1. Taijie Video Taijie Video TV Edition is an online video player supporting smart TV, HD set-top box and other devices equipped with Android system. The Free Mass Media Online Collection features content such as movies, televisions, serials, and variety shows from major video sites such as Youku, Tudou, QQ, Sohu, Qiyi, LeTV PPTV.
Fully aggregating 600+ live TV, the design style adopts the most popular windows8 style. It updates a large number of the latest and most popular movie programs such as movies, TV dramas, variety shows, and animations. Unique "chasing drama" function, can help users get real-time access to watch the latest updates of film and television drama, absolutely the first time to seize the moment.
Download address, http://app.shafa.com/apk/taijieshipinTV.html
2. TV home
After installing tv TV version can directly watch a variety of TV stations, live channels, etc., is definitely a good helper for smart TV! Completely free of charge, eliminating the expense of large digital TV viewing fees; program sources are jointly maintained by thousands of users, providing stable and reliable program sources at any time.
Support for custom program sources, easy access to domestic and foreign television stations, local TV stations, Internet live channels, etc., only you can not think of, you can not see; TV synchronization high-definition live broadcast, covering the vast majority of CCTV and Wei video channels, genuine source never go.
Download address, http://app.shafa.com/apk/dianshijia20.html
TV cat video is a video application. It is only for the family. It can be installed on smart TVs or smart boxes. It is currently providing millions of home users with massive on-demand video gathering of Internet major video sites, as well as CCTV/TV/local stations. Live channel and look back in 7x24 hours.
Download address, http://app.shafa.com/apk/dianshimaoshipin.html
4, vst all polymerization
VST has aggregated the content of 18 mainstream video websites in the country. It is currently the most aggregated software in the aggregation software. It is updated on a real-time basis and features unique features such as continuous pursuit and continuous playback of breakpoints. You can not only select the source and play it again, but you can also select the source and select the sharpness again during playback.
Download address: http://app.shafa.com/apk/VSTquanjuhe20.html
8 Layer PCB - Stackup & Cost & Prototype manufacture
What is 8 layer PCB?
The 8 layer PCB is a circuit board with 8 layers that are stacked firmly together with predefined and dependable mutual connections between the layers. Structure of eight layer PCB is more complicated. Nowadays, PCBs frequently have 8 to 12 layers or more, and electronics engineers know that designing for so many layers requires a well-configured layer stack.
8-layer Printed Circuit Boards are usually installed in compact equipment with strict spacing requirements, such as notebook computer motherboard, communication backplane, wearable watches, etc. Because of its complexity and high manufacturing costs, your 8-layer PCB Manufacturing should be made by reliable and experienced manufacturers. Jinghongyi PCB has been specially targeting high-end PCB manufacturing and assembly services for 8 years, providing high-quality products and services for various customers. Our advanced production line and fast response team will keep you comfortable and reassured, without any trouble, you can rest assured to place the order with us.
Typical 8-layer PCB stack up methods and guidelines
Standard stackup of 8 layer PCB looks as follows
- Signal1
- Ground
- Signal2
- Power
- Ground
- Signal3
- Power
- Signal4
Eight-layer PCB can be used to add two additional layers, or two planes can be added to improve EMC performance. Most eight-layer circuit boards are superimposed to improve EMC performance, rather than adding additional wiring layers. Compared with 6-layer circuit boards, the cost increase percentage of 8-layer PCB is less than that of 4-layer PCB to 6-layer PCB. Therefore, in order to improve EMC performance, the cost increase is reasonable. Therefore, most 8-layer boards consist of four wiring layers and four planes.
8 Layer PCB Stack up
8 Layer PCB stackup
In short, 8 layer PCB are usually used to improve the EMC performance of circuit boards, rather than increasing the number of layers.
No matter how you decide on the stack layer, it is not recommended to use an 8-layer PCB Board with six wiring layers. If you need six routing layers, you should use a 10 Layer PCB board. Therefore, the 8-layer board can be regarded as the six-layer board with the best EMC performance.
Basic Layer of Eight-Layer Circuit Board with Excellent EMC Performance
All signal layers are adjacent to the plane, and all layers are tightly coupled. High-speed signals are buried between planes, so planes provide shielding to reduce the transmission of these signals. In addition, the circuit board uses multiple grounding layers to reduce the grounding impedance.
Other forms of 8-layer PCB stackup
A typical 8 Layer PCB Stackup
0.062[8 layer PCB stackup
0.093[ 8-Layer PCB Stackup
So far, we have also clarified the cost and price differences between 6-layer PCB, 8-layer PCB and 10-layer PCB.
8 Layer PCB thickness
8 LAYER 1.6 MM STANDARD STACKUP AND THICKNESS
8 Layer Stackup - 1.6mm thickness |
||||||
| layer order | layer name | material type | material description | dielectric constant | thickness | copper weight |
| 1 | top | copper | signal | 0.035mm | 1 oz | |
| 2116 | prepreg | 4.5 | 0.12mm | |||
| 2 | inner 1 | copper | plane | 1 oz | ||
| core | 4.6 | 0.3mm | ||||
| 3 | inner 2 | copper | plane | 1 oz | ||
| 7630 | prepreg | 4.7 | 0.2mm | |||
| 4 | inner 3 | copper | plane | 1 oz | ||
| core | 4.6 | 0.3mm | ||||
| 5 | inner 4 | copper | plane | 1 oz | ||
| 7630 | prepreg | 4.7 | 0.2mm | |||
| 6 | inner 5 | copper | plane | 1 oz | ||
| core | 4.6 | 0.3mm | ||||
| 7 | inner 5 | copper | plane | 1 oz | ||
| 2116 | prepreg | 4.5 | 0.12mm | |||
| 8 | bottom | copper | signal | 0.035mm | 1 oz | |
| Final board thickness: 1.6mm±0.13mm | ||||||
8-Layer Prototype PCB Manufacturing Service
The 8-layer prototype FR-4 PCB is an 8-layer circuit board, which is firmly stacked together with predefined and reliable interconnection between layers. The 8-layer FR-4 PCB has more complex structure. JHYPCB is a large enterprise located in Shenzhen, China, which can manufacture 8-layer prototype PCB.
JHYPCB can provide you with multi-layer PCB board in accordance with RoHS standard. With laminated material, it can match high temperature in assembly process. Importantly, some lead-free assembly processes will require laminated substrates to withstand temperatures exceeding 260 degrees Celsius or 500 degrees Fahrenheit over a longer period of time. To solve this problem, we have high temperature laminates in stock, so that our customers can meet the higher temperature cycle requirements of some lead-free assembly applications.
JHYPCB is one of the leading 8 layer PCB manufacturers. For more information, pls send email to us.
8 Layer PCB
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JingHongYi PCB (HK) Co., Limited , https://www.pcbjhy.com