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Shenzhen Uniwell Circuits Co.,Ltd
Multilayer Buried Vias Circuit Board

Multilayer Buried Vias Circuit Board

Multilayer buried vias circuit board 1.company information Uniwell Circuits Co., Ltd, was founded in Shenzhen, China in April, 2007. Uniwell Circuits is a high-tech enterprise specializing in design, development, manufacture and sales of high precision double-sided & multilayer PCBs (Printed...

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1.Product describe

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Specification:
Layer: 6  
Board Thickness: 1.6 mm
Surface treatment: immersion gold.
Material: FR4 TG170.
Min line width/line distance:8/5mil.
Special technology:buried via

Buried vias are plated connections between the inner layers of a multi-layer PCB that do not emerge on either of the outer layers. Buried vias are created by drilling and copper plating the inner layer core (pairs) of a multi-layer PCB in the same way as a standard 2 layer or indeed for a multi-layer plated through hole PCB. There is no problem with the depth of the buried via because at the time of plating, the hole is open at both ends and the plating chemistry can freely penetrate. If the buried via PCB is designed with buried vias passing between even numbered pairs of inner layers,construction is straightforward. It is not recommended to design buried vias passing between odd numbers of inner layers. 

Sequential build up of multi-layer PCBs using multiple printing, bonding, and plating sequences allow complex inter-connection structures to be built.
If careful consideration is taken with the practicalities of fabrication, then blind vias, buried vias and through hole vias may be combined on the same PCB.
Buried vias are less costly to manufacture than blind vias, but as a guide, the use of buried vias is unlikely save costs unless the overall layer count is reduced by at least 4 layers.
Uniwell produce a wide variety of buried via pcbs. Ask us to quote.

2.Company information
Uniwell Circuits Co., Ltd, was founded in Shenzhen, China in April, 2007. Uniwell Circuits is a high-tech enterprise specializing in design, development, manufacture and sales of high precision double-sided & multilayer PCBs (Printed Circuit Board) focusing on quick turn, prototype, medium and large volumes. Uniwell Circuits has also met the highest international manufacturing standards by being approved for these quality certificates: ISO9001, ISO14001, TS16949. We are UL certified for single sided, double sided and multilayer PCB production, and adhere to all of the requirements for IPC and ROHS standards.

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3.Quality system
Offering high quality products is our pursuit.

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4.Customers distribute
With 10+ years’development ,our products are exported to Mainland China, Taiwan, USA, Japan, Russia, Germany, Switzerland, Sweden, UK, Finland, France, Holland, Italy, Poland, Denmark, Australia, Brazil, Singapore, Thailand, and Malaysia.

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5.FAQ
Q: When can I get the price?
We usually quote within 24 hours after we get your inquiry. If you are very urgent to get the price, please call us or tell us in your email so that we will regard your inquiry priority. 

Q: How can I get a sample to check your products quality?
After price confirmation, you can require for samples to check our products quality. We accept 1-10 pieces or more sample order. 

Q: How long can I expect to get the sample?  
After you pay the sample charge and send us confirmed files, the samples will be ready for delivery in 2-3 days.
The samples will be sent to you via express and arrive in 3-5 workdays.
You can use your own express account or prepay us if you do not have an account. 

Q: What about the lead time for mass production?
Honestly, it depends on the order quantity and the season you place the order.  
Generally speaking, the mass production will be sent to you via express and arrive in 15-20 workdays.

Q: What file I should offer?
Gerber file (protel, power pcb, PADs file) or schematic is needed for PCB production.
Gerber file, Bom, designator are needed for PCBA production and components purchase.

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