process, so as to reduce the occurrence of various unexpected problems during mass production.

Generally make circuit boards, you need to design the schematic diagram first, design the PCB file, with the PCB file is equivalent to the drawing of the circuit board, with the PCB file is only theoretically a circuit board that can be used normally, sometimes due to the designer's carelessness or lack of practical experience, there may be some problems, so you need to first PCB proofing 5 samples, testing, if there is no problem with the test, mass production will be considered!

A PCB project needs to involve a lot of things, and if a product has a problem in a certain link, it is easy to affect the product development progressThe designed PCB goes to the model factory for proofing, and several boards are tested, and if the test is passed, it can be mass-produced.

First of all, it is necessary to clarify their own dosage, from their own use needs to find the corresponding circuit board proofing factory, there are many types of board factories on the market, there are large quantities, military boards, soft boards, small and medium-sized batches, proofing, and only simple boards. There is no best, only the most suitable.

Secondly, when choosing a regular and professional circuit board manufacturer, you must look at their production capacity. To review the strength of a circuit board manufacturer, look at several aspects.

The first is to see if he can independently complete the process from cutting to surface treatment to later electronic testing, slot milling and so on. The most critical ones are mainly in light imaging, etching, solder masking, surface treatment, and drilling. When it comes to process capacity, small domestic factories generally do 2 layers and 4 layers, and the high point does 8 layers of PCB, while powerful manufacturers can do standard 12 layers or even 26 layers of higher circuit boards.

The number of layers refers to the number of wiring layers of a PCB, the PCB board is made of multiple single-layer boards connected and pressed by PP sheets, which cannot be done without certain technology, and the difficulty is the interference between the PCB lines, the quality of pressing, the accuracy of the machine, etc.) and then the parameters provided by the manufacturer, such as process capabilities, line width and line spacing, copper thickness, solder mask thickness, etc. It is also very important for the circuit board factory to carry out strict quality inspection of products, and the board factory ensures that the appearance of each product is intact and the performance is complete before entering the market.

Then, about after-sales service, it is also very critical to choose a regular and professional circuit board manufacturer, that is, after the PCB demand manufacturer or company has purchased the product, the product may not have a problem when it leaves the factory, but in specific use, there may be problems with the PCB board for some reasons, and when the product has a problem, the circuit board proofing factory will provide a series of after-sales service to ensure the normal use of the product to ensure the interests of consumers.

Finally, on the first aspect, because the regular professional circuit board manufacturers because of their different scale, the scope of production capacity, etc., so they give the first is also different, if it is after the selection and comparison, the formal professional circuit board manufacturers that have been inspected, the factory has its own reasonable system, do not have to worry about the problem of chaos, choose the acceptable reasonable and reasonable circuit board manufacturers to cooperate, do not choose informal professional circuit board manufacturers because of greed, so that there will be a lot of follow-up problems, The above are the factors to be considered when choosing a circuit board manufacturer.

In terms of quality, you can make a letter of commitment, and the expedited will be in accordance with the expedited time of the order, if it is not expedited, the sample will be delivered in three days.

PCB circuit board manufacturers are mainly divided into two parts:

Allegro, this kind of sample and small batch, the speed is relatively fast. There are many for the expedited class.

Mass production, this kind of mass production. The delivery time is within the normal range. So it depends on whether you do batch or sample, these can be done.

Proofing is generally divided into: 12 hours, 24 hours, 48 hours, 72 hours. Normal delivery time, delivery time is different for each time period**.

OK. Many PCB buyers in the large-scale PCB mass production, will be in many PCB manufacturers for small batch proofing test, although is a small batch of PCB proofing, but to find a cost-effective from the vast PCB proofing manufacturers, in fact, it is not easy to conceal this matter. So what are the key points we are looking at when choosing a small PCB and batch proofing allegro factory?

First: look at the speed.

Small batch PCB proofing, generally have certain requirements for the delivery cycle, to choose high quality from different proofing manufacturers as soon as possible, speed is the most critical difference. There are also many buyers who believe that only when the production efficiency is up to the standard, you can provide expedited service for a variety of products on the basis of ensuring on-time delivery.

Second: look at the quality.

After passing the first pass, there is no doubt that we need to check whether the circuit board matches the relevant parameters in the design document, such as whether the copper thickness of the PCB meets the standard, whether the edge of the circuit is flat, whether the surface of the board is smooth and tidy, whether the copper foil adhesion is good enough, and so on, these are important factors to check the quality of the board. Only when the quality of the proofed board is qualified can the development of bulk orders be guaranteed.

Third: look at the service.

In the process of finding and purchasing PCB proofing services, more customers will take the overall consumer experience and the convenience of operation as one of the factors to judge whether the partner is of high quality, so it is recommended that customers should also pay attention to the other party's pre-sales and after-sales service and smooth operation experience in the process of finding PCB proofing manufacturers. Ensure that the cooperation in the later stage is more convenient.

As long as it is a PCB circuit board, it can be proofed. However, there are several types:

Hour expedited proofing.

Hour expedited proofing.

Hour expedited proofing.

4. Ordinary cycle proofing.

The above are all based on your proofing needs, and the products are not in a hurry. You can choose to dismantle it, and each ** will be relatively different in the age of the jujube.

PCB proofing is to make samples of the circuit board after the drawing is completed to verify the function, so the drawings are sent to the circuit board yard for processing, which is called PCB proofing.

The specific PCB production process is as follows:

1.Printed circuit boards.

2.Make an inner route.

3.Pressing.

4.Drilling.

5.Plating through holes with copper once.

6.Outer line secondary copper.

7.Solder mask green paint.

8.Text printing.

9.Contact processing.

10.Forming cutting.

11.Final inspection of packaging.

Proofing: It is to do a small number of boards and boards first to test the function of the problem.

Process: Generally, there are (spraying tin, environmental protection and non-environmental protection), anti-oxidation (called solder mask), gold making process (immersion gold, electric gold), and immersion silver process. Such as: double-sided, single-sided, multi-layer board. Buried plates.

PCB proofing is to make a model, the process is to spray tin, lead-free tin spraying, immersion gold, electric gold, gold finger + tin spraying, anti-oxidation, OSP impedance board, blind and buried hole plate, Kunshan Express Electronics**** These processes can be made.

Proofing: It is to make a small number of samples first.

Craft: It depends on what type of board you have. Such as: double-sided, single-sided, multi-layer board. Buried plates. Crafts are different.

In terms of PCB proofing, Jetobang has done a good job, and there is no problem with the quality.

Jetobong.

PCB proofing refers to the trial production of printed circuit boards before mass production, which is mainly used in the process of electronic engineers designing circuits and completing the drawing of PCBs, and then conducting small batch trial production to circuit board factories, that is, PCB proofing.

Double-sided PCB board.