The relationship between the diameter of the hole and its length. When a manufacturer states that their production has an “aspect ratio†of 8:1 it means, for example, that the hole’s diameter is 0.20 mm in a 1.60 mm thick PCB.
For HDI structures, a suitable aspect ratio for micro via is normally 0.8:1, with 1:1 preferable for ease of plating.
What is the “aspect ratio�
August 12th, 2016What are the ideal operating temperatures of both ceramic PCB and MCPCB?
August 12th, 2016Normally working temperature of MCPCB is <130℃, better less than 100C, dielectric layer in MCPCB is the bottle neck for high temperature, as the Tg value of that layer is only 130℃
Ceramic PCB can be: -50℃ to 800℃.
So if temperature higher than 130℃, then Ceramic PCB or High Tg PCB (but only around 170C) is good choice.
10 th anniversary-EBest Circuit (Best Technology) Co, Limited
July 1st, 2016EBest Circuit (Best Technology) Co, Limited, establish on June 28, 2006, is a Hong Kong registered company that focused on MCPCB, FR4 PCB, Ceramic PCB, Special PCB such as Heavy Copper (up to 20 OZ), and PCB assembly service. EBest Circuit (Best Technology) has been established for ten years, and has been better and better, hope we can help you more in further.
Following information is the activity that our Sales Department celebrate the 10th for EBest Circuit (Best Technology) Co, Limited.
Couple photos at the seaside
Review the History of EBest Circuit (Best Technology) Co, Limited
The founder Peter share the history of EBest Circuit (Best Technology)
Perfect attendance award for Coco
We have a good team to help you all about PCB, so don’t hesitate to contact us if any questions, we are always here for you.
10th anniversary gift from EBest Circuit (Best Technology) Co., Limited
June 23rd, 2016My dear friend,
It is really our honor to cooperate with you in these year. We would like to advise you that June 28th, 2016 is the 10th birthday of our company. To thank you for your sincerely accompany and long-term cooperation, we are willing to send you some gifts, at the same time, celebrate the 10th anniversary with you. All of them are customized for you by the EBest Circuit (Best Technology) Co., Limited, only hope you could enjoy them and be able to cooperate in the future. The following information is to help you know more details about our gift.
First, the backpack:
This backpack looked small, but it has a very excellent performance.
Features:
1.Durable, compact and portable.
2.Made of high quality dacron, durable and water resistant. Provide strengthen and long-lasting performance with minimal weight.
3.Light weight and roomy, a space saver, folds into zippered inner pocket to fit anywhere, unfolds from pocket to backpack and our company logo “BEST technology” is invisible after opening , Good solution for trip.
4.The reflective cloth, will be bright when the the reflective cloth is under lights at night and make the backpack more conspicuous to provide an extra protection of security.
5.Multi-compartments: a classic shape with several pockets for storage and organization: A roomy main compartment, two front zipper pockets to hold small accessories, one internal security zippered pocket for valuable items and two side pockets for water bottle or umbrella.
The Backpack
The Backpack
Second, the sports armband:
Even though this is a small mobile phone sets, when you going sport in outdoors or indoors, you could put your phone into the phone case, to allow you do exercise and fitness better.
Features:
1.Universal running sport armband for various mobiles .
2.Durable, keeps your phone secure and protected.
3.Flexible, lightweight, smooth and soft, makes your figure cool.
4.Form-fitting design, adjustable hasp armband gives you the versatility of carrying your phone in a variety of ways.
5.Clear, play-through mask design gives you full protection and total access to controls.
6.Water resistant design keeps your device dry, washable.
Sports Armband
Sports Armband
Third, the small wallet:
Features:
1.Water resistant , durable, compact and portable.
2.Can be used both as purse and shoulder bag.
3.Smart and portable, offer good solution for your smart phone and important small things when running, hiking, climbing or doing anyoutdoor sports.
Small Wallet
All of the three goods are customized for you by the EBest Circuit (Best Technology) Co., Limited. Hope you could enjoy them and we always are able to cooperate in the future.
Happy Mother’s Day
May 9th, 2016It is Mother’s Day last Sunday, and happy mother’s day to all ma ma.
There are six mothers in our Marketing Department, and they are very beautiful mothers with good staff. Wish them a happy mother’s day.
So beautiful flower, so beautiful mothers.
If you would like to know more details for Mother’s Day, you can check it on Wiki, and here is a quick portal to help you.
You can click to know or order PCB, we are always here for you.
Does all kinds of PCB in one panel and combine them together with SMT are available ?
April 22nd, 2016Yes, we produced all kinds of FR4 PCB in one panel and also combine two kinds FR4 PCB together with SMT so far.
Please check the following pictures to know more detail.
- We put all kinds of boards in one panel to produce, after finish production and separate the boards, you can get several FR4 PCB.
Different design in on panel
Different design in one panel
- We produced the bare board separately and combine them with SMT.
We provide turnkey assembly service, so don’t hesitate to contact us if you have any questions about PCB manufacturing and assembly.
Protected: LLS-CB2A-6-PCB(BPM10026-B)&LLS-CB2A-12-PCB(BPM10025-C)
April 14th, 2016How to arrange the shipment by Sea or Air?
April 8th, 2016Normally, we send the goods to customers by Express. But it’s only for a small quantity and light weight. If mass production, the quantity always big and with heavy weight. if still by Express, the shipping fee would be very high. It’s no economy.So we will choose to ship out by Sea or By air.
- packed all the goods and making PL & CI.
- Booking the shipping space, get the S/O, arrange the truck to pick up the goods and delievery to relatively port or airport.
- Prepare the export customs files and do the customs clearance, files include declaration form, PL, CI,contract, Proxy and others customs needed.
- Goods boarded the plane or sea, get the B/L, making import clearance files, including C/O,FA,FB,FE etc. Provide this files to consignees or their agent.
- Consignees or their agent do the import clearance, pay the import fee, then to get the goods.
It is need about 4-7days to completely the process by air, 8-35 days by sea, depend on the Place of Delivery.
As PCB manufacturer we can provide turnkey and door to door service, meanwhile we also can help you if you have any shipping questions.
Why the DCB ceramic PCB surface easy yellow during the production?
April 8th, 2016We always see the yellow surface in the DCB ceramic PCB surface although it does not affect the function, but looks unbeautiful. In order to strongly combine the copper with ceramic substrate, especially when the copper is little, the exposed more substrate we need to do a special sinters process under appropriate high temperature, so it caused.
It’s unavoidable, we need to check and choose the better to ship out.
What will cause the solder mask layer blister and fall off?
April 8th, 2016Some customers may get PCB that includes blister on the solder mask layer, even the solder mask layer fall off. As PCB manufacturer, we will let you know what cause it and how to prevent on PCB manufacturing process. Please read the following information but don’t hesitate to contact us if you need more help.
- The surface of copper is not clean and oxidation in previous processing. It need to strength the surface finishing of the boards and ensure to dry off the boards in previous processing.
- The film was underexposed. It need to determinate and adjust the exposure energy of the boards.
- The insufficient curing. It need to to check the heat uniformity of the dryer oven and control the curing temperature and time of boards.
- Improper proportion of boards’ink. Pay more attention to the ink’s proportion when mixed.