Merry Christmas


Christmas Day is a holiday observed generally on December 25 to commemorate the birth of Jesus, the central figure of Christianity. It’s a national holiday in western countries resemble the Chinese New Year. But now, it has grown steadily over the past few centuries in many regions of the world.

Christmas means a joyful time of year. It brings friends and family together. Everyone smells joy in the air and everyone is celebrating Jesus’ birthday. It’s a matter of opening gifts, you can get a lot of presents from “Santa Claus”.

Christmas Day is the time spending with your family, seeing all the beautiful lights, decorating the tree, eating all the food you can eat, send gifts to each other. How Happy!

The Christmas atmosphere in China is getting more and more strong these years. Many family and supermarkets also have a decorated Christmas tree. People sent gifts and cards to show their blessings . All Peole are doing expect for the new year .

Christmas to me means when you think of people that love you and the people who are loved by you, not just all the presents and the decorations. It’s all about giving and recieving and spending time with your loved ones.

With the Christmas Day approaching, Best Technology take this opportunity to celebrate a fruitful results in 2010 and wish good luck and success in 2011 .

Warm greetings and best wishes for Christmas and the New Year!
Wishing everybody peace, joy and happiness through Christmas and the coming year.

How to Send and Receive Money via Paypal

In previous article on Nov 2006, we started to accept the payment via Paypal with your credit card (refer to this: ) Now more people want to know how to send and receive the money via Paypal.

I think people can find the answers in help center of Paypal but seemed people like to see the process in pictures. As preverb says: A picture worths thousands of words. So I wrote this artcile and hope this will help people understand it.

A) Send Money to Paypal A/C

Send money to your customers, your friends is very easily. Login your A/C and click “Send Money” on top position and you will see two opinions: “Send money online” and “Pay for eBay items”. I take a picture showing “send money online”.

Send Money via Paypal 1

Just input the A/C No. (Actually it’s an Email address), amount of money and purpose of this fund, and click “Continue”. You will see a new page to confirm the A/C No, amount:

Send Money via Paypal 2

You can also write a message to receipt, limited to 300 characters.

Send Money Via Paypal

After checking everything is right, then confirm it and money will be sent out.

Very easily? Yeah! Next time let me show how to receive the fund your customers or friends send to you.

I think you’ll like it, Paypal is very convenient for small amount of money transfering, very fast (almost immediately), free to send money, and a little receiving fee (most of time, none).

So my friend, if you order flex circuit, rigid-flex, or any circuit boards, with our company (Best Technology), small amount (less than $500), you can choose this way.

All right. Is everything clear for you now? Any question, write email or leave message here, we will answer it very fast.

Dragon Boat Festival

The Dragon Boat Festival, also called the Double Fifth Festival, is celebrated on the fifth day of the fifth month according to the Chinese calendar. For thousands of years, the festival has been marked by eating zong zi (glutinous rice wrapped to form a pyramid using bamboo or reed leaves )and racing dragon boats.

The festival is best known for its dragon-boat races, especially in the southern provinces where there are many rivers and lakes. This regatta commemorates the death of Qu Yuan , an honest minister who is said to have committed suicide by drowning himself in a river.

Qu Yuan

Qu Yuan

The people of Chu who mourned the death of Qu threw rice into the river to feed his ghost every year on the fifth day of the fifth month. But one year, the spirit of Qu appeared and told the mourners that a huge reptile in the river had stolen the rice. The spirit then advised them to wrap the rice in silk and bind it with five different-colored threads before tossing it into the river.

During the Duanwu Festival, a glutinous rice pudding called zong zi is eaten to symbolize the rice offerings to Qu. Ingredients such as beans, lotus seeds , chestnuts , pork fat and the golden yolk of a salted duck egg are often added to the glutinous rice. The pudding is then wrapped with bamboo leaves, bound with a kind of raffia and boiled in salt water for hours.

The dragon-boat races symbolize the many attempts to rescue and recover Qu’s body. A typical dragon boat ranges from 50-100 feet in length, with a beam of about 5.5 feet, accommodating two paddlers seated side by side. Dragon boat races in long, thin, canoe-like boats often sporting the head of a dragon on the prow, are a southern Chinese tradition.

Zongzi

Zongzi

Except eating zong zi and dragon-boat races Chinese people also cleaning the house on that day. The Dragon Boat Festival is also a cleaning festival. It is traditional for people to clean their houses on this day. It is also considered important to put up some leaves of mugwort or cattail on either side of the door, spray realgar water, and drink realgar liquor. These things are thought to prevent rot and kill bacteria to stop the spread of diseases.

Experts say, the Dragon Boat Festival custom began in China, the spring and autumn and warring states period, has more than 2000 years of history. But today, Dragon Boat Festival is still a very popular and grand festival among Chinese people.

The knowledge of printed circuit board via

                                     via

                                  The basic definition of via

As is known to all, via is one of the important parts of multilayer PCB. The cost of drilling usually makes up 30%~40% of the cost of PCB manufacture.

Simply speaking, every hole on PCB may be called via.

Functionally, via can be divided into two types: firstly, used for electro-connection among layers; secondly, used for fixing components.

Technically, it may also be divided into three types: blind via, buried via and though hole. Blind via is located on the top and bottom surfaces of the PCB, deep and used for connection of top traces with the inner layer traces below.

Buried via is the connecting hole which is located in the inner layer of the PCB and won’t extent to the surface.

Through hole goes through the whole PCB, which is used to realize inter-connection or used as components mounting position hole. Due to the simple technique and low cost, most of PCBs use it rather than the other two via.

2010 Spring Festival Notice

In the past 2009, although the word have went through economical crisis, we still have great achievement. We should take this opportunity to thank our friends, customers, suppliers, colleague, and everyone supporting us in 2009.

Now it’s time to back home to enjoy the merriness of get-together with family, friends, the one you loved and beloved. Here are our Lunar New Year (Spring Festival) holiday arrangement:

Feb 7th~Feb 21st, 2010: Closed

Feb 22nd, 2010: Re-open

You can contact our sales representative to discuss everything, but samples, or manufacturing will stop. Our guys is anxious to back home every hour. ^_^, we think you should understand that. ^_^

Thanks everyone and wish business in 2010 will be much more prosperous.

Enjoy the happiness of everyday!

Yours Sincerely,

Best Technology Staff

www.bestfpc.com

The basic knowledge of PCB(3)

Today we will continue expanding some basic knowledge of PCB:

3. Components encapsulation technology

(1) Through hole technology

It means we mount components on one side, and solder the pins on the other. The disadvantage of it is space consuming. In fact, theirs pins take up space of both sides. While the advantage of it is good construction, which can bear pressure.

(2) Surface mounted technology
it means pins are soldered on the same side as components. We don’t have to drill holes  on PCB and don’t have to solder every pin. The advantage of SMT is that the components are more compact and cheaper than those in THT.

                                                smt2 

4. Gerber files:

Usually it comprises the layout plan of signal, ground, power, solder mask, silk screen, and drilling layout plan, etc.

                                          gerber file

5. Manufacture steps
choose base material, then use subtractive transfer to show the artwork on metal conductor.

The above explanation is only the most basic   information, if you want to know more, please to go our website: http://bestpcbs.com/products or contact me at Iris@bestfpc.com.

We are happy to help you clear all your questions!!!

The basic knowledge of PCB (2)

2. The classification of PCB

 (1) Single sided PCB

Single sided board means the conductor pattern appears only on one side. Because single sided PCB has many strict limits. On trace design, only circuit at early stage use this kind of boards.

(2) Double sided PCB 

Double sided board means the conductor patterns appear on both sides of the board. However if we use the conductor patterns on both sides, there should be proper circuit to connect two sides. The bridge between the circuits is called via. Those vias are plated with metal, such as tin, copper, gold, etc. Because the area of double sided PCB is two fold of the area of single sided, and the conductor pattern can cross with each other, so it suits to be used on more complex circuits.

(3) Multi-layer boards

In order to enlarge the area of conductor pattern, multilayer PCB uses more single or double boards. It uses several piece of double sided boards, and a dielectric layer is put between every layer of boards. The layers of one PCB represent the layer of conductor patterns. The amount of the layers is always even number. Technically we can make PCBs up to 100 layers.

 For via, if we use it on double sided PCB, the whole boards will be drilled. While on multilayer PCB, if you just want to connect some traces, via may will waste trace space of some layers. Then we use buried vias and blind vias to solve this problem, because they are only drilled through several layers.

a. Buried vias only connect inner PCBs, so we can’t see them from the surface.

b. Blind vias connects several layers PCB with surface PCB.

In multilayer PCB, the whole board directly connects the ground line and power (used for preventing affection of the transmission signals on the signal). So we divide layers into signal, power, or ground. If the components on PCB need different power supply, this kind of PCB would have more than two layers of power and wire layers.

 mpcb-22ss-web missionstatement  

 

mcpcb-1ss-web

The basic knowledge of PCB

I saw some basic knowledge about PCB, today I summarized it and I want to share with you now.

1. Definitions:

For standard PCB, it is the combination of bare board and components on it. While for bare board PCB, it is called printed wiring board. We usually call it PWB.

(1) Traces:

The base material of PCB is comprised of dielectric, heat insulation, uneasy to bend materials. On its surface, we can see thin traces, its material is copper. Originally the copper covered the whole PCB. Parts of it were etched during the process of production. Those parts left become net-like thin traces, which are called conductor pattern, and are used to provide circuit connection for components on PCB.

(2) Name of two side:

On most common single sided PCB, components are on one side, conductor pattern is on the other side. Then we would need to drill holes on the board, so that pins can put through the board to the other side. Therefore, the both sides of PCB are called component side and solder side.

(3) Gold finger:

Gold finger is functioned to connect two PCBs. We usually insert the gold finger of one PCB to the proper slot of the other PCB. 

(4) Solder mask and silk screen:

The green or white oil on PCB is called solder mask, which is functioned as dielectric protective layer, can protects copper traces and also can prevent components to be soldered at incorrect place.

On the dielectric layer, a layer of silk screen will be printed. Some words will be printed to show the position of those components. It is also called legend.

FPC Application Market Analysis

The market of FPCs applied on hard disk still can secure a place, although its growth rate is lower. The speed of NAND replacing the hard disk won’t be so fast. At present in the times of information explosion, the quantity of storage increases rapidly. The hard disk can corresponds very well. However NAND doesn’t work. Although NAND’price reduces quickly too, it can’t match the increasing speed of mainstream storage density. There are only 6 manufacturers of hard disks, and the quantity will reduce; while the number of FPC manufacturers is much larger. They have little space to discuss the price. Meanwhile, the patterns of FPCs needed for hard disk are so unitary. All of those determine that the growth of FPC in hard disk market is strong.

The situation in optical drive industry is similar to that in  hard disk industry, thanks to the increase of Blue Ray. The market of FPC in printer is also relatively stable. The electronics of automobiles is obvious too. On the occasion of using ECU, FPCs are always needed. They are of high reliability and space superiority.

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FPC Application Market Analysis

missionstatement

flx24       As the development of high technology products, FPC becomes more and more popular. Its application becomes wider and wider. Therefore, let us analyze its market prospects.

 Industry research institute Shuiqingmuhua published “global and China circuit board industry research report of 2009”. The FPC industry emerged in 2002, developed very quickly in 2003 and 2004, and went into the stage of price struggle. In 2006 and 2007 the FPC industry has been in downturn, however in 2008 it began to recover. Even the economy crisis didn’t get in the way of the recovery of FPC industry. On one hand, the price reduction stimulates the demand of FPC; on the other hand, the demand for lighter, thinner, shorter, smaller and high reliability products also creates the room of using FPC. At the same time, the FPC manufacturers which went through price struggle and survived had all faced great pressure. They have already been familiar with the cost control and dealing with stress, and won’t be afraid of the arrival of economy crisis. Cell phone is the critical motive for FPC market enlargement, especially intelligent cell phone and high-end cell phone. The growth of consumer electronics field is also favorable. In consumer electronics such as notebooks, PND, digital camera, DV, LCD TV, plasma TV, media player, frequency of using FPC will increase as its performance and its strive for ultra-thin volume. Notebook and flat panel TV use LED backlights a lot. FPC is the most common used way in which LED connects to the main circuit. Even in 2008 and 2009 it still has great potential to grow. The swing joint between notebook screen and motherboard has great probability of using FPC. (Continued)