PCBMay is the primary manufacturer of SMD PCB assembly. It provides a variety of SMD PCD assembly services. We have exported our SMD PCB assembly and other related products all over the world.
- Over 15 years, SMD PCB assembly manufacturer
- ISO certified and UL certified
- Fast and secure package
- Engineers and technical team with 20 years of experience
Why PCBMay is Expert in SMD PCD Assembly Manufacturing
PCBMay is one of the most well-known SMB PCB assembly companies. In China, we have over 15 years of experience manufacturing SMD PCB assembly. We are known as a competent, trusted, and expert manufacturer of SMD PCB assembly due to our production experience.
We provide various sizes of high-quality SMB PCB assembly with different layers at affordable costs. You may send us the details, like the layers, materials, thickness, or sketch of what you need in SMB PCB assembly, and we are willing to assist you during and after the production. We have an expert engineer and technical team assuring you of the high-quality products. Would you please not hesitate to contact us?
Types of SMD PCB Assembly Meet Your Requirements
Why Choose PCBMay for Your SMD PCB Assembly
PCBMay is one of the largest manufacturers of SMB PCB assembly in China. We can guarantee you the best SMD PCB assembly through the help of our expert engineer and technical personnel with their 20 years experience, which can provide our customers with timely and excellent SMB PCB assembly.
PCBMay is manufacturing and supplying SMB PCB assembly to customers globally. We deliver them in the fastest and safest way. Thanks to our advanced technology, we are confident enough to render our service and expect your demands are met fully. We put so much effort into this to give you the best PCBMay SMD PCB assembly. Would you please send a message right away?
Related SMD PCB Assembly
SMD PCB Assembly Production Details As Following Up
|Base Material||KB、Shengyi、ShengyiSF305、FR408、FR408HR、IS410、FR406、GETEK、370HR、IT180A、Rogers4350B、Rogers4000、PTFE Laminates(Rogers series、Taconic series、Arlon series、Nelco series)、Rogers/Taconic/Arlon/Nelco laminate with FR-4 material(including partial Ro4350B hybrid laminating with FR-4)|
|Board Type||Backplane、HDI、High multi-layer 、blind&buried PCB、Embedded Capacitance、Embedded resistance board 、Heavy copper power PCB、Backdrill.|
|Copper Thickness||Min. 1/2 OZ, Max. 10 OZ|
|Maximum Board Size||1100*500mm(43”*19”)|
|Min laser drilling size||4mil|
|Solder Mask||Green, Black, Blue, Red, White, Yellow,Purple matte/glossy|
|Surface Treatment||Flash gold(electroplated gold)、ENIG、Hard gold、Flash gold、HASL Lead free、OSP、ENEPIG、Soft gold、Immersion silver、Immersion Tin、ENIG+OSP,ENIG+Gold finger,Flash gold(electroplated gold)+Gold finger,Immersion silver+Gold finger,Immersion Tin+Gold finger.|
|Min. Annular Ring||3mil|
|Aspect ratio||10:1(HASL Lead free、HASL Lead、ENIG、Immersion Tin、Immersion silver、ENEPIG);8:1(OSP)|
|Impedance control||±5ohm(＜50ohm), ±10%(≥50ohm)|
|Other Techniques||Blind/Buried Via|
|Via in Pad|
Here there’re many laminate material datasheets, they’re useful and helpful for you, please see them:
|SUPPLIER||PCB LAMINATE||TYPE||MATERIAL DATASHEET||TG||TD||DK(1MHZ)||DK(1GHZ)||DK(10GHZ)|
|Hitachi||MCL-BE- 67G||Modified Epoxy||DOWNLOAD||140||340||4.9||4.4||–|
|N4000-13EP SI||Modified Epoxy||DOWNLOAD||210-240||350||–||3.4||3.2|
|Stablcor||ST325||–||DOWNLOAD||Thermal conductivity:75w/m.k(with 1oz copper)|
|ST10||–||DOWNLOAD||Thermal conductivity:325w/m.k(with 1oz copper)|
|Bergquist||ht-04503||–||DOWNLOAD||Thermal conductivity:2.2w/m.k(with 1oz copper)|
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PCBMay- The Ultimate Supplier Of SMD PCD Assembly
Do you need a dependable SMD PCB assembly? At PCBMay, you will be able to develop a wide range of SMD PCB assemblies. PBCMay can offer you an affordable SMB PBC assembly. We offer OEM and ODM SMD PBC assembly. We’re working with experts, designers, and engineers. SMD PBC assembly parts have high durability.
PCBMay SMD is an electrical device where the components are attached or positioned directly on the PCB’s surface. We utilize advanced Japanese SMD assembly technology to meet the demands and quality requirements of our customers.
To provide our customers with premium quality.ISO 9001, and the establishment of a strict quality system, and not only that, we are UL, RoHS, REACH certified in meeting your excellence PCDMay SMD PCD assembly. We are checking the quality in detail because we are committed not to make awful products and will not accept defective products, so It’s checked thoroughly by our experts—customizable SMD PCB assembly with your specifications in mind. We’re a PCB SMP manufacturer specializing in industrial applications. PCBMay believes it can manufacture SMD PCB assemblies significantly.
An exemplary SMD PCB assembly is a way to ensure the final product design will work. When you make the final product, your design and functionality are 100% upfront and correct. We ship your order SMD PCB assembly on time. What’s more? No minimum order on your first order.
PCBMay, as one of the world’s leading manufacturers and suppliers of SMD PCB assembly, is constantly developing cutting-edge products. It has solely earned our clients’ trust and high expectations.
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SMD PCB Assembly: The Ultimate FAQ Guide
Are you struggling to design large electric circuits?
Then SMD PCB assembly will be the ultimate solution for you. It enables the dense gathering of components on PCB. So, you can reduce the size of circuits without compromising the performance. SMD PCB assembly adds an extra dimension to circuit designing technology.
SMD PCB assembly is an automatic process that ensures high-quality PCB manufacturing. PCBMay, the leading PCB manufacturer provides reliable SMD PCB assembly service.
Do you know about its ins and outs? Don’t worry. This FAQ guide will answer your every query about SMD PCB assembly. Let’s start.
- What is SMD PCB Assembly?
- What Are The Common SMD PCB Assembly Components?
- What Are The SMD Active Components For Surface Mount Technology?
- What Are Plastic SMD Packages In SMD PCB Assembly?
- What Are Passive SMD Components?
- What Are Ball Grid Array (BGA) SMD Components?
- What Are The Differences Between SMD And SMT?
- What Are The Differences Between SMD PCB Assembly And Throghhole (THT) PCB Assembly?
- What Are The Advantages Of SMD PCB Assembly?
- What Are The Disadvantages Of SMD PCB Assembly?
- What Are The Applications Of SMD PCB Assembly?
- What Are The Cost Benefits Of SMD PCB Assembly?
- What Is The Process Of Clearing SMD Components?
- How To Quality Control SMD Components?
- What Are SMD Resistors?
- What Are SMD Resistor Networks?
- What Is An SMD Resistor Calculator?
- What Is The SMD Resistor Package?
- What Are Surface Mount Tantalum Capacitors?
- What Are Tubular Passive SMD Components?
- What Is Resistor SMD Code?
- What Are SMD Codes?
- How To Identify SMD Components In SMD PCB Assembly?
What is SMD PCB Assembly?
SMD PCB assembly refers to a part of PCB fabrication where all surface mount devices are applied to construct the complete PCB. The components of SMD (Surface Mount Device) are placed onto the PCB surface.
SMD PCB assembly conducts its operation through surface mount technology(SMT). You can apply SMD PCB assembly on both sides of the PCB. It is highly effective for high-frequency applications.
SMD PCB Assembly
This cost-effective process maintains the smooth properties of SMD components. SMD PCB assembly promotes the high-density assembly of components. That means it enhances the opportunity of miniaturization of electronic devices.
What Are The Common SMD PCB Assembly Components?
SMD PCB assembly components have versatile categories. They are usually soldered to the PCB by SMT. You can classify SMD PCB assembly components concerning their function. Let’s have a look at the common SMD PCB assembly.
SMD PCB assembly consists of versatile diodes. Light-emitting diodes especially provide high brightness.
There are various capacitors used in SMD PCB assembly. Such as Aluminum capacitors, MLCC (Multilayer Ceramic Capacitors), Tantalum capacitors, etc. MLCC consists of different types like COG(NPO), Y5V, etc. COG capacitors are the most widely used among all of these.
Chip resistors are common SMD PCB assembly components. There is a three-digit code marked on every chip resistor. This code represents the measurement of its resistance. Here, the first two digits are specific numbers, and the third one is 10’s multiple.
It is an amalgamation of resistors having similar parameters. These resistors are used in digital signal processing. These resistors have 4-digit codes. Here, you can determine the resistance value in the same way as chip resistors.
Sometimes, “R” is marked. It indicates the decimal value. Like R12 means 0.12 ohm.
This SMD PCB assembly component promotes the frequency rate of the vibration.
SMD PCB assembly uses FET (field-effect transistors), MOSFET (metal oxide semiconductor FET), BJT (bipolar junction transistors), etc. N-P-N and P-N-P are two types of the structure of transistors.
SOT-223 and SOT-23 are the most effective transistors. Besides, fuse, IC, inductors, rectifiers, vacuum tubes, etc are some common components of SMD PCB assembly.
What Are The SMD Active Components For Surface Mount Technology?
The SMD active components for surface mount technology have efficiency in controlling the current flow.
SMD Active Components
Here, a list of the most common SMD active components is given for your convenience.
- Rectifier diode
- Zener diode
- BJT and MOSFET
- Current sensors
- Electric generator
- Vacuum tubes
You need to design the circuit with a minimum of one SMD active component for SMD PCB assembly.
What Are Plastic SMD Packages In SMD PCB Assembly?
Plastic SMD packages are effective for SMD PCB assembly when there is no requirement of airtight conditions. These SMD packages are cheaper compared to ceramic packages.
The most significant plastic SMD packages in SMD PCB assembly are given here.
Small Outline Transistors (SOT)
SOTs are usually applied in transistors and diodes. SOT 23 and SOT 89 are effective in high-pin density ICs.
Plastic SMD Package
Small Outline IC (SOIC)
SOIC has around 0.05 inches lead. SOIC, having less than 16 leads comes with a 150 mils width. But, SOIC, with more than 16 leads is compatible with 300 mils body width.
Small Outline J (SOJ)
SOJ is the combination of SOIC and PLCC. In high-density DRAMSs, SOJ with J-bend leads is an extremely worthwhile SMD package.
Plastic Leaded Chip Careers (PLCC)
PLCC with leads is useful to resist the fracture of the solder joints. But, PLCC suffers from a little bit of a high moisture absorption rate.
Besides, BGA and QFP are common plastic SMD packages at present.
What Are Passive SMD Components?
Passive SMD PCB assembly components differ from the active components in terms of the mobility of electrons. They are not capable of controlling the flow of electric current. Some notable passive SMD components are
- All resistors and capacitors
- Electro-mechanical devices
Besides, any kind of protective devices, resonators, connectors, etc are common passive SMD PCB assembly components.
What Are Ball Grid Array (BGA) SMD Components?
Ball grid array SMD components simplify the SMD PCB assembly. They have tremendous uses in high-density integrated circuits. BGA SMD components utilize the lower side of the SMD IC instead of the edge.
Ball Grid Array SMD Components
All of the contact pads are placed there. But, these pads turn into solder balls prior to the soldering. This unique placement ensures gathering all connections in a reduced portion of the entire area. Again, BGA SMD components promote the durability of circuits.
What Are The Differences Between SMD And SMT?
Sometimes, confusion arises between two similar types of words SMD and SMT. But, these two are not interchangeable.
SMT(Surface Mount Technology) is a process of placing, mounting, and soldering electronic items on PCBs. But, SMD doesn’t indicate such a process. SMD is an electronic device that is mounted onto the surface of a PCB by using SMT.
SMD influences the area capacity of PCB where SMT affects the installation of SMDs on PCB.
SMT PCB Assembly
So, there is actually no point in the difference between SMD and SMT. SMD PCB assembly makes the surface mount technology more worthwhile. The perfect SMDs promote the integrity of SMT. You can apply both SMT and SMD PCB assembly in electric circuits if needed.
What Are The Differences Between SMD PCB Assembly And Throghhole (THT) PCB Assembly?
SMD and THT(through-hole) are effective ways of PCB assembly. There are some technical differences between them.
Now, here we are explaining the distinguishing factors between SMD PCB assembly and THT PCB assembly.
SMD PCB assembly promotes the miniaturization of electric circuits. It is highly effective for arranging all components in a small portion of the PCB area.
But, through-hole technology PCB assembly demands additional space to accommodate the components. That’s why THT is compatible with bigger packages.
Through-Hole Technology(THT) PCB Assembly
SMD PCB assembly allows the one-sided soldering of PCB. BGA SMD components use only the lower side of the IC. This property is useful for low area consumption.
On the contrary, you have to solder both sides of the PCB in the case of THT.
Thermal dissipation of SMD PCB assembly is better than THT PCB assembly. SMD components on a copper grounded plane provide commendable thermal drain. But, THT with larger surface space can’t render effective heat dissipation.
SMD PCB assembly demands fewer drilling holes compared to THT. That’s why SMD is a supremely cost-effective PCB assembly process. But, higher drilling holes are needed for THT PCB assembly that increases the production cost.
The placement rate of SMD components is around a thousand times lesser than THT PCB assembly. So, SMD PCB assembly is extremely time-effective.
SMD PCB assembly offers outstanding functionality in high-density PCB. Here, the formation of the solder connections has high reliability.
In contrast, through-hole technology can’t deliver reliable solder joints during PCB assembly. In this case, manual or wave techniques are applied for soldering.
Amidst the high vibrating environment, SMD PCB assembly renders great performance. But, THT is not as durable as SMD in oscillation conditions.
Now, you can understand that SMD PCB assembly is a better choice in PCB manufacturing than THT PCB assembly.
What Are The Advantages Of SMD PCB Assembly?
SMD PCB assembly is the most reliable assembly process nowadays. You can experience numerous advantages by applying SMD PCB assembly.
Effective SMD PCB Assembly
The remarkable benefits of SMD PCB assembly are-
- SMD components require small space on PCB during SMD PCB assembly. The size and weight of SMD components are small and low respectively. It enables a dense distribution of components on PCB. So, you can use a slim PCB.
- SMD components can be placed very fast in PCB assembly. So, the production rate in SMD PCB assembly is also high.
- SMD PCB assembly uses SMT. This type of mounting onto the PCB surface renders huge flexibility in designing.
- SMD PCB assembly is compatible with extreme vibration.
- This is highly applicable in high-density PCB productions.
- SMD PCB assembly offers effective solder joints.
- It requires a few drilling holes in PCB due to its lead-free nature. That’s why SMD PCB assembly provides a low production cost. This property increases the speed of PCB manufacturing with a quality SMD PCB assembly.
- SMD PCB assembly renders a better thermal drain to the PCB surface.
- At high frequency, the properties of SMD components are never compromised.
These advantages turn SMD PCB assembly into the most efficient assembly of today.
What Are The Disadvantages Of SMD PCB Assembly?
SMD PCB assembly also has some disadvantages. The most notable limitations of SMD PCB assembly are-
- SMD PCB assembly offers a small size PCB. Again, it consists of many solder connections. This raises the difficulty in error inspection.
- SMD PCB assembly is not cost-effective in low-volume productions.
- Active and passive SMD components can’t provide high power sometimes.
Highly Functional SMD PCB Assembly
You can minimize these drawbacks by choosing a reliable manufacturer for SMD PCB assembly service. Contact us. We have been providing trustworthy SMD PCB assembly support for 15 years.
What Are The Applications Of SMD PCB Assembly?
Nowadays SMD PCB assembly has numerous applications. The impressive benefits of SMD PCB assembly are responsible for its widespread uses.
Widely Used SMD PCB Assembly
We are sharing with you some of the notable applications of SMD PCB assembly.
- Industrial pieces of equipment
- Security appliances
- Advanced electronic projects
- Light-emitting diode
- Medical instruments
- Aerospace industry
- Communication technology
- High-speed signal transmission
SMD PCB assembly is used in almost all PCB manufacturing. We offer the best SMD PCB assembly service with a huge manufacturing experience. Contact us to enjoy versatile applications which incorporate SMD PCB assembly.
What Are The Cost Benefits Of SMD PCB Assembly?
SMD PCB assembly renders immense cost benefits through the reduction of the required space on PCB.
- The cost minimization allows high-quality manufacturing with an automated assembly service.
- You can verify the performance of SMD PCB through inspection tests.
- This reduced cost makes the manufacturing process faster.
- Reduce the pollution of SMD components.
Cost-Effective SMD PCB Assembly
What Is The Process Of Clearing SMD Components?
You need to clear SMD components to ensure a high-quality SMD PCB assembly. There are some automated processes of clearing SMD components.
First, you have to verify the contamination of SMD components. Usually, contain meters are used in this case. Then wash SMD components through ISO-cleaning or Neukum process.
Clearing Process Of SMD Components
Sometimes, hot air guns are applied to remove SMD components from the PCB surface. But, this is not a widely applicable cleaning process during SMD PCB assembly. You should contact a reliable manufacturer for a hassle-free cleaning of SMD components.
Watch this video to have a better idea:
How To Quality Control SMD Components?
Quality control for SMD components is one of the most important requirements in SMD PCB assembly. You can verify the quality of SMD components by conducting some tests.
The two most effective quality control methods for SMD components are explained here.
Automated Optical Inspection(AOI)
AOI test usually compares the image of your SMD components with the ideal SMD PCB. This test is applicable in both low-budget SMD PCB assembly and high-volume commercial-grade PCB productions.
It identifies the dissimilarities and defects of SMD PCB components. In the case of commercial sectors, the AOI test uses RGB LEDs to capture images and check solder joints, faulty connections, etc.
Automated X-Ray Inspection(AXI)
Here, X-rays are used to take the images of SMD components to compare with the best SMD PCB assembly. This is a little bit costly quality control method.
Watch this video on PCB X-ray inspection:
What Are SMD Resistors?
SMD resistors are very crucial SMD components of SMD PCB assembly. They have a rectangular shape. SMD resistors consist of an aluminum or ceramic body, a protective coat for insulation, and component contact.
There is a metallic portion at any side of the body. This area helps to place SMD resistors on the PCB surface. A narrow metal film of resistive components is applied to the body.
SMD Resistors In SMD PCB Assembly
A protective coating is used for saving SMD resistors from moisture, corrosions, etc. This covering also makes SMD resistors effective for a long time and extreme temperatures.
You need to consider SMD resistor specifications like temperature coefficient, power rating, tolerance, etc. Usually, they have around 5% tolerance due to their metal-oxide films. But, SMD resistors are not always reworkable.
What Are SMD Resistor Networks?
SMD resistors network refers to a combination of resistors. These resistors have similarities in terms of the resistor’s parameters. They are also called R-packs. SMD resistors networks reduce the time of placement by replacing discrete resistors.
SMD Resistors Networks
The most applicable SMD resistors networks are based on small outline ICs. There are usually 16 to 20 pins in a network with a maximum of 2-watt power.
What Is An SMD Resistor Calculator?
In SMD PCB assembly, an SMD resistor calculator is a system to calculate the resistance of SMD resistors. This is an absolutely easy process. You don’t require any calculation or coding systems. You just input the SMD resistor code and this calculator will show you the numerical resistance.
SMD Resistor Calculator
The SMD resistor calculator is effective for almost all popular coding systems. But, you can’t use it for custom SMD resistor codes.
What Is The SMD Resistor Package?
The SMD resistor package indicates the physical dimension of the SMD resistor used in SMD PCB assembly. You can know the length and width of the SMD resistor through the SMD resistor package.
SMD Resistors In SMD PCB Assembly
Usually, this is useful to verify the credentials of SMD PCB assembly. Here, di pensions are given in millimeters or inches.
What Are Surface Mount Tantalum Capacitors?
Surface mount tantalum capacitors are passive SMD components used in SMD PCB assembly. Here, tantalum metals are used as the anode. They have two major categories.
- Tantalum powder sintered tantalum capacitor
- Foil tantalum capacitors
SMD tantalum capacitors are highly effective in complex electronic applications, communication technology, the defense industry, etc.
SMD Tantalum Capacitors
SMD Tantalum capacitors provide a high dielectric constant. Again, they use effective tantalum powder which makes SMD tantalum capacitors deliver a high capacitance with respect to volume. So, these capacitors are small in size.
Besides, SMD tantalum capacitors operate in a wide temperature range with commendable effectiveness. These electrolytic capacitors deliver better performance at high frequency.
Most noteworthy, Ta205 used in the anode of the capacitor, has impressive durability against concentrated solutions of acid or base. So, SMD tantalum capacitors provide low loss. In addition to these, high thermal resistance also promotes their reliability.
Moreover, high insulation, corrosion resistivity, long service life, minimum leakage current, etc turn them into a widely used SMD component for SMD PCB assembly.
What Are Tubular Passive SMD Components?
Tubular passive SMD components are also named by MELF( Metal electrodes leadless faces). They have a difference from the other passive SMD components. Tabular passive SMD components are applicable in jumpers, diodes, tantalum capacitors, resistors, etc.
Tubular Passive SMD Components
Usually, passive resistive components are placed away from the PCB surface in SMD PCB assembly. But, tubular passive SMD components have an advantage in this case due to their shape.
The cylindrical shape enables tubular passive SMD components to be placed nearby the surface of PCB in SMD PCB assembly. Tubular passive SMD components save cost as well.
What Is Resistor SMD Code?
SMD resistors have a miniature size. So the resistor color band can not be marked on SMD resistors. That’s why resistor SMD code comes into place.
The most popular resistor SMD code systems are
- 3 or 4 digit system
Now, we are going to explain these codes to you.
3 or 4 digit system
Here, the starting two or three numbers refer to the quantitative value of the resistance and the last number is a 10’s multiplier. If the resistance is below 10 ohms, this code contains an “R” letter. This letter specifies the placement of decimals.
Let’s have a look at some codes.
This is the “Electronic Industries Alliance” system. EIA-96 is applied to find the more precise value of resistance. This SMD resistor code system follows the E-96 series where the resistance tolerance is 1%.
You also need to follow some codes from the E-96 series for the first two digits. The third digit is the multiplier.
SMD Resistor Code
Let, the SMD resistor code is 39B.
Now, 39 refers to the resistance value of 249 ohms. Again, the third digit B indicates that the multiplier is 10.
The resistance=249×10𝛀± 1%
So, the maximum and minimum value of resistance is 2514.9𝛀 and 2465.1𝛀 respectively. You need to follow the system prescribed by the manufacturer.
What Are SMD Codes?
SMD codes are some specific markings on SMD components. You can identify the type of SMD components used in SMD PCB assembly through SMD codes. Such as, SMD resistor codes are applied to calculate the resistance.
There is a chart of SMD code. If you search the SMD code in that chart, you will find the SMD components type.
How To Identify SMD Components In SMD PCB Assembly?
You have to follow some rules to identify SMD components in SMD PCB assembly.
- Firstly, identify the number of pins in the specific SMD package.
- Then, note the dimension of SMD components. You can check the dimension with the manufacturer’s datasheets. Again, you will find the dimension from the
- Identify the SMD code of the components and manufacturer logo.
- Now, you can identify SMD components in SMD PCB assembly. You just need to check the pin number, SMD code, etc in the datasheet of the SMD PCB manufacturer.
- If these rules don’t work, then you can desolder the SMD component or measure the electric potential at the pin through a multimeter. This reverse process is effective to identify SMD components in SMD PCB assembly sometimes.
SMD PCB assembly is the best option for experiencing the optimum output of PCB manufacturing. It combines efficiency, rapid speed, and cost-effectiveness of PCB. You can enjoy the worthwhile performance of electric circuits with SMD PCB assembly.
PCBMay provides you a one-stop SMD PCB assembly service. In this FAQ guide, we have made an effort to explain all queries about SMD PCB assembly in simple words. We hope that you can enjoy the excellence of SMD PCB assembly.
Contact us for anything related to SMD PCB assembly. Stay tuned and be safe.