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  • Before we dive in and define what is single sided PCB, we must know what is PCB.
  • PCB is a acronym of Printed Circuit Board that connect the electronics components with pads, tracks and lines incorporated on a laminated copper sheet.
  • It is made up of insulating material, also known as substrate, on which conducting copper layer is laminated.
  • Latest PCB design and manufacturing have made the latest technology innovative and hassle free. because it allows us to get rid of hectic method of point to point wiring which was mainly used for connecting the electronic components electrically. If you intend to design PCB by yoursel.
  • Whenever we define layers of PCBs, we refer to number of conductive layers.
  • Single sided PCB, also termed as single layer PCB, is a type of PCB which comes with only one layer of conducting material on one side of the board and other side is used for incorporating different electronic components on the board.
  • Single sided PCBs are the start point of printed circuit board technology and still plays an important in electronic industry.
  • These PCBs are usually cheaper to manufacture and are an ideal choice for low density designs.
  • Single sided PCBs came into play in 1950s, manufactured in USA and still dominate the electronic market because of their simple design.
  • It was produced to give components mechanical strength and strong base with different pads and lines incorporated on it to electrically connect different components on the board.
  • In 1956 single sided PCBs took a big turn in terms of their progress when number of PCB professionals from Japan took part in manufacturing of single sided PCBs.
  • Paper phenolic aldehyde was widely used in the early stage of manufacturing process of single sided PCBs but soon it was replaced by glass fiber epoxy resign because paper phenolic aldehyde exhibited bad solder thermal stability, low electric insulation, and twist issues.
  • Glass fiber epoxy resign gives stability for variety of temperature variations and it doesn’t fluctuate or decompose too quickly.
  • Hobbyists who are highly interested in making convoluted circuit design find single sided PCB useful as it gives them flexibility in routing and doing other things with ease like decoupling, proper ground connections and other electrical considerations.
  • If you are embedded geek, then making PCB design using Proteus Ares would be much more easy and useful than using other software.

Construction of Single Sided PCB

  • The base material, which is also named as substrate, is composed of insulating fiber glass which gives PCB strength and compact look. The nature and type of base material defines if board is going to be Flexible PCB or Rigid PCB.
  • Above substrate, there lies a copper layer which provides conducting path for various components on the board. The copper thickness is different for different boards depending on your needs and requirements and is defined in ounces per square foot.
  • On the top of copper foil, there exists a solder mask layer. This layer is mainly used for protection and makes the copper foil insulating which helps in avoiding the conduction in case direct contact happens with some conducting material.
  • On the top of all layers, there exists a silkscreen layer that is mainly used for adding symbols and characters on the board so a common person can anticipate the clear understanding of the board.

Single Sided PCB or Double Sided PCB?

Which PCB you pick depends on your needs and requirements. Sometimes single sided PCBs are more suitable for project design as compared to double sided PCBs and vice versa.

Before you pick any type of PCB for your project, you must take one thing into consideration that single sided PCB layouts are more difficult to route as compared to double sided PCB, but following are the reasons why you should put an effort for making and picking single sided PCB over other PCBs.

  • If you are hobbyist or students, and concerned to make PCB at home, you must know, developing single sided PCBs at home are much easier than developing double sided PCBs at home.
  • As you are a manufacturer and very much interested to keep your cost down and producing a single sided PCB a most economical process. In terms of cost, producing single sided PCBs are more economical than producing double sided PCBs.
  • Almost all HVAC systems make use of single sided PCBs, because they are more reliable and cost effective and don’t compromise the overall quality of the product.
  • Using through hole technology in single sided PCBs still have its drawbacks and limitations because conductive layers, lines and pads stay on single side of PCB but it still is a cheap process to combine all components at one place. Multilayer PCB is also used in many applications where single sided and double sided PCBs fail to fulfill the requirements.

Advantages of Single Sided PCB

  • It is an ideal choice for low density designs.
  • Highly economical in nature that makes it useful for simple electronic applications.
  • It undergoes simply manufacturing process and encounters very little manufacturing issues that makes it an ideal pick for most of the professionals.
  • You can also work with online PCB design services.

Applications

Single sided PCBs are widely used in many electronic applications ranging from simple to intermediate to complex circuits.  Following are some applications they can be used for.

  • Vending machines
  • Camera systems
  • Surveillance
  • Calculators
  • Printers
  • Solid state drives
  • Coffee makers
  • LED lighting
  • Packaging equipment
  • Sensor products
  • Power supplies
  • Relays
  • Radio and stereo equipment
  • Timing circuits

That’s all for today. I hope you have enjoyed the article. However, if still you feel skeptical or have any question you can ask me in the comment section below. I’d love to help you according to best of my expertise. Keep your feedback and suggestions coming, they will allow us to give you quality work that resonates with your needs and expectations. Stay Tuned!

A Printed Circuit Board Is Not Always a “Board”

When the term “PCB” is used, many people think of a rigid PCB (printed circuit board). However, the term PCB can refer to either a rigid PCB or a flexible PCB. Flexible PCBs are more commonly known as flex circuits, but they are also known by other names including flex boards, flexible circuit boards, flexible printed circuit boards and, more officially, flexible electronics. Flex circuits have recently gained huge popularity due to the fact that they can be shaped, bent, twisted, and folded into limitless configurations. In the end, however, rigid PCBs and flexible PCBs serve, in the most basic sense, the same ultimate function, which is connecting various electrical and mechanical components together.

When to Use Rigid and When to Use Flexible

Rigid PCBs typically cost less than flex circuits. I say “typically” because when considering the total cost of ownership there are some applications that, when using flexible PCBs, may be less expensive compared to using rigid PCBs. To get a true and accurate understanding of the total cost of ownership, you first need to appreciate the fact that flex circuits may eliminate the need for components such as connectors, wire harnesses, and other circuit boards. By removing these components from a design, material cost, labor and assembly cost, and scrap cost are all reduced.

Many electronic devices (laptop and desktop computers, audio keyboards, solid-state drives (SSDs), flat-screen TVs and monitors, children’s toys, and various electronic gadgets) employ rigid PCBs instead of flexible PCBs. However, flex circuits may be found in ultra-compact and/or high-performance devices, including GPS units, tablets, smart phones, cameras, and wearables.

Greater sophistication is not the only reason to use flex circuits; low-tech applications (such as under-the-counter LED lights, see figure below) may utilize flex circuit technology, in some cases because it makes installation much easier.

Finally, a flex circuit and a rigid circuit can be used together—as a unified PCB—if the need arises. This approach, perhaps, provides the best of both worlds. See Figure 2 below.

Some Similarities and Differences Between Rigid PCBs and Flex Circuits

When designing rigid PCBs, certain design rules must be followed, including minimum hole sizes, minimum space and trace width, minimum distances to board edges, and copper and overall design thicknesses. Additionally, many manufacturing process steps are shared between rigid and flexible PCBs. Such process steps include the drilling and plating of holes and vias, photo imaging and development, the etching of copper traces, pads, outlines, and planes, and the heating (baking) of the circuit boards for the purpose of removing moisture from the PCBs. At this point in the manufacturing process, rigid PCBs head to the solder mask station while flex circuits go to the coverlay station.

Flex Circuit Overlay

Flex circuit overlay, or coverlay, as it’s also known, is a lamination process used for encapsulating and protecting the external circuitry of a flex circuit. A flex circuit’s coverlay film is similar to a rigid PCB’s solder mask, with one big difference…the coverlay film is flexible! According to allflexinc.com, “The coverlay film is generally a polyimide film that is coated with a thermoset adhesive. Film thicknesses range from .0005” to .005” with .001” and .002” the most common.”

The polyimide and adhesive coverlay is laminated using pressure and heat, where the heat helps the adhesive to easily flow and fill in any gaps between traces and pads; this prevents the trapping of air between the layers. Again from www.pcbjhy.com: “The adhesive flowing is necessary as it helps assure complete surface contact and encapsulation. The adhesive will tend to ooze out slightly around the openings shown in the diagram below. This oozing is commonly referred to as ‘adhesive squeeze out’ and is actually a desired phenomenon.”

Once the coverlay lamination process is finished, any component and/or feature openings are made using drilling, routing, or laser cutting. Etching cannot be used.


IPC Standards for Rigid and Flexible PCBs

The list of IPC standards below applies to rigid PCBs and flex circuits. Take note that this list is not exhaustive, and additional IPC standards may need to be considered. You should consult the ipc.org website for a full list of available IPC standards.

IPC-2221A, Generic Standard on Printed Board Design

IPC-2223, Sectional Design Standard for Flexible Printed Boards
IPC-4101, Specification for Base Materials for Rigid and Multilayer Printed Boards
IPC-4202, Flexible Base Dielectrics for Use in Flexible Printed Circuitry
IPC-4203, Adhesive Coated Dielectric Films for Use as Cover Sheets for Flexible Printed Circuitry and Flexible Adhesive Bonding Films
IPC-4204, Flexible Metal-Clad Dielectrics for Use in Fabrication of Flexible Printed Circuitry
IPC-6013, Qualification and Performance Specification for Flexible Printed Wiring


In Conclusion

Although both rigid and flexible printed circuit boards fundamentally serve the same purpose—connecting various electrical and mechanical components together—both technologies have their place in life. While many of the same design rules are used with both rigid and flexible PCBs, flexible PCBs require some additional rules due to their additional manufacturing process steps. And even though rigid PCBs may seem, at least initially, to cost less, one should definitely consider a design’s total cost of ownership before declaring that flex circuits are too expensive.

What is Gold Fingers PCB

As printed before, the term "Gold-finger PCB” is employed to consult with gold-plated connectors mounted at the interconnecting edges of a fringe PCB. different names to decision a Gold finger PCB abe re a Gold connection, Edge connection, Edge-Board connection, connection Finger, Contact Fingers, Gold faucets or Gold Tips.

It is potential you too might need interacted with Gold Fingers PCBs within the past. Wait, are you able to keep in mind interacting with a group of shiny wanting, finger-like projections on the sides of a change of integrity finish of a peripheral circuit board? Aha! that is what i'm talking concerning here. They agree fingers within the sense that they appear skinny and elongated at the contact edges of a PCB. Gold Fingers square measure typically fitted onto the sides of fringe PCBs or epitome boards to boost property with larger boards.

The edge connectors (i.e., gold fingers) also are plaited with flash gold (hard gold) with a thickness that varies between 3u’ and 50u’ (units in small Inches).

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Why Gold Plaiting is critical For Gold Fingers PCB

Primarily, PCB affiliation points square measure subject to constant plugging and unplugging due to their nature of interconnecting PCBs. Hence, while not a robust contact edge, they're at risk of wear-and-tear which will cause device out of whack. The act of plaiting the connectors with different metals (in this case gold) is finished to boost the sturdiness of the sting connectors. 

But i'm certain you may have wondered: of all metals, why ought to edge connectors be gold-plated? Isn’t gold too expensive? Couldn’t copper conduct higher and be a great deal cheaper than Gold? Well, I actually have associate degree answer: certain, gold plating of gold fingers is pricey, however it's necessary.

Gold was chosen over different metals as a result of to this point, gold has verified to possess high corrosion resistance, high electrical conduction (second to copper and silver) and will be alloyed with metallic element or nickel to extend its resistance to wear-and-tear. Earlier experiments that were done to determine the resistance of gold vis-à-vis its resistance and compared to different standard metals showed that gold had a lower resistance than different metals as shown in Table one below. 

Gold is additionally inert. It doesn't oxidize or react without delay with different metals. This property of gold builds it a perfect option to make the components that square measure at risk of be exposed or doubtless to react with different metals. although silver is typically helpful, it's not counseled for business productions as silver is vulnerable to chemical compound and chloride attacks.

Aluminum PCB Board for Led, Led Round PCB Board

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One-stop PCB assemblies service, We can offer 1 to 24Layer PCB fabrication, PCB design, PCB layout, PCB manufacturing, PCB Assemblies, components sourcing, PCBA Function Test, design solution.

Quick Details Quote requirement

1)Gerber file and Bom list

2)Clear pics of PCBa or PCBa sample for us

3)Test method for PCBA

4)Other Detailed requirements

All kinds of products passed ROHS,REACH export
  • Various connectors can be provided according to your drawing and requirement
  • Samples can be provided for customer if needed
  • Products are 100% tested before delivery
  • Products would be sent out within 3-5 days after we receive the payment
  • Available for ODM/OEM order
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PCB assembly: 

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Aluminum PCB Board for Led, Led Round PCB Board

Hello, are you still looking for some manufactory to test your PCB circuit design ?

we offer 3-6 workdays delivery time for make prototypes.

And should you send us the gerber file. we would give your detailed information about the production at once, such as quotation, delivery etc.

双面和多层印刷电路板的制造

这是第一个在一系列文章,将解释什么是参与的印刷电路板(PCB)中制造工艺 A的双面印刷电路板和一多层电路板。这将是非常高级的概述要提供人是不熟悉在随着制造工艺的基础知识的PCB制造如何中。

当然,如果您在PCB行业,我会邀请您发表评论并分享您的想法。

双面PCB和多层PCB有什么区别?

双面PCB

双面PCB(也称为双镀通孔或DSPT)电路是高科技应用的门户。它们通过使用过孔在顶层和底层之间交替,允许更近(更多)的布线迹线。印刷电路板技术可能是业界最流行的PCB类型。
双面PCB电路板

双面PCB的优点:

设计师更灵活
增加电路密度
相对较低的成本
中间级别的电路复杂性
减小电路板尺寸(可降低成本)

双面PCB的应用

细线表面贴装,超高铜构造,高温和低温,焊料涂层,银色和金色饰面只是DSPT应用的几个例子。

以下是可以使用双面PCBS的应用:
  • 工业控制
  • 电源
  • 转换器
  • 控制继电器
  • 仪表
  • 监管机构
  • UPS系统
  • 电源转换
  • HVAC
  • LED照明
  • 硬盘
  • 打印机
  • 电话系统
  • 电力监控
  • 汽车仪表板
  • 线路电抗器
  • 测试设备
  • 放大器
  • 交通系统
  • 自动售货机
立即获取免费快速报价

多层PCB

多层PCB与双面PCB略有不同。

正如你可以看到右图,A 四层电路板开始以刚性芯体FR4和铜。内部内核处理对于痕迹那些优先于其他玻璃纤维和铜被添加,以及整个董事会层压在一起。

它像胶一样保持内芯粘附在外芯铜箔上。

它们与预浸料和内芯夹在一起,并放置在PCB层压机中。一旦冷却,玻璃纤维就会硬,整个板都很硬。

我们将在后面的文章中更详细地讨论这些步骤。

这是你的预期或想法吗?

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