Stencils, also called SMT stencils, play a key role in transferring accurate amount of solder paste to correct positions on bare circuit boards ready for assembly. In other words, stencils can fast and efficiently ensure the most accurate solder paste amount and optimal electrical connection. With solder stencils, it is possible to use metal squeegee blades to apply solder paste easily over the openings on PCBs and make stencil to be well aligned with the surface of the advanced circuit board.

According to SMT stencil manufacturing technologies, we provide two types of stencils: laser-cut stencils and chemical-etch stencils.

Laser-cut Stencils

The openings are lasered on 100% stainless steel. Generally speaking, this kind of stencil can be produced with high quality and a high degree of precision within a short time.

• Advantages: high accuracy; barely influenced by objective elements; trapezoid opening beneficial for demoulding; suitable for accurate cutting; reasonable price;

• Disadvantages: relative low manufacturing speed.

Chemical-etch Stencil

The openings are etched into the metal using acid. Usually this kind of stencil offers better protection on material temper and hardness.

• Advantages: one-time formation; relatively high manufacturing speed; low cost;

• Disadvantages: tending to form sand clock shape or large openings; numerous manufacturing stages and accumulating errors; unsuitable for fine pitch stencils; bad for environmental protection.

How to Determine the Size of the Stencil?

PCB stencil size is composed by two parts: internal size and overall size. Internal size is the size compatible with that of PCB ready to be assembled while overall size refers to the size compatible with printer parameter limit. As long as both sizes are accurately designed, stencil will be able to make full use of its functions.

Internal size of stencil can be figured out conforming to the following rule:
• Width of Framed Stencil = width of PCB + 100mm while its Length = length of PCB + 100mm
• Width of Frameless stencil = width of PCB + 200mm while its Length = length of PCB + 200mm

For example, if one circuit board size is 50*50mm, then the size of its framed stencil should be around 150*150mm and the size of its frameless stencil should be around 250*250 mm.

It’s easy to remember and operate so it worked for manual solder paste printing in SMT assembly prior to the advent of automatic printer. It can be said that different PCB sizes lead to generations of different internal sizes of stencil.

When it comes to automatic solder paste printer, however, it’s relatively solid. Overall size of stencil has to be determined by parameter limit of the equipment, that is, printer, because stencil has to work within the range of printer with a frame. Different printers feature different parameter regulations. As far as circuitcardassembly is concerned, the stencil size compatible with our printer can be either 650mm*650mm or 736mm*736mm.

PCB designers have to focus on internal size of stencil, they don’t need to care about its overall size since it is generally determined by the parameters of printer in your contract assembler workshop.

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Among all Metal core PCBs (aka MCPCBs, known for their ability to provide effective thermal dissipation for electronic products), Aluminum PCBs is the most common type – the base material consists of aluminum core with standard FR4. It features a thermal clad layer that dissipates heat in a highly efficient manner, while cooling components and increasing the overall performance of the products. Currently, Aluminum Backed PCBs is regarded as the solution to high power and tight tolerance applications.

AssemblePCB: An Experienced MCPCB Manufacturer

AssemblePCB been manufacturing aluminum PCBs for 10+ years. Our full feature aluminum circuit boards making capabilities and Free DFM Check allow you to get high-quality aluminum PCBs done within budget. Our printed Aluminum PCBs are widely used for LED lighting, power equipment and automotive systems.

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The following table presents some of our Aluminum Core materials:

Check our Aluminum core PCB manufacturing capabilities in the following table:

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Should you have any question about Alumimum PCB design, manufacturing capabilities, get in touch with us right now. One of our skillful engineers will respond very quickly.

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As the name suggests, it is a circuit board that integrates rigid PCB and flexible circuit board technology.
Rigid-flex technology can improve the PCB boards for bending stiffness, making them more stable and reliable during operation. Adding rigid components to PCB boards, such as metal plates or reinforcement materials, increases the mechanical strength of the PCB and reduces the possibility of PCB board deformation. At the same time, flexible components can improve their heat resistance and cold resistance.

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Advantages of Rigid-Flex PCB

• Minimize the number of parts by maximizing the space

• Fewer solder joints ensure higher connection reliability

• Easier handling during assembly compared to flexible boards

• Simplifying the PCB assembly process

• Reduce logistics and assembly costs

• Innovative design

Application of rigid-flex PCB

Rigid-flex PCBs are widely used in consumer electronics, medical devices, and automotive systems due to their unique advantages. As people’s demand for innovative and high-performance electronic products continues to grow, rigid-flex PCBs play a crucial role in promoting the progress of design, materials, and manufacturing technologies to support next-generation product development and utilization.

Our Rigid-Flex PCB Manufacturing Capabilities

Assemble PCB rigid-flexible PCB service advantages

• Diversity of services:

Circuitcardassembly provides various PCB manufacturing services, such as rigid-flex, flexible and rigid PCB, flex PCB prototyping, etc., to meet your project needs. You only need to tell us your demands, which will be satisfied at assemblepcb.

• High-quality:

AssemblePCB is committed to manufacturing high-quality PCBs, using the best materials and the most advanced technology and equipment to ensure the performance of PCBs. At the same time, we also have a complete supply chain, which allows us to purchase high-quality and low-priced materials to reduce manufacturing costs.

• Reasonable price:

We develop cost-effective solutions for rigid-flex PCB manufacturing, providing reasonable prices without influencing quality so that more customers can enjoy rigid-flex PCB services.

• Special Customization Service:

We provide tailor-made rigid flex PCB fabrication to solve your project needs and adapt to design diversity.

• Strong production capacity:

We have experienced experts and teams, multiple PCB manufacturing factories, more than 2,000 employees, and advanced automated production equipment and testing equipment to ensure that high-quality, high-performance PCBs arrive to your hand on time.

• Strong production capacity:

We have experienced experts and teams, multiple PCB manufacturing factories, more than 2,000 employees, and advanced automated production equipment and testing equipment to ensure that high-quality, high-performance PCBs arrive to your hand on time.

If you have any questions about our rigid-flex PCB manufacturing or want to learn more about our PCB services (including but not limited to rigid-flex PCB), contact us now!

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Flexible printed circuit boards, also called Flexible PCBs or Flex PCBs, derive their name for their ability to enable the circuitry to be designed to fit the electronic device or product, as opposed to building the device to conform to the circuit board. Flex boards are characterized by a distinctly patterned printed circuitry and component arrangement highlighted by a malleable base material.

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What are Advantages of Flexible PCB?

Flexible printed circuit boards offer a number of potential benefits including:
• Saving Space. Flex PCB design requires only about 10 percent of the space and weight of an ordinary circuit board assembly, offering greater installation and packaging freedom. The inherent flexibility also permits tighter bend capabilities.
• Maximum Reliability. A flexible printed circuit board requires fewer interconnects, which in turn requires fewer contact crimps, connectors and solder joints. Simply put, a flexible PCB board does not contain as many potential sources for failure, which enhances their reliability.
• Enhanced Capabilities. The flexible printed circuits boards are compatible with virtually any type of connector or component and works well with options such as ZIP connectors. They also perform extremely well in extreme temperatures and offer superior resistance to radiation and chemicals.
• Cost Savings. Cost-saving advantages of Flexible PCBs include reduced material and packaging demands, lower parts replacement costs and assembly errors that could result in the need for repairs.

These benefits make flex PCBs ideally fit for a wide range of applications in industries such as Military, Transportation, Medical, Consumer Electronics, Automotive, Aerospace, Communications and Industrial.

Assemble PCB: A Leading Flex PCB Manufacturer for More Than a Decade

At assemblepcb, we specialize in the fabrication and assembly of flexible PCB products for use in the manufacturing of medical devices and various types of telecommunication and industrial equipment. Our custom PCB manufacturing capabilities allow us to develop and produce a top-performing flex PCB that meets your unique requirements. We can also work with you to produce a custom flex PCB prototype that will significantly improve your prospects of a successful project outcome. For detailed capabilities, please refer to the following form.

Our High-Quality Flexible PCB Manufacturing Process

A key reason why assemblepcb is widely regarded as a top PCB manufacturer is our unwavering commitment to quality. Our experienced team checks each design and takes the time to review it with you prior to production. This ensures the circuit design is ready for manufacturing, and your boards will deliver the performance you expect. We guarantee the quality of our flex PCB parts and components.

Contact for Custom Quotation or Get More Information

For Flex PCB price, please submit a quote request by clicking below button to send us your PCB design file (Gerber format preferred | Preorder Checklist) & requirements, we’ll reply you by email as soon as possible.If you have any other more questions,please feel free to contact us.

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High density interconnect PCBs are a way of making more room on your printed circuit board to make them more efficient and allow for faster transmission. It’s relatively easy for most enterprising companies that are using printed circuit boards to see how this can benefit them.

High density interconnect (HDI) PCBs represent one of the fastest-growing segments of the printed circuit board market. Because of its higher circuitry density, the HDI PCB design can incorporate finer lines and spaces, smaller vias and capture pads, and higher connection pad densities. A high-density PCB features blind and buried vias and often contains microvias that are .006 in diameter or even less.

Key HDI PCB Benefits

The evolution of high-density PCB technology has given engineers greater design freedom and flexibility than ever before. Designers using HDI high density interconnect methods now can place more components on both sides of the raw PCB if desired. In essence, an HDI PCB gives designers more space to work with, while allowing them to place smaller components even closer together. This means that a high-density interconnect PCB ultimately results in faster signal transmission along with enhanced signal quality.

HDI PCB is widely used to reduce the weight and overall dimensions of products, as well as to enhance the electrical performance of the device. The high-density PCB is regularly found in mobile phones, touch-screen devices, laptop computers, digital cameras and 4G network communications. The HDI PCB is also prominently featured in medical devices, as well as various electronic aircraft parts and components. The possibilities for high-density interconnect PCB technology seem almost limitless.

HDI PCB Applications

HDI PCBs are appropriate for a wide range of industries. As mentioned above, you’ll find them in all types of digital devices, like smartphones and tablets, where miniaturization is key to the effective application of the product. You can also find high-density interconnect PCBs in automobiles, aircraft and other vehicles that rely on electronics.

One of the most critical areas where the high-density PCB is making huge inroads is in the medical arena. Medical devices frequently need small packages with high transmission rates that only HDI PCBs can supply. For example, an implant needs to be small enough to fit in the human body, but any electronics involved in that implant absolutely must efficiently allow for high-speed signal transmission. Here, the HDI PCB indeed is a godsend. HDI PCBs can also be useful in other medical equipment, like emergency room monitors, CT scans and much more.

No matter your industry, you’re probably already getting some ideas about how high-density interconnect PCBs can make the electronics you produce or use even better – get in touch with circuitcardassembly to discuss it. We’ll let you know if you’re on the right track and help you decide exactly how beneficial an HDI PCB can be to your industry. Then, you can determine whether or not to take the next step.

No matter your industry, you’re probably already getting some ideas about how high-density interconnect PCBs can make the electronics you produce or use even better – get in touch with circuitcardassembly to discuss it. We’ll let you know if you’re on the right track and help you decide exactly how beneficial an HDI PCB can be to your industry. Then, you can determine whether or not to take the next step.

High Density PCBs of Impeccable Quality

Over the course of a decade in business, assemblepcb has established a hard-earned reputation for manufacturing PCBs of the highest quality. Our custom PCB manufacturing capabilities enable you to get the finest quality HDI PCBs at competitive prices without min order quantity requirement. Our team run design for manufacture check on your custom PCB file and consult with you to ensure it is ready for manufacturing and that your boards will meet your performance requirements. We also have an on-site quality control department to verify the finished product meet your high quality standards.

We’re capable of manufacturing HDI PCB up to 24 layers in various structures, check the following table for our available HDI PCB structures:

Check our HDI PCB capabilities by reviewing the table found below:

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Click the button below to submit your HDI PCB circuit specifications, We will reply to your price via email as soon as possible.

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The post HDI PCB first appeared on Assemblepcb.

At assemblepcb, our high-temperature PCB products can handle extreme PCB glass transition-temperature rates and retain their integrity, so you can use these high-TG FR-4 boards with confidence. We have a 99% plus customer satisfaction rate and are well known for our reliable, fast service as shown by our customer testimonials.

Quote for High-Tg PCB Fabrication

If you’re not sure whether your particular operation requires FR-5 high-TG boards or how exactly a TG PCB works to protect your sensitive circuits during implementation, we’re happy to tell you everything you need to know. Read on to gain a full understanding of just how a high-temperature PCB works and what it can do for you. Once you’re satisfied that FR-4 high-TG boards are right for you, follow the steps at the bottom of this page to get free quote on high TG FR-4 boards from assemblepcb today.

High-TG PCB Advanced Circuits Specification

The glass transition temperature of PCB, referred to as “Tg”, indicates the point at which the PCB material will begin to transform. If the operating temperature exceeds the designated Tg value, the board will begin to change from a solid to a liquid state, which is likely to have an adverse effect on its ability to function.

Standard PCBs are manufactured with materials offering a TG value of 140°C, which can withstand an operating temperate of 110°C. While this may not be suitable for extreme-temperature processes that are commonplace in applications such as automotive, industrial or high-temperature electronics. In these situations, a PCB made from FR-4 material can often provide the best solution.

What Is FR-4?

FR-4 is a grade designation for flame-retardant fiberglass reinforced epoxy material. Thus, FR-4 PCB offers a much greater level of resistance to heat than a standard PCB. FR-4 circuit boards are divided into four classifications that are determined by the number of copper trace layers found in the material:
• Single-sided PCB / Single-layer PCB
• Double-sided PCB / Double-layer PCB
• Four or more than 10 layers PCB / Multilayer PCB

Providing the Right High-Temperature PCB for Your Applications

Assemblepcb offers a wide selection of high-temperature PCB products manufacturing services either with FR-4 or other high-quality heat- and temperature-resistant Tg materials. We are able to perform high-temperature PCB fabrication for automotive, industry and high-temperature electronics applications. We can manufacture High-Tg PCBs with a Tg value of up to 180°C. Following table lists some of our commonly used materials for High-Tg PCBs production.

Regardless of the scope or complexity of your PCB application, we have the technical expertise to develop customized PC boards that meets your specific demands. Check our capabilities in here:

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