The definition of Buried Vias PCB manufacturing

The definition of Blind holes PCB manufacturing

Blind holes start on an outer layer but terminate on an inner layer.

The definition of Buried Vias PCB manufacturing

Buried Vias exist only between inner layers but do not begin or terminate on an outer layer.

The divided of Blind & Buried vias PCB manufacturing

Blind & Buried vias can be divided into two kinds, mechanical and laser.
Those two kind PCB holes is diviied by the PCB manufacturing process.
If you PCB manufacturing use mechanical to produce those hole,it’s named mechanical hole.

The benefit of Blind & Buried vias PCB manufacturing

Blind and buried vias help to reach PCB density by allowing features and lines to be designed above or below them without making a connection.
Lots of fine pitch BGA and flip-chip component footprints do not allow for running traces and through.
Instead, the blind and buried vias will only connect those layers that are required to have a connection in that specific area, allowing for PCB real estate space savings.

The use area of Blind & Buried vias PCB manufacturing

Blind and buried vias PCB, also known as HDI boards, often used for mobile phones, GPS navigation, wireless product, MID. Notebook.etc.

---

8 Layer Blind Holes Printed Circuit Board
1+6+1 Stack up
FR4 1.0MM Thickness
1OZ finish Copper thickness
Immersion Gold Finish
Min Line/Space 3/3 mil
Gold Finger
Designed for Note Book

4 Layer Blind pcb
1+2+1 Stack up
FR4 1.6MM Thickness
3OZ finish Copper thickness
Immersion Gold Finish Surface Treatment
Min Line/Space 8/8 mil

---

If you want to order our PCB,please mail to jim@htdcircuit.com

Rigid-flex Printed Circuit Board definition

Rigid-flex Printed Circuit Board definition

Rigid-flex Printed Circuit Board is this kind PCB full name.
But most PCB engineers like RF PCB or Rigid-flex PCB to use.
Rigid-flex PCBs combine the advantages of rigid and flexible printed circuit boards and can take great function of several rigid boards interconnected with cables or connectors.

Cost saving of Rigid-flex Printed Circuit Board

May many PCB guys confuse about Rigid-flex Printed Circuit Board can saving cost.
Becuase most of Rigid-flex PCB manufacturing cost were higher than 1 layer PCB or multi-layer PCBs.
Depite the fact that rigid-flex PCBs cost higher than rigid PCBs, it is the more economical solution. Cost savings can be realized with a lower number of components and lower assembly cost.

Reliability of the Rigid-flex Printed Circuit Board

You know the process of RF PCB manufacturing complex than 2 layer PCB board.
And the reliability issue will more conside in very RF PCB manufacture process.
Besides, the reliability of the final product will be increased as well because of rigid-flexible pcbs.

Widely use area of RF Printed Circuit Board

Rigid-Flex PCB can be found in mobile communications, portable computers, computer peripherals, PDAs, digital cameras.
We have experience in producing rigid-flexible PCBs.
If you want to compare our RF PCB,please let me know or mail to jim@htdcircuit.com

---

Description: 4-layer rigid-flexible
Base laminate materials: FR-4 and polyimide
FPC thickness: 0.25mm
Rigid pcb thickness: 1.60mm
Minimum hole diameter: 0.2mm
Minimum line space: 4mil
Minimum line width: 4mil
Copper thickness: H/H/H/H oz
Surface finish: immersion gold

Description: 2-layer Flexible PCB+4 layer Rigid PCB
Base laminate materials: FR-4 and polyimide
FPC thickness: 0.25mm
Rigid pcb thickness: 1.20mm
Minimum hole diameter: 0.2mm
Minimum line space: 4mil
Minimum line width: 4mil
Copper thickness: H/H/H/H oz
Surface finish: immersion gold

---

The definition of Flexible Printed Circuit Board

The definition of Flexible Printed Circuit Board

Flexible Printed Circuit Board is a printed circuit made of a flexible insulating substrate, with the advantages that rigid printed circuit board do not have.

The advantages of Flexible Printed Circuit Board

For example, it can be freely bent, winding, folding, in accordance with the layout of space requirements of any arrangements to achieve the integration of components assembly and wires and move freely in 3D space and telescopic.

The benefits of Flexible Printed Circuit Board

FPC can be greatly reduced the volume of electronic products for the needs of the development of electronic products to high-density,miniaturization, high reliability and direction.

The use area of Flexible Printed Circuit Board

Therefore, FPC has been widely applied in the field of aerospace, military, mobile communications, portable computers, computer peripherals, PDAs, digital cameras and other products.

---

Number of layer: single Sided Flexible PCB
Terminal contact: single copper double access
Copper foil: 1 oz finished thickness
Base layer and cover layer: 1 mil PI and 25 um adhesive
Surface treatment: electrolytic nickel-gold plating
RoHS directive-compliant
Min Hole Diameter: 0.30mm
Min Track/Space: 5/5mil

Number of layer: single Sided Flexible Printed Circuit Board
Copper foil: 1 oz finished thickness
Base layer and cover layer: 1 mil PI and 25 um adhesive
Surface treatment: electrolytic nickel-gold plating
Gold Fingers Connector
Min Hole Diameter: 0.30mm
Min Track/Space: 5/5mil
RoHS directive-compliant

---

If you want place our FPCB,Please mail to info@htdcircuits.com

You should know definition of multilayer PCBs

This post will discuss multilayer PCB about five parts below:
–You should know definition of multilayer PCBs
–Why we need design multilayer PCBs?
–Multilayer PCB manufacturing process very complex
–History of the multilayer PCB manufacturing
–Use area of the Multilayer PCB manufacturing

You should know definition of multilayer PCBs

Printed circuit board with four or more circuit line is called multilayer pcbs or multi-layer printed circuit board.

Why we need design multilayer PCBs?

The quick development of electronics has high requirement to printed circuit board, which single sided or double sided
printed circuit board cannot reach, thus, multilayer pcbs were designed.

Multilayer PCB manufacturing process very complex

Production of multilayer inner graphics in place first, and then made single-sided or double-sided substrate etching printed and included in the specified layer, and then by heat, pressure and be bonded, as to the subsequent drilling is the same and double-sided plated through hole method.

History of the multilayer PCB manufacturing

These basic methods of production and construction method dating back to the 1960s, not much changed, but with the materials and process technologies (for example: lamination bonding technique to solve drilling, glue residue, the provement of the film) become more mature, the accompanying even more diversification to the characteristics of the multilayer.

Use area of the Multilayer PCB manufacturing

Mutilayer PCB are widely used in high technology project such as computer,industrial control,telecommunication, power supply,digital products, medical, automobile, aerospace and so on.

---

Multilayer pcbs (4 layer)
FR4 1.60mm board thickness
1OZ finish copper
Immerson Gold finish
Min track/space: 8mil
Min hole size: 0.23mm
Green Solder Mask
Outline: Routing

Mutilayer Printed Circuit Board (6 Layer)
FR4 2.00mm board thickness
1OZ base copper thickness
Immersion Gold surface treatment
Min line/width: 10mil
Min Hole size: 0.27mm
BGA
Complicated Routing Outline.

---

If you want place your 2 layer PCB from us,please mail to info@htdcircuits.com

Advantage of Manufacturing 2 layer PCB

Advantage of Manufacturing 2 layer PCB

If you have read our article about 1 layer PCB,you may know the 1 layer use area very small.
But this is not ture for 2 layer PCB.
Double sided pcbs, common in both production and prototype circuits, allow a higher density in components and make layering of tracks an easier process.

2 layer PCB manufacturing process is very easy

Compared to multilayer pcbs, double layer pcbs do not need lamination, but need plating in order to reach through hole function.So the 2 layer PCB manufacturing process step become very easy.

PCB manufacturing detail process introduce

Double sided printed circuit boards are made with a substrate of non-conductive material, over which a layer of copper is placed on top and the bottom of it, and in the case of double sided boards, the copper is also layered on the bottom side of the substrate.

Two kind PCB hole types of 2 layer PCB manufacturer process

The circuits on top and bottom layers are connected by a “bridges” called the guide hole (via), which is also called plated through hole (PTH), and the hole without connecting function is called NPTH holes because there is no metal in hole.

---

2 Layer pcbs
FR4 1.55mm board thickness
2oz finish copper
Lead Free Hasl surface finish
Min Track/Space: 8mil
Min hole size: 0.18mm
Green Solder Mask

Double Sided Printed Circuit Board
FR4 1.60mm Board Thickness
1OZ base copper thickness
L/F HAL Finish surface treatment
Min Line/Width: 6mil
Min Hole Size: 0.25mm
Yellow Solder Mask

---

If you want place your 2 layer PCB from us,please mail to info@htdcircuits.com

You should know 1 layer PCB definition

Today we are going to discuss a simple PCB manufacture definition:1 layer PCB definition.
1 layer PCB definition may ignored by most China PCB industry guys.
So Jim want to 5 parts of 1 layer PCB definition below to introduce:
–You should know 1 layer PCB definition
–Stack-up of 1 layer PCB
–1 layer PCB manufacturing process introduce
–1 layer PCB use area
–1 layer PCB circuit board showroom

You should know 1 layer PCB definition

The Single-Sided PCB is the most basic printed circuit board and track is only available on one side of the insulating substrate.

Stack-up of 1 layer PCB

You may confuse stack-up of 1 layer PCB.
In fact we just want to show you the both side of 1 layer PCB.
The side containing the circuit pattern is called the solder side while the other side is called the component side.

1 layer PCB manufacturing process introduce

The single-sided pcbs are manufactured originally by the print and etch method, however, with development of technology, the die
cut technique of using a die (either photoengraved or machine-engraved) that carries an image of the wiring patter are now widely
used to reduce the production cost.

1 layer PCB use area

Single-sided pcb can be seen in all kinds of electronics, like torch, led lighting, automotive electronics and so on.
But now more and more electornic product become more smart,1 layer PCB use less than before.

1 layer PCB circuit board showroom

HTD 1 Layer pcbs
FR4 1.0MM thickness
1OZ finish copper
Immersion Gold Surface Finish
Min Line/Space: 10mil
Min hole: 0.30mmm
Red Solder Mask

HTD Single Sided Printed Circuit Board
CEM1 1.60 MM board thickness
1OZ Base Copper
OSP surface treatment
Min hole: 0.2mm
Min Track/Space: 20mil
Green Soler Mask


If you want order PCB from us,mail to info@htdcircuits.com

How to judge Simple PCB and Complex PCB?

Simple PCB and Complex PCB Discuss,
We will separate five parts to you.
-Single or double layer PCB product introduce
-Developing single or two layer PCB reason
-Multi-layer PCB is develop from single PCB circuit board
-You should know the theory of multi-layer PCB manufacturing
-The Common of multi-layer PCB and the double layer PCB

Single or double layer PCB product introduce

Single sided and double sided boards, often called n-pth and pth boards, still represent a significant percentage of the printed circuit boards (also known with the acronym pcbs) produced every year worldwide.

Developing single or two layer PCB reason

Anyway more and more pcbs, independently of their sector of application, are nowadays manufactured using a technology known as multilayer technology.

Multi-layer PCB is develop from single PCB circuit board

The multilayer technology essentially introduces a vertical solution approach to the problem of the conflicting requests for extremely high number of interconnections and reduced sizes in a single printed circuit board.

You should know the theory of multi-layer PCB manufacturing

The interconnections among the active and passive components that are (typically) mounted on the top and bottom of the printed circuit board are realised in some internal layers that are pressed together and that can be then connected the one to the others (through blind and buried vias) and to the superficial (external) layers of the board (drilling through all vias).

The Common of multi-layer PCB and the double layer PCB

Basically, each internal layer of a multilayer printed circuit board is essentially a double sided pcb, but with no solder and finishes, and its manufacturing process requires the same steps of a standard double sided pcb, with the only exceptions mentioned above.

If you want order PCB,place your PCB mail to info@htdcircuits.com

Trust PCB manufacturer from virtual tour

Do you know the really PCB design process?
-Take the FULL virtual tour go to www.htdcircuits.com/online-factory/-Look our PCB design workplace virtual tour-You may find the reasons why HTD produce low cost and high quality PCBs.

-Take the FULL virtual tour go to www.htdcircuits.com/online-factory/

We want more PCB customers looking the ideally PCB Manufacturers.
But some times,this is very hard to archieve.
One reason is the location of the PCB factory.
Not every PCB customer want purchase PCB from China.
But this situation will change when shipment service develop.
Another reason is the trust betwen PCB customers and PCB manfacturers.
You know all business is build on trust.
If this issues can't handle,there were also many PCB customer didn't order PCB circuit boards.

-Look our PCB design workplace virtual tour
Trust PCB manufacturer from virtual tour

-You may find the reasons why HTD produce low cost and high quality PCBs.

If you want order our PCBs,Please mail to info@htdcircuits.com

HTD Group PCB Design workplace showroom

Do you know the really PCB design process?

-Take the FULL virtual tour go to www.htdcircuits.com/online-factory/

-Look our PCB design workplace virtual tour

-You may find the reasons why HTD produce low cost and high quality PCBs.

Circuit Board is very important to your project

Circuit Board is very important to your project

All electronic products is assembly circuit boards.
The circuit board is the foundation of our electronic products, and is the most critical component affecting long-term reliability.
Is this words find a high quality PCB manufacturer is very important.
Since most companies depend on manufacturing partners to fabricate the bare boards, we must:

Select suppliers who are capable of delivering the required level of quality

As above descript,circuit board is very important to your projects.
If you just consider the cheap price PCB manufacturers,you may pay for more money when the project have some problems.

Specify the minimum level of acceptability for circuit boards

This point may confuse some people.
Even some guy think this point is again to first tip.
To be honest,Jim also confuse at the beginning,but if you learn the detail you will change your mind.
Minimum level is doesn't equal to low quality.
So we must understanding minimum level of acceptability to PCB project cost control.
In this word,minimum level of acceptability is the low cost PCB option.

Perform checks to ensure that the boards meet the expected reliability

Last but not the least,if you have follow above two point,you may choose the low cost and high quality PCB suppliers.
But high quality is just your PCB supplier say.
How you judge the PCB quality or how to control all you purchase PCB from you China PCB fabrication is OK?
Perform checks can help you handle this issue.

On the other hand, cost is an important issue, and we don't want to impose expensive and unnecessary tests to prove the acceptance criteria. Our goal is to derive the maximum level of confidence for the minimum amount of time and expense.

When determining the level of testing, we should err on the side of caution. One mistake can cause a line-down situation that results in an inability to ship, which can create scheduling and delivery problems throughout the organization. One defective product can damage our reputation and in severe cases, de-value the company brand.

The cost of recalling or scrapping assemblies is always higher than the cost of scrapping bare boards, and the cost of scrapping bare boards is always higher than the cost of proper inspection and process controls along the way. With this in mind, a small investment up front can prevent a catastrophic failure later on.

Take the China PCB Manufacturer Front Door Virtual Tour

Normal Chin PCB manufacturer standards

This article is discuss about the China manufacturer standards. 
We will talk about: 
1.Normal China PCB manufacturer standards, 
2.PCB board quality is HTD Group first task, 
3.Update your PCB design for your PCB project, 
5.HTD Group is the best choose of your china PCB manufacturer.

Normal Chin PCB manufacturer standards

We manufacture Printed Circuit Boards that exceed international pcb standards. 
Some China PCB manufacturer standards like TS16949-2009,BCC ISO14001,REACH certification, ISO9001and so on. 
But our HTD Group manufacturing PCB not only referenced those PCB standard,but also referenced other high class PCB manufacturing standard. 
That why we have many high class special PCB customers.

PCB board quality is our first task

Many China PCB manufacturers say they price is the biggest advantage. 
If you think about the ads of PCB manufacturers,all PCB supplier will say they can provide low cost PCB,but none of them care about PCB board quality.or not they first PCB manufacturing task. 
If you have a look our virtual tour will find our PCB board quality is our manufacturing process first task. 
Manufactured under stringent IPC standards, our Printed Circuit Boards will prove to be a value add to your electronic equipment’s success.

Update your PCB design for your project

We continues to keep abreast with the latest happenings in the Printed Circuit board industry, so we can offer you a product that is exceptional yet within your price range. 
In other words,you also update your PCB design for your project. 
Because some of the PCB design many increase your PCB budget.

With superior technical capabilities we are well equipped to handle unique client needs.

Your will get what kind PCB board

Our Printed Circuit Boards include: gold plating PCB, immersion Gold PCB, hot air leaving PCB, PCB with gold finger, PCB with blind and buried holes, aluminum based PCB, PCB for high frequency, ultra-thick PCB, Ultra-thin PCB, PCB for power supply, PCB with heavy copper, PCB with impedance control.More detail go to PCB board showroom.

HTD Group is your best PCB manufacturer choosing

Choosing our high quality PCB as your PCB manufacturer will satisfy you even in the long run. Whether it is in performance or price our Printed Circuit boards outshine the rest. 
As a front-runner in the PC board design industry, we have proven to be a PCB manufacturer that is both competent and cost effective. 
We excel in providing you with superior PCB boards to meet your exact requirement. As a PCB manufacturer that has an in-depth understanding of the Printed Circuit Board domain, we have the competence to offer you quality boards in the specification and quantity that you desire.